Todd Westerhoff on the Value of Solid Design Skills

Andy Shaughnessy recently caught up with Todd Westerhoff, product marketing manager for Mentor’s HyperLynx signal integrity (SI) tools. Todd discusses some of the challenges that he and his customers are facing and why good design skills have more influence on a PCB than any software tool.

Meet John Watson, I-Connect007 Columnist

Meet John Watson, CID, one of our newest I-Connect007 columnists! John has been in the electronics industry for 40 years, with 20 of them being in PCB design, and is now a senior PCB engineer for Legrand Corporation. Read "Elementary, Mr. Watson" in Design007 Week Newsletter.

The World of PCBs: Anything But Boring

Andy Shaughnessy had the chance to catch up with Megan Teta, CID+, product manager of design and education services at Insulectro. Megan explains why she’s excited to become more involved in training and why the world of PCBs is anything but boring, contrary to popular opinion.

Tamara Jovanovic Checks in After First Year as a Designer

What a difference a year makes. The I-Connect007 Editorial Team caught up with Tamara Jovanovic, a PCB designer they met last year at AltiumLive in San Diego as a newly minted engineering graduate. She discusses her first year in the industry and explains how education and training events can help shape the careers of new designers.

Lady Gaga’s Keyboardist Designs a Circular Piano

Who says a modern piano has to be a certain shape? Not Brockett Parsons, Lady Gaga’s keyboardist. He worked with Dave Starkey and Chuck Johnson to create PianoArc—a custom-designed 360-degree circular keyboard and a company with the same name. I spoke with Brockett and Dave at AltiumLive to learn more about the design efforts that went into this fascinating instrument.

Chris Banton is Bullish on New Tech

Chris Banton is the director of marketing for EMA Design Automation. He and Andy Shaughnessy discuss the need to train the next generation of designers, advent technologies like AI and machine learning, and why companies like EMA are using these advancements to help designers with today’s complex PCBs.

Meet Two New CID Grads: Kalen Brown and Michael Steffen

At PCB West, I spoke with two newly minted Certified Interconnect Designers: Kalen Brown of EaglePicher and Michael Steffen of Crystal Group. After passing the CID exam, they attended the IPC Designers Council Executive Board Meeting, where the more “seasoned” veterans were very happy to meet them.

Curtis Scott Opens the Blinds on PCB Design

I recently spoke with Curtis Scott, a young PCB design engineer with Current Products, a manufacturer of automated window coverings in Pensacola, Florida. I’m always excited to hear about OEMs in Pensacola; I lived there for 17 years, and it’s a great town, but you won’t find much industry other than tourism. I asked Curtis to share his thoughts on the industry and his job designing PCBs in that scenic city on the Gulf of Mexico.

Bryan LaPointe: A Great Time to Be Working With Technology

I recently interviewed Bryan LaPointe, a product engineer with Cadence Design Systems, and one of the younger people in the world of PCB design and EDA tools. I asked Bryan to discuss some of the challenges technologists are facing in PCB design and engineering, as well as some of the things that make this field so exciting right now.

What You Need to Know About a PCB Design Career

Never stop learning. Why? Because the industry never stops changing. Those that continuously stay in that state of learning are the ones who succeed. The old saying “Knowledge is power,” often attributed to Sir Francis Bacon, has never been truer. Fortunately, there is never a lack of things to learn. Don’t ever become apathetic about learning. Make a point of keeping a running list of ideas or subjects that you want to research, and then purposely set aside time in your week strictly to study and learn about these things anywhere you can.

The Value of Education and Communication

Editor Nolan Johnson recently spoke with Lawrence Romine, VP of corporate marketing at Altium, about what he thinks design customers need to know and the importance of education and communication between designers and manufacturers.

Top 10 Most-Read Design News Stories of 2019

As we move into 2020, we took a look back at the most popular Design007 news stories of the past year. Here for your enjoyment are the Top 10 most-read Design007 news items of 2019.

Top 10 Most-Read Design Articles of 2019

As we move into 2020, we took a look back at the most popular Design007 articles of the past year. Here for your enjoyment are the Top 10 most-read Design007 articles of 2019.

Top 10 Most-Read Design Columns of 2019

As we move into 2020, we took a look back at the most popular Design007 columns of the past year. Here for your enjoyment are the Top 10 most-read Design007 columns of 2019.

Insulectro Works to Bridge the Fabricator/Designer Gap

Barry Matties sat down with Insulectro’s Megan Teta and Mike Creeden to discuss trends they see in the materials market and how they’re working to bridge the gap between fabrication and design, including helping designers understand what they can do to make a board more manufacturable.

Utilizing AI in CAD Library Development

Nolan Johnson speaks with Chico Wu of Footprintku, a company using artificial intelligence (AI) to help fill gaps in CAD library development by partnering with design teams on things like addressing resource shortages and automating custom design rulesets while also eliminating other manual steps in the process.

Digi-Key on Adapting to the Changing Industry Landscape, Part 2

The I-Connect007 editorial team recently spoke with Chris Beeson, executive vice president of global suppliers and new business development at Digi-Key Electronics, about trends and the changing landscape of the industry. In the second half of this interview, Beeson discusses the EDA tools market, and how Digi-Key works with PCB designers to present the most efficient, seamless process for selecting components.

Designing for Complex PCBs

The I-Connect007 editorial team sat down with Freedom CAD’s Scott Miller to talk about the industry’s demand for more increasingly complex PCBs, and the challenges this presents. They also discuss Freedom CAD’s in-house training programs, the company’s recent book authored by Scott, and why communication is such an important tool in a PCB designer’s toolbox.

AltiumLive Frankfurt 2019: Happy Holden Keynote

Nobody left early! Altium had wisely kept Happy Holden’s keynote presentation on “PCB Trends that Will Impact Your Future” until the end of the final day of the AltiumLive 2019 European PCB Design Summit in Frankfurt, Germany. Pete Starkey presents the highlights of Happy's presentation.

Traversing the Design Landscape With Hartley and Creeden

Design instructors Rick Hartley and Mike Creeden recently spoke with the I-Connect007 Editorial Team about the current landscape of the PCB design segment. This wide-ranging conversation also focused on the next generation of designers, some promising new laminates, and the need for more communication and collaboration between designers and fabricators.

Words of Advice: Making Life Easier for Fabrication and Assembly

In a recent survey, we asked the following question: What steps do you take to make the job easier for your fabrication and assembly providers? Here are a few of the answers, edited slightly for clarity.

AltiumLive Frankfurt 2019: Carl Schattke Keynote

“How many here can remember manually taped artworks?” No more than three hands were raised in an audience of over 230 at the AltiumLive 2019 European PCB Design Summit in Frankfurt, Germany, as IPC Advanced Certified Interconnect Designer Carl Schattke introduced his keynote, entitled “Making and Breaking the Rules.” Schattke had learned PCB layout as his father’s apprentice, hand-taping several hundred PCB designs in the 1970s.

What Does Intelligent Routing Look Like?

Many PCB design projects miss schedule commitments by 70% due to delayed routing and lack of automation. Moreover, due to late-stage design changes, schedules are not met, and the addition of those new items takes 10 times longer or more to incorporate than if changes were added from the beginning. Fortunately, over the past several years, powerful routing capabilities have been added that allow designers to address a number of specific, critical tasks.

Words of Advice: What are Your Biggest Design Challenges?

In a recent survey, we asked the following question: What are your biggest design challenges? Here are just a few of the answers, edited slightly for clarity.

Martyn Gaudion Discusses Backdrilling Software

Martyn Gaudion updates Pete Starkey on Polar’s recent work to model signal integrity to higher speeds as well as additional laminates included in the material library. Now backdrilling is the focus for high-speed design specialists. Martyn discusses the backdrilling beta software that Polar Instruments was showing on the show floor.

AltiumLive Frankfurt 2019: Jeremy Blum Keynote

Blum was a great advocate of considering the PCB in its holistic context and designing beyond it. Understanding the software needs ought to be of prime importance for the designer, and he believed that writing even the most basic firmware would help to ensure that the resulting electronics would be debuggable and equipped to handle the needs of the software development team.

AltiumLive Frankfurt 2019: Rick Hartley Keynote

Introduced by Lawrence Romine, Altium’s VP of corporate marketing, as a “low impedance presenter with a passion for his topic,” Rick Hartley delivered the opening keynote at the AltiumLive 2019 European PCB Design Summit in Frankfurt, Germany. Pete Starkey provides an overview of Hartley's presentation, entitled “What Your Differential Pairs Wish You Knew."

A Radical New Design Perspective

Nolan Johnson recently interviewed Gordon Kruberg, CEO of Gumstix, which was acquired by Altium recently. While Gumstix designs and sells computer hardware products, Altium bought Gumstix for the Geppetto design software. Gordon discusses how the concepts of Geppetto are likely to influence future design methods in the Altium environment.

University Rover Challenge Tests Student Teams

Jose Antelo, Luis Toledo, and Francisco Fernandez, members of the California State University (CSU) Fullerton Rover Challenge team, are working on building a competitive robotic platform to compete with other universities in a competition hosted by The Mars Society known as The University Rover Challenge.

Book Review: The Printed Circuit Designer’s Guide to…Executing Complex PCBs

If you are serious about designing complex PCBs (most designs today are far from elementary) and even more serious about doing it right the first time, then this is the book for you. Loaded with guidelines for designing cutting-edge PCBs, this book is filled with real-world examples and tips, tricks, and techniques by some of Freedom CAD’s most experienced designers.

Words of Advice: 5G Reliability

In a recent survey, we asked the following question: Do you think 5G will improve the reliability of communication? Here are a few of the answers, edited slightly for clarity.

Lee Ritchey on the Direction of PCB Design

Editors Andy Shaughnessy and Nolan Johnson recently spoke with Lee Ritchey of Speeding Edge about the direction of PCB design. Lee also discusses some of the changes that he has seen in this industry over the past 40 years and some of the technological drivers that are causing designers to think more like electrical engineers than ever before.

Communication, Part 6: The Importance of Technology Fit

In the final installment of this series on how PCB fabricators and designers can better communicate, Bob Chandler from CA Design and Mark Thompson from Prototron Circuits discuss the importance of “technology fit” and how this concept impacts the synergy of the two parties involved.

Words of Advice: The OEM Systems Designer

In a recent survey, we asked the following question: What advice would you give an OEM systems designer? Here are a few of the answers, edited slightly for clarity.

Why Does the PCB Industry Still Use Gerber?

Every so often, I hear technologists ask why so many PCB designers still use Gerber. That is a fair question. Ucamco has over 35 years of experience in developing and supporting cutting-edge software and hardware solutions for the global PCB industry. Our customers—small, medium, and large PCB fabricators—include the electronics industry’s leading companies, and many of them have been with us for over 30 years. We are dedicated to our industry and excellence in everything we do, which includes our custodianship of the Gerber format.

Dugan Karnazes Discusses His New Startup

I caught up with Dugan Karnazes again this year and discussed his new startup, Velocity Research, which is a one-stop shop for design made up of technical creatives. The Grand Rapids company is already doing design work for a variety of customers, from individuals to multinational companies.

Communication, Part 5: Internet Impedance Calculators for Modeling

Bob Chandler of CA Design and Mark Thompson of Prototron Circuits address how new engineers use internet impedance calculators for modeling (e.g., formulas versus recipes) in Part 5 of this series. Do you use impedance calculators that you found on the internet? Read on!

Design For Excellence: Karen McConnell on Standards

During the IPC Summer Meetings, I spoke with Karen McConnell, senior staff CAD CAM engineer with Northrop Grumman Mission Systems. Karen is a veteran PCB designer as well as an IPC committee chair and mentor. She offered an update on some of the IPC committees she chairs, the need for more mentor programs in this industry, and why you can call something a ham sandwich if you define it correctly in the standard.

IPC-2581 Continues to Flourish

Because standards adoption in this industry tends to be akin to turning around a battleship, what is often seen as new has generally already been in production for 10 years or more. Often, there are outside influences and dependencies that cause this, so most of us tend to take a “wait-and-see” approach—let others shake out the issues. And even then, we only look at adoption if the mandate comes from higher-ups in the organization. It works the way we do it now, so why change?

Words of Advice: What Feature Would You Like to See in Your CAD Tool?

In a recent survey, we asked the following question: What feature would you like to see in your CAD tool? Here are a few of the answers, edited slightly for clarity.

So Many Standards Committees, So Little Time

During the IPC Summer Meetings and Panelpalooza in Raleigh, North Carolina, I met with Leo Lambert, vice president and director of technology at EPTAC. We discussed IPC’s recent efforts to revamp the way standards are developed and interpreted as well as changes to training and education committees and a variety of methods for eliminating errors and duplicated comments when revising standards.

Words of Advice: Making Life Easier for Fabrication and Assembly

In a recent survey, we asked the following question: What steps do you take to make the job easier for your fabrication and assembly providers? Here are a few of the answers, edited slightly for clarity.

Words of Advice: Starting a New Design

In a recent survey, we asked the following question: What do you think is the most important thing a designer should remember when planning a new PCB design? Here are a few of the answers, edited slightly for clarity.

ODB++: Transforming Ideas Into Products

The ODB format originated with the objective of delivering on this need. The format was originally introduced for use by PCB fabricators, eliminating the need for a collection of CAM files in multiple formats—such as Gerber, Excellon, IPC-356, or even IPC-350, which was an early attempt to simplify this process. The key to the success of ODB was that it obtained industry acceptance.

Bob Martin Brings Maker Attitude to AltiumLive Keynote

Bob Martin is a self-proclaimed “Wizard of Make” and senior staff engineer with Microchip Technology. Next week, this leader of the maker community will be one of the keynote speakers at AltiumLive in San Diego, California. I caught up with Bob and asked him to give us a preview of his presentation.

Words of Advice: What Data Format do you Send Your Assembly Provider?

In a recent survey, we asked the following question: What PCB data format(s) do you send to your PCB assembly supplier? Here are just a few of the answers, edited slightly for clarity.

John Michael Pierobon Discusses His Flex Design Class

If you’re new to flex design, you might want to check out an online course offered by All Flex, a flex fabricator. The course, Designing Flexible Circuits, was created by John Michael Pierobon. I asked John Michael to discuss his flexible circuit design course, and whether online curriculum can ever replace good old-fashioned live instruction.

Words of Advice: First Steps in the Design Process

In a recent survey, we asked the following question: What are the first steps you take in the PCB design process? Here are some of the answers, edited slightly for clarity.

Leo Lambert on Training the Next Generation of Technologists

I sat down for an interview with Leo Lambert, VP of technical director for EPTAC Corporation, during the IPC Summer Meetings in Raleigh, North Carolina. We discussed the company’s growth, including plans to have training centers across different regions of the country to help cut down on students’ travel times, and why training methods must constantly evolve to remain effective.

Insulectro and DuPont Experts Talk Flex Design

I recently spoke with Insulectro’s Chris Hunrath and DuPont’s Steven Bowles at the DuPont Technology and Innovation Center in Sunnyvale, California. We discussed a variety of topics related to flex design, including the support structure that’s needed in flex design, the everchanging world of flex materials, and the need for working with a flex fabricator as early as possible in the flex design cycle.

Design Rule Checks Cut Down Board Respins

PCB designs commonly undergo multiple respins as a result of inconspicuous signal integrity (SI), power integrity (PI), and electromagnetic interference (EMI) violations. At an average cost of nearly $28,000 per respin, ensuring that a given design meets its performance, time to market, and cost goals is imperative. To help eliminate complicated and difficult-to-diagnose layout violations, some PCB tool suites offer unique electrical design rule checks (DRC).

Words of Advice: What are Your Biggest Design Challenges?

In a recent survey, we asked the following question: What are your biggest design challenges? Here are just a few of the answers, edited slightly for clarity.

Joe Grand Brings a Hacker Outlook to PCB Design

From designing his own mischievous gadgets to testifying on Capitol Hill and starring in his own Discovery TV show “Prototype This!” Joe Grand has lived a hacker’s life. I spoke with Joe about his upcoming keynote at AltiumLive in San Diego, “When Hacking and Engineering Collide,” which will focus on the lighter side of engineering and the benefits of thinking like a hacker. Can Joe convince PCB designers to adopt a hacker’s outlook?

Words of Advice: What Feature Would You Like to See in Your CAD Tool?

In a recent survey, we asked the following question: What feature would you like to see in your CAD tool? Here are a few of the answers, edited slightly for clarity.

Robert Feranec: A Lifetime of PCB Design

I recently spoke with Robert Feranec about the upcoming keynote he’ll be giving at AltiumLive in San Diego, California. Robert is a YouTube star and founder of the FEDEVEL Academy. In our interview, he discusses his keynote presentation as well as how he’s helping designers and engineers around the world understand and optimize their PCB design processes.

Pulsonix Is Bullish on Next-gen Designers

During a recent trip to the U.K., Barry Matties spoke with Bob Williams, the managing director of Pulsonix, about training the new generation of designers. He explained how the company reaches out to local high schools, colleges, universities, and user groups to advocate for careers in PCB design and manufacturing.

Words of Advice: Flex Design Problems

In a recent survey, we asked the following question: What are your biggest problems related to flex design? Here are just a few of the answers, edited slightly for clarity. Not designing "enough flex to get good at it" is a fairly common refrain.

SimplifyDA’s Floorplanning Tool Optimizes Autorouting

Zen Liao, CEO of Simplify Design Automation, recently spoke with the I-Connect007 editorial team about his company’s high-level floorplanner for autorouting, which allows engineers to pass their ideas along to PCB designers. Zen discusses the floorplanning technology and his marketing strategies as well as the challenge of getting reluctant PCB designers to embrace autorouters.

AltiumLive Q&A With Keynote Speaker Eric Bogatin

It's show season again! The 2019 AltiumLive PCB Design Summit will be here before you know it, taking place October 9-11 in San Diego, California. Teledyne LeCroy’s Eric Bogatin, the “signal integrity evangelist,” will be giving a keynote presentation titled “Breaking Bad: A Downside of Open Source Designs.” Eric gives us a preview of his presentation and discuss some of the biggest design challenges he sees today.

Decoupling Capacitors’ Impact on Power and Signal Integrity

It is crucial for hardware designers to identify the resonant frequency of each element of the PDN on a PCB and its impact on power integrity. A PCB with poor power integrity—such as a higher-than-targeted PDN impedance across the wideband range—results in SSN and a shrunken eye diagram of the signal transmitted by the IC that draws power from the PDN. This article demonstrates the post-layout co-simulation of power and signal integrity.

Meet Our Newest Columnists From NCAB Group

Meet our newest I-Connect007 columnists from NCAB Group! Alifiya Arastu, Jeff Beauchamp, Ruben Contreras, and Harry Kennedy are field application engineers from NCAB Group's technical team. In their columns, they will explore fresh PCB concepts, including medical and telecommunications applications, topics related to RoHS, and much more.

Words of Advice: Obstacles to Solid Data Hand-off

In a recent survey, we asked the following question: What are the biggest obstacles you face in getting your design to the fabricator? Here are a few of the answers, edited slightly for clarity.

Words of Advice: Your Company’s Design Process

In a recent survey, we asked PCB designers to describe their company’s design process: Is it a rigid workflow they follow to the letter, or a process that allows for their individual techniques? Of course, the comments were illustrative.

Bill Brooks on Teaching PCB Design at Palomar College

Bill Brooks of Nordson ASYMTEK is a long-time PCB designer and one of the first people to teach PCB design courses in a college setting. He recently spoke with the I-Connect007 editorial team about his history in design and his time as a PCB design instructor, the curriculum he developed and taught, and various techniques that might be enacted today to better educate the designers of tomorrow.

Focusing on Surface Sensitivity for Reliability

At the recent IPC High-Reliability Forum and Microvia Summit, Customer Applications Scientist Elizabeth Kidd and Sales Engineer Alex Bien, both of BTG Labs, discuss with Andy Shaughnessy their presentation on the challenges of working with highly sensitive surfaces, such as the risk of contamination. They also talked about the various surface characterization techniques that BTG Labs uses to identify such contaminants.

Interconnect Reliability Correlation With System Design and Transportation Stress

Interconnect reliability is very critical to ensure product performance at predefined shipping conditions and user environments. Plating thickness of the compliant pin and the damping mechanism of electronic system design are key success factors for this purpose. This paper discusses design variables—such as pin hard gold plating thickness, motherboard locking mechanism, and damping structure design—to ensure interconnect reliability.

Words of Advice: Drawbacks to Your PCB Data Format?

In a recent survey, we asked the following question: What is the biggest drawback to your current PCB data format? Here are a few of the answers, edited slightly for clarity.

Development of Flexible Hybrid Electronics

This article will present a hybrid manufacturing process to manufacture FHE systems with a two-layer interconnect structure utilizing screen printing of silver conductive ink, filled microvias to connect ink traces at the different layers, and use of the traditional reflow process to attach the semiconductor chips to the printed substrates.

IPC Reliability Forum Wrap-up With Brook Sandy-Smith

I attended the recent IPC High-Reliability Forum and Microvia Summit in Baltimore, Maryland. The speakers and panelists focused on a variety of topics, but one issue that kept popping up was the failure of some microvias on military and aerospace PCBs. Fortunately, some smart technologists are focusing on determining the cause of these via failures. I asked Brook Sandy-Smith, IPC’s technical education program manager, to give us a quick wrap-up of this event.

Words of Advice: Planning a New Design

In a recent survey, we asked the following question: What do you think is the most important thing a designer should remember when planning a new PCB design? Here are a few of the answers, edited slightly for clarity.

The Impact of Inductance on Impedance of Decoupling Capacitors

This article discusses the impact of interconnection inductance on the impedance of the decoupling capacitor, which influences the power integrity of the PCB. The investigation is performed with 3DEM simulation by varying the trace length and height of stitching vias that connect the decoupling capacitor across the power rail and ground.

Altium Designer 19.0 Features Printed Electronics Design Functions

The newest version of Altium Designer—revision 19.0—includes functionality for designing printed electronic circuits. We wanted to get the scoop on Altium’s PEC tools, so we asked Nikolay Ponomarenko, Altium’s director of product management, to give us a tour of the new functions.

IPC High-reliability Forum and Microvia Summit Review, Part II

The Microvia Summit on May 16 was a special feature of the 2019 event in Baltimore, since microvia challenges and reliability issues have become of great concern to the PCB manufacturing industry. It provided updates on the work of members of the IPC V-TSL-MVIA Weak Interface Microvia Failures Technology Solutions Subcommittee and opportunities to learn about latest developments in methods to reveal and explain the presence of latent defects, identify causes and cures, and be able to consistently and confidently supply reliable products.

Denny Fritz: The Difference Between Quality and Reliability

I recently spoke with industry veteran (and I-Connect007 columnist) Denny Fritz about the relationship between quality and reliability—two terms that are unequal but often used interchangeably. We also discuss the current state of lead-free solders in the U.S. military and defense market as well as the microvia reliability issues Denny focused on at IPC’s High-Reliability Forum and Microvia Summit in Baltimore, Maryland.

Mentor Tools: Optimized for Flex and Rigid-flex Design

With the launch of the new Flex007 section in Design007 Magazine, we asked David Wiens, product marketing manager with Mentor, a Siemens Business, to tell us about their tools’ flex and rigid-flex design capabilities. As David explains, today’s higher-end design software tools are optimized for flex design, making workarounds a thing of the past.

26 Meters of Flex!

Barry Matties spoke with Philip Johnston, managing director of Trackwise Designs, about the company’s patented length-unlimited multilayer printed circuits aimed at replacing conventional wire harnesses. Originally created for the aerospace industry, Trackwise has since seen growing interest from a number of different industries. Jake Kelly, managing director and chairman of Viking Test Ltd., also joined the conversation to discuss the importance of having a flexible equipment supplier when dealing with such a unique technology.

IPC High-reliability Forum and Microvia Summit Review, Part I

The IPC High-Reliability Forum and Microvia Summit covered a broad range of topics related to reliability and provided interactive opportunities to share expert knowledge and experience in determining and understanding the causes of failure and selecting the best design rules, materials, processes, and test methods to maximise product reliability.

Words of Advice: Where Do You Get Involved in the Design Process?

In a recent survey, we asked the following question: Where in the process do you typically get involved with a design project? Here are a few of the answers, edited slightly for clarity.

Words of Advice: What are Your Biggest Problems Related to Flex Design?

In a recent survey, we asked the following question: What are your biggest problems related to flex design? Here are a few of the answers, edited slightly for clarity.

PCB Reliability: Via Design

When considering the long-term reliability of a PCB, you must take into account any vias on your board. While an invaluable and essential part of board design, vias introduce weaknesses and affect solderability. This article will discuss vias, the potential concerns that are introduced into your board through their implementation, and how to minimize those concerns to acceptable levels.

Words of Advice: What Feature Would You Like to See in Your CAD Tool?

In a recent survey, we asked the following question: What feature would you like to see in your CAD tool? Here are a few of the answers, edited slightly for clarity.

Design Is a Pivotal Piece of the Puzzle

As a field applications engineer at TTM Technologies, which has fabrication and manufacturing locations around the world, Julie Ellis sees a wide variety of customer design requirements. In this interview with the I-Connect007 Editorial Team, Julie explains how PCB designers can influence the development of the PCB. She shares a variety of tips and tricks that designers can implement early in the design process to help optimize fabrication and assembly later on and keep small issues from becoming big problems downstream.

Albert Gaines: Design All Comes Down to Documentation

During SMTA Atlanta, I spoke with Albert Gaines of HiGain Design. We discussed Albert’s belief that everything starts with design and that too many engineers and designers focus solely on the final board at the expense of the documentation, which is a designer’s most important product. Do you consider your documentation to be a critical product?

Words of Advice: Making Life Easier for Fabrication and Assembly

In a recent survey, we asked the following question: What steps do you take to make the job easier for your fabrication and assembly providers? Here are a few of the answers, edited slightly for clarity.

Pulsonix 10.5 Development Driven by Customer Demand

I recently spoke with Bob Williams, the managing director of Pulsonix, about the release of the EDA tool’s version 10.5. Bob explained how the company had made the tool more intuitive based on user input, and he discussed some of the more cutting-edge functionality not normally found in competitively priced tools.

Words of Advice: Where Do You Get Involved in the Design Process?

In a recent survey, we asked the following question: Where in the process do you typically get involved with a design project? Here are a few of the answers, edited slightly for clarity.

Design for the Unknown

Our industry loves DFx, also known as the “Design Fors.” As PCB designers, we not only design for manufacturability (DFM) but we design for assembly, reliability, cost, test, and many more factors which we like to lump together as DFx. But now, I think it’s time we embrace a new DFx: Design for the Unknown, or DFU.

K&F Electronics Hiring Young People for the Future

At the SMTA show in Atlanta, I spoke with Rick Kincaid, founder of K&F Electronics, about his son Sean taking over the family business as well as the current uncertainty with trade tariffs.

Libraries: A Must-have for Design

I-Connect007 was invited to attend a session of the Orange County Chapter of the IPC Designers Council (DC). Even though I have been an IPC member for over half a century (yes, almost since vacuum tubes dominated design), this was my first DC event.

Words of Advice: Will 5G Affect Electronics Manufacturing?

In a recent survey, we asked the following question: How do you think 5G will affect the electronics manufacturing industry? Here are a few of the answers, edited slightly for clarity.

Stitching Capacitor: Crosstalk Mitigation for Return Path Discontinuity

When the return path is broken due to the switching of reference planes with different potential, e.g., from ground to power or vice versa after layer transition on PCB, the return current might detour and propagate on a longer path, which causes a rise in loop inductance. This might lead to the sharing of a common return path by different signals that pose a high risk of interference among the signals due to higher mutual inductance. This interference results in signal crosstalk. To mitigate the crosstalk due to return path discontinuity (RPD), stitching capacitors are mounted on the PCB to serve as a bridge between the two reference planes of interest on different PCB layers.

Words of Advice: Planning a New Design

In a recent survey, we asked the following question: What do you think is the most important thing a designer should remember when planning a new PCB design? Here are a few of the answers, edited slightly for clarity.

Design Rules Recipe: Solvability, Manufacturability, and Performance

One thing that we’ve noticed lately: Each designer seems to have his or her own way of using PCB design rules. There doesn’t seem to be much agreement about setting or using design rules. So, in this true experts panel, Mike Creeden of San Diego PCB joined Freedom CAD’s Scott McCurdy, Jay Carbone, and Rich Kluever to share their views on PCB design rules.

Wild River, eSilicon, and Samtec Team up for 112-Gbps Test Vehicle

During DesignCon, I sat down for an interview with Tim Horel from eSilicon, Al Neves of Wild River Technology, and Matt Burns from Samtec. They’ve recently teamed up to create a 112-Gbps test vehicle that may be the first of its kind of test fixture.

Freedom CAD Book Excerpt: The Printed Circuit Designer’s Guide to… Executing Complex PCBs

The following is an excerpt from Chapter 5 of "The Printed Circuit Designer’s Guide to… Executing Complex PCBs," written by Scott Miller of Freedom CAD Services.

Words of Advice: What Feature Would You Like to See in Your CAD Tool?

In a recent survey, we asked the following question: What feature would you like to see in your CAD tool? Here are a few of the answers, edited slightly for clarity.

Mentor’s EDA Perspective on Managing Design Rules

I recently spoke with Dave Wiens, product manager, and Mike Santarini, EDA content director of corporate marketing, both of Mentor, a Siemens business, about design rules and constraints, and what their customers want regarding design rules. They explained how EDA companies like Mentor help designers constrain for performance while avoiding over-constraining and increasing the cost of the board and also being manufacturing-aware.

Altium’s Craig Arcuri on Design Rules: Past, Present, and Future

We recently spoke with Altium’s Craig Arcuri about his views on design and manufacturing rules. Craig has experience running both design and manufacturing companies, so he has a fairly circumspect view of constraints from both sides of the product realization process. Craig details some of the challenges with setting and managing hundreds of often divergent design and manufacturing rules, and how both design and manufacturing constraints need to evolve.

Words of Advice: When do You Get Involved in the PCB Design Cycle?

In a recent survey, we asked the following question: Where in the process do you typically get involved with a design project? Here are a few of the answers, edited slightly for clarity.

XNC Format: Gerber Takes Data Into the Future

The problem is that so many NC files are of deplorable quality because the NC format was never designed as a data transfer format. It has always been a machine driver and contains all sorts of information that a drilling machine needs, but that is irrelevant and confusing for data exchange.

Technically Appropriate Material Choices are Key to Design Success

Materials are no longer a passive part of the design; they play an active role in the manufacturability, reliability, and speed of a PCB. I-Connect007’s Nolan Johnson and Mike Creeden, founder of San Diego PCB Design, discuss several key characteristics that designers should consider in their material selection process.

Words of Advice: Your Company’s Design Process

In a recent survey, we asked PCB designers to describe their company’s design process: Is it a rigid workflow they follow to the letter, or a process that allows for their individual techniques? Of course, the comments were illustrative. Only one respondent said, "We just wing it."

Learning to Be More Flexible: Case Studies on Improving FPC Design

As miniaturization requirements force manufacturers to pack more functionality into ever-smaller packages, it becomes more difficult to conform to IPC construction recommendations. Achieving robust FPCs requires frequent, iterative interaction internally among the mechanical, electrical, and PCB design teams, as well as with the fabricators and assemblers. The sooner in the design cycle you can engage the supplier and assembler, the better.

Automation and the Smart Factory: Introduction to Industry 4.0

There’s a lot of talk about automation, but I find that there is very little available on automation planning. This is one of my specialties. I started by studying for an MSEE in control theory, which went well with my bachelor’s degree in chemical engineering because I specialized in process control and IC manufacturing.

Smart Design Data Is Essential for Industry 4.0 Manufacturing

Almost all of the conversation regarding Industry 4.0 is centered on the manufacturing floor, which is where the effect of the initiative is most felt initially. Little attention is given to the starting data for manufacturing—the data that comes from design. However, you can’t have smart manufacturing if your process begins with dumb data. As Pink Floyd said, “You can’t have your pudding if you don’t eat your meat!”

Words of Advice for New PCB Designers

In a recent survey, we asked the following question: What do you think is the most important thing a designer should remember when planning a new PCB design? Here are a few answers, edited slightly for clarity. One favorite: "Have a good music selection."

Words of Advice: Long Component and Laminate Lead Times

In a recent survey, we asked the following question: What advice do you have regarding the current supply chain issues? Here are just a few of the answers, edited slightly for clarity. One reply really sticks out: "If the end customer is large, use their power."

XPLM: Using PLM to Integrate ECAD and MCAD Data

During AltiumLive in Munich, I met with Robert Huxel, XPLM’s director of business development for EMEA and APAC. XPLM offers data integration for some of the big EDA tool companies, and their tools can integrate ECAD and MCAD data into PLM systems. I asked Robert to tell us about the requirements of today’s PLM tools, the changing world of ECAD and MCAD integration, and whether these two types of data are ever going to converge.

EM Modeling: The Impact of Copper Ground Pour on Loss and Impedance

This article briefly introduces the general purposes of copper ground pour on printed circuit boards. Subsequently, the impact of copper ground pour on PCB channel loss in terms of insertion loss and impedance in terms of time domain reflectometry (TDR) is studied with electromagnetic modeling using Mentor HyperLynx.

Youth in the Industry Putting Training to Work

At a job fair on campus at George Fox University, Nolan Johnson sat down with Jake Whipple, a computer engineering senior, to discuss the GFU engineering program. This is one of the few engineering programs in the U.S. that gives students experience designing PCBs before they enter the work force.

PCB Designer Survey: Everything Starts With Design

Recently, a variety of technologists who fabricate and assembly PCBs have made the following statement: “Everything starts with design.” We want to get your thoughts on this. What are some of the steps you take early in the design process that can affect your downstream partners? Let us know!

An Experienced Millennial on Hiring the Next Generation

During DesignCon, I met with Geoffrey Hazelett, VP of sales for Polar Instruments. Even though he has been in EDA for a few years, Geoffrey is still in his thirties, which makes him a youthful cherub in this industry. I asked Geoffrey what he thinks about the new PCB designers and EEs entering this field, and what more can be done to expose young people to the world of PCBs.

Preparing to Enter the Workforce With PCB Design Experience

Nolan Johnson recently spoke with Alex Burt, a computer engineering student at George Fox University, at a well-attended college career fair on the GFU campus in Newberg, Oregon. In the interview, Alex discusses his PCB classwork, challenges of design, and how it has impacted his internship experience as he prepares to enter the workforce upon graduation in the spring semester of 2019.

George Fox University: Teaching PCB Design to EE Students

Gary Spivey is director of engineering projects at George Fox University, a Christian college in the Pacific Northwest, and his students learn to design and fabricate a PCB while also giving back to the community. Not surprisingly, these graduates get snapped up quickly. In this wide-ranging interview, Spivey discusses GFU’s engineering curriculum, their cutting-edge lab facilities, and the need to teach students to think critically.

Words of Advice: Flex Design Challenges

In a recent survey, we asked the following question: What are your biggest problems related to flex design? Here are just a few of the answers, edited slightly for clarity.

PCB Design Is All in the Family With Nicole Pacino

I shared a flight with Nicole Pacino on the way to Altium Live in Munich, and she mentioned that her father was speaking at the show. I went down the list of speakers, and it turned out that her dad is Mike Creeden of San Diego PCB. In Germany, I asked Nicole to tell us about how she got into this industry, and what we could do to draw more young people into this career.

Project MARCH Students’ Exoskeleton Helps Paraplegics Walk Again

Project MARCH student volunteers design and build futuristic exoskeletons that can help paraplegics walk. The students do most of the work themselves, including designing the various PCBs. I saw their latest exoskeleton up close at AltiumLive in Munich, and I had to find out more about this program. Delft Students Martijn van der Marel and Roy Arriens sat down with me to discuss their work on the exoskeleton, including their PCB design experience, and whether they plan to pursue PCB design as a career.

From Spain to Austria: A Student’s Drive to Be a Professor

The AltiumLive event in Munich drew several hundred PCB designers from around Europe, including engineering students interested in PCB design. I spoke with Pablo Sanchez Martinez, a student at FH Joanneum in Austria who is working toward being a full professor in hardware design. Pablo discussed his studies in engineering and PCB design, the classes he’s teaching, and his plans for teaching the young engineers of the future.

Words of Advice: Combating Component and Material Shortages

In a recent survey, we asked the following question: What strategies are you employing to combat supply chain issues? Here are just a few of the answers, edited slightly for clarity.

Sunstone's Terry Heilman Discusses the Evolving Industry

For the last 14 years, CEO Terry Heilman has been one of the key leaders in driving the expansive growth at Mulino, Oregon-based Sunstone Circuits, growing from a traditional PCB manufacturer to a PCB solutions provider with online ordering and a free PCB design tool. At IPC APEX EXPO 2019, Terry discusses the importance of serving the customer, how customers are shaping companies today, and the impact this will have on companies in the future.

Words of Advice: Obstacles to Getting Designs to Fab

In a recent survey, we asked, "What are the biggest obstacles you face in getting your design to the fabricator?" Here are a few of the responses, edited slightly for clarity.

Andy Johnson: EDA a Great Field for Young People

At the AltiumLive event in Munich, Germany, I sat down for an interview with Altium’s Andy Johnson. Andy is 25 and just a few years out of college, so I asked for his thoughts on working in this industry and what we can do to draw more young people into the PCB design community.

Kelly Dack at IPC APEX EXPO: The Attendees Speak!

During IPC APEX EXPO, Guest Editor Kelly Dack and the I-Connect team roamed the show floor, recorders in hand. They asked various attendees for their impressions of the show, and any new tools and technology that may have caught their attention. These are their stories.

Dan Gamota Discusses Flex and Alternative Substrates

As the VP of manufacturing technology and innovation for Jabil, Dan gave us his take on the current state of flex and alternative substrates and explained why modeling, automation, and process controls are likely to be key ingredients in the recipe for manufacturing non-FR-4 boards in the future.

Nano Dimension Offers Update on Dragonfly 3D Printer a Year After Launch

The Nano Dimension Dragonfly 3D printer arrived in much fanfare a little over a year ago. The company has been selling them to customers around the world, many of whom are using them to print antennas, sensors, and PCBs. At AltiumLive in Munich, I asked Product Manager Robert Even to discuss what they’ve learned in the year since the Dragonfly debuted, and some potential uses for 3D printing technology.

SimplifyDA: Time for a New Autorouter Paradigm?

At DesignCon, I spoke with SimplifyDA CEO Zen Liao and Director of Sales and Marketing Dale Hanzelka. SimplifyDA is putting a new twist on the old autorouter by utilizing topological technology. I asked them to discuss their approach to autorouting, and how they plan to entice more PCB designers to use routers. Is it time for a paradigm shift in autorouting?

Bert Simonovich on Modeling Copper Roughness

I met with one of our contributors, Bert Simonovich of Lamsim Enterprises, at DesignCon 2019. Bert’s paper on interconnect modeling was nominated as a Best Paper finalist, so I asked him to discuss his paper and some of the challenges that engineers and their customers are facing right now.

3DEM Modeling: Influence of Metal Plating on PCB Channel Loss and Impedance

This article briefly introduces different types of metal plating commonly used in PCB fabrication. Subsequently, the influence of metal plating on PCB channel loss (i.e., insertion loss or S21) and impedance (i.e., time domain reflectometry or TDR) is studied with 3DEM modeling,

Mentor’s Cristian Filip Discusses His Award-winning DesignCon Paper

During DesignCon, I met with Cristian Filip, a senior product architect with Mentor, a Siemens business. Cristian had just received word that his paper had won a DesignCon Best Paper award—his second such award in three years. I asked Cristian to discuss his paper and how this technology can help improve manufacturing yields at high volumes.

EMA: Cadence Moves Simulation Further Up in the Design Cycle

Cadence Design Systems recently integrated more of its Sigrity capabilities into the front end of its PCB design tools. During DesignCon, Chris Banton of EMA Design Automation spoke with me about how this drive for “model-less analysis” benefits the PCB designer who can now access signal and power integrity, DFM, and electrical rule checking functionality early in the design process and have fewer issues later.

Electromagnetic Analysis Design Insight: Effects of Meshed Reference Planes on Interconnects

Most of the transmission lines in PCB or packaging interconnects have so-called quasi-TEM waves with the electric and magnetic fields mostly perpendicular or transverse to the propagation direction. Parameters of such transmission lines can be accurately approximated with the analysis of a single cross-section in a 2D field solver. With the cutouts in the reference plane, the waves become non-TEM and not even quasi-TEM due to the presence of the longitudinal components in the electric and magnetic fields.

Words of Advice: What are Your Biggest Design Challenges?

In a recent survey, we asked the following question: What are your biggest design challenges? Here are just a few of the answers, edited slightly for clarity.

Cherie Litson on ECAD/MCAD and Training the Next Generation

Cherie Litson, CID+, was one of the instructors at AltiumLive Munich. I asked her to discuss some of the topics she covered in her class, and what the future of PCB design will look like. How are we going to pass down all of this design knowledge to the next generation?

Todd Westerhoff Discusses His New Position and Much More

At DesignCon, I met with our old friend Todd Westerhoff, a veteran signal integrity engineer. Todd joined Mentor, a Siemens Business, since we last spoke. We discussed his new job responsibilities, his drive to get more designers and engineers to use SI tools, and the increasing value of cost-reduced design techniques versus overdesigning PCBs.

Words of Advice: Component Shortages in 2019

In a recent survey, we asked the following question: What components do you expect to be in short supply in 2019? Here are just a few of the answers, edited slightly for clarity.

RTW IPC APEX EXPO 2019: Judy Warner on Altium's Transformative Vision

During IPC APEX EXPO, Guest Editor Kelly Dack sat down for an interview with Judy Warner, Altium's director of community engagement. They discussed Altium's efforts to educate PCB designers, regardless of their CAD tools, and the company's plan to transform the industry by bringing together PCB design and manufacturing.

Carl Schattke on Stackup Design and Managing the Component Shortage

At AltiumLive, I met Carl Schattke, CID+, a lead PCB designer with an American automaker. Carl and TTM’s Julie Ellis taught a packed class on good stackup practices complete with plenty of slides showing examples of all kinds of stackups. After class, Carl explained why the stackup is often the root of manufacturing problems downstream, and why today’s discrete component shortages are likely to be around for quite some time.

Linda Mazzitelli: PTC Goes all in on ECAD/MCAD Collaboration

At AltiumLive Munich, I ran into Linda Mazzitelli of PTC. Linda has worn a lot of hats in the PCB design world—she’s even married to a designer. I asked Linda to discuss her current work at PTC and the apparent convergence of ECAD and MCAD, which many think has been a long time coming for this industry.

Words of Advice: What Concerns you About the Future?

In a recent survey, we asked the following question: What concerns do you have about the future? Here are just a few of the answers, edited slightly for clarity.

Casper van Doorne Discusses His AltiumLive Class, IoT, and More

What’s in a name? When PCB designer Casper van Doorne needed to choose a name for his service bureau, only one name would do—Doofenshmirtz Evil Incorporated, a villainous name familiar to fans of Walt Disney. At AltiumLive Munich, I spoke with Casper about his company, the class he presented in Munich, and some of the benefits and ramifications of the growth of IoT.

Natasha Baker: Supply Chain Transparency Inside the CAD Tool

Natasha Baker, CEO and founder of SnapEDA, an online parts library, discusses the benefits of transparency in online libraries to designers, and discusses strategies on how to solve supply chain challenges, and more.

A Drone's-eye View of the IPC APEX EXPO Show Floor

If you couldn't make it to IPC APEX EXPO in San Diego, don't worry. We have full coverage of this annual must-attend event, from the opening ceremony to the close of the final day. To get a sense of the size of this year's show, check out our drone's-eye view of the show floor. Can we name our drone Air007?

TUM Hyperloop Team Learns PCB Design on Way to Setting World Speed Record

At AltiumLive Munich, I met with Tobias Bobrzik, a Technical University of Munich student and member of the TUM Hyperloop team. In 2018, the TUM Hyperloop team’s prototype pod set the world speed record of 290 miles per hour, which lead to their meeting with Musk. Tobias designed some of the PCBs used in that vehicle, so I asked him to tell us more about this experience, and what he hopes to do after graduation.

Words of Advice: Flex Design and Manufacturing Training

In a recent survey, we asked the following question: Where do your technologists acquire training or expertise regarding flexible circuits? Here are just a few of the answers, edited slightly for clarity.

Joe Clark Discusses DownStream’s Updated Tool Lineup and IPC-2581

DownStream Technologies recently revamped their entire product line, from CAM350 through BluePrint-PCB. DownStream co-founder Joseph Clark and Guest Editor Kelly Dack discuss some of these updates, including a new GUI and capabilities such as 3D analysis, as well as news about IPC-2581.

RTW IPC APEX EXPO 2019: Oren Manor Details New Camstar Electronics Suite

In this video interview, Nolan Johnson meets with Oren Manor—director of business development for Mentor, a Siemens Business—to discuss the introduction of their new Camstar Electronics Suite software, an innovative manufacturing execution system (MES) for electronics.

RTW IPC APEX EXPO 2019: For Elmatica, the Future is All About Data

At this year's IPC APEX EXPO, guest editor Judy Warner sits down with Elmatica CEO Didrik Bech to discuss the company's business model and CircuitData, their award-winning open-source PCB design data language.

The Designers Council: A Chapter Primer From the Ground Up

Thinking it might be a way to make new contacts with PCB designers in Orange County, I attended a couple of Designers Council meetings. The chapter president at that time was Paul Fleming, who asked me to be part of his steering committee because he learned that I had spent decades in fabrication. Within a few months, he had gotten a job transfer to Arizona, so he twisted my arm to take over as the chapter president. I agreed, but little did I know that this would become a major turning point in my PCB career.

Words of Advice: Flex Design Problems

In a recent survey, we asked the following question: What are your biggest problems related to flex design? Here are just a few of the answers, edited slightly for clarity. How many of you would agree that "educating the customer" is your biggest challenge?

AltiumLive Munich: Day 1 Keynotes

The weather forecast was wrong! Despite my apprehension and winter clothes, there was very little snow at the Hilton Munich Airport. It could have been any season of the year inside the splendid convention facility, which was also the venue for the second European AltiumLive design summit. AltiumLive brought together a family of over 220 electronics engineers and designers eager to learn from top industry experts and applications specialists who were equally eager to share their knowledge and experience freely.

Happy Anniversary, Gerber Format: Looking Ahead to Digital Innovation

This year, we celebrate the 55th anniversary of the introduction of the Gerber machine language format. We can thank H. Joseph Gerber, the man who took manual PCB design to the next level with the automated photoplotter, for giving us this format in 1964. Gerber immigrated to the United States in 1940 with his mother following the death of his father during the Holocaust. Gerber started Gerber Scientific Instrument Company in 1948 to commercialize his first patented invention—the variable scale.

Words of Advice: Advice for Systems Designers

In a recent Design007 survey, we asked the following question: What advice would you give an OEM system designer? Here are just a few of the replies, slightly edited for clarity.

AltiumLive Munich Draws Designers from Around Europe

I’m finally unpacked after last week’s AltiumLive PCB design summit in Munich. Much like the AltiumLive event I attended in San Diego last October, the conference drew hundreds of PCB designers. This marked the second AltiumLive PCB design summit held in Munich, and Altium seems to have it down to a science. I spoke with designers from Germany, Austria, the Netherlands, and Belgium, just to name a few countries. Many of them were involved in the automotive segment but some were in medical and industrial controls as well. It’s great to be at an event that is full of PCB designers, because designers are few and far between at most PCB industry events.

CES 2019 Showstoppers, the Show Floor, and Some Neat Stuff

CES 2019 is over, and those of us who spent four to five days trying to see and hear as much as possible are in recovery mode. There were over 182,000 attendees, and 6,600 of us were media all trying to get to as much of the 2.9-million-square-feet exhibit space as possible.

The Quest for Perfect Design Data Packages

There’s an ongoing problem in the PCB industry: fabrication shops are receiving incomplete or inadequate design data packages, leaving manufacturers scrambling to fill in the blanks. For a quick-turn prototype shop like Washington-based Prototron, with over 5,000 customers and up to 60% of orders coming from new customers each month, that can add up to a lot of wasted time and effort just in the quoting stage. Dave Ryder, Prototron president, and Mark Thompson, engineering support, delve into this continuing issue and more.

Altium Prepares for Munich Show as Growth Continues

It’s been just two months since the AltiumLive event drew several hundred designers to San Diego, California, and Altium is already gearing up for the next show in Munich, Germany (January 15–17, 2019). I recently spoke with Chris Donato, VP of global sales for Altium, about the upcoming AltiumLive show as well as the company’s growth over the past few years.

Alun Morgan Discusses AltiumLive Munich Keynote

EIPC Chairman Alun Morgan will deliver a keynote speech at this week’s AltiumLive event in Munich, Germany. He gave us a quick preview of his keynote, and explained what his new job entails as technology ambassador with Ventec International Group.

January 2019 Issue of Design007 Magazine Available Now

The component shortage is getting crazy. Some PCB designers are finding their favorite capacitors on 50-week and 80-week lead times, or worse. How do you design a board today when the components you need won’t be available for a year or more? In the January 2019 issue of Design007 Magazine, we asked our expert contributors to explain the current component shortage, as well as some of the workarounds that can help you get your next design out the door sooner rather than later.

A Fractal Conversation with Jim Howard and Greg Lucas

Veteran PCB technologists Jim Howard and Greg Lucas have made an interesting discovery: Certain shapes of copper planes make a PCB run more efficiently than other shapes, a process they dubbed fractal design. It doesn’t appear to cost a penny more, and testing suggests that fractal design techniques could eliminate edge noise. Barry Matties and Andy Shaughnessy asked Jim and Greg to discuss the fractal design process, and the advantages of using this technique.

Words of Advice: Streamlining Your Design Process

In a recent Design007 Survey, we asked the following question: What would help you streamline your design process? Here are just a few of the answers, edited slightly for clarity.

Rainer Beerhalter Discusses His AltiumLive Munich Presentation

Rainer Beerhalter is a physicist, and according to his design bureau’s website, “founder, owner, and mastermind” of B GMBH. Rainer attended the first AltiumLive in Munich in 2017, and he’s returning to this year’s event in Munich January 15–17. I asked him to tell us about the class he’ll be teaching in Munich, and why he decided to come back for the sophomore AltiumLive show.

Birds of a Feather: PCB Carolina and the RTP Designers Council

At PCB Carolina 2018, I met with show founders Tony Cosentino, Randy Faucette, and Lance Olive, who are all employees at the Better Boards service bureau in nearby Cary. I asked the trio to discuss the show’s history, its relationship to the Research Triangle Park (RTP) North Carolina Chapter of the IPC Designers Council, as well as the show’s tremendous growth over the past few years.

Words of Advice: Design Challenges

In a recent Design007 survey, we asked the following question: "What are your biggest design challenges?" Here are just a few of the replies, edited slightly for clarity.

Top 10 Most-Read PCB Design Articles of 2018

Every year, we like to take a look back at the most popular PCB design news, articles, interviews, and columns. Without further ado, here are the top 10 most-read PCB design articles from the past year. Check them out.

Dan Beeker on His AltiumLive Munich Keynote and Battle With the Status Quo

Dan Beeker, senior principal engineer with NXP Semiconductors, was one of the speakers at the first AltiumLive event in San Diego in 2017. Now, he returns to AltiumLive 2019 in Munich from January 15–17 with a keynote titled, “It’s All About the Space.” Here, he discusses his keynote, which focuses on the need for designers to understand the behavior of electromagnetic fields, and why the status quo for advanced PCB design must change from, “We are going to fail,” to, “We are going to pass.”

Susy Webb: The History and Future of the Designers Council

When we started planning this issue on the IPC Designers Council, I knew I’d have to speak with design instructor Susy Webb, a longtime DC member and currently an executive board officer. I asked Susy to discuss how she first got involved with the DC, why designers should join their local chapter, and what the future holds for this group.

Calculation of Frequency-Dependent Effective Roughness Dielectric Parameters for Copper Foil Using Equivalent Capacitance Models

Knowledge of the correct parameters of laminate PCB dielectrics refined from any copper foil roughness impact and the proper foil roughness characterization are important constituents of modeling high-speed digital electronics designs.

In Medical PCB Design, Innovation Never Stops

Medical electronics is an exciting field to be working in right now with new ideas coming online almost daily. We last interviewed medical PCB designer Kenneth MacCallum in 2015. Recently, I asked him to give us an update on trends he sees in medical electronics, and some of the challenges in adapting the latest technology to this segment of the industry.

Effects of PCB Fiber Weave on High-Speed Signal Integrity

This article studies the effect of PCB fiber weave on signal integrity in terms of mode conversion and differential channel loss due to intra-pair skew. The study used Keysight ADS 2DEM simulation to observe s-parameter (i.e., insertion loss and differential to common-mode conversion) and an eye diagram for signal transmission at 1 Gbps and 10 Gbps.

Dock Brown on Succeeding at Failure Analysis

Dock Brown of DfR Solutions gave a keynote speech at SMTAI, “Requirements for Both Cleaning and Coating to Building Medical Hardware.” Barry Matties and Happy Holden sat down with Dock to discuss the current trends he sees in failure analysis, the concept of “rules versus tools,” and how predictive engineering software used early in the design cycle can help predict failures in components and microvias and drive cost down.

Randy Burcham Discusses New Techniques for BOM, Daughterboards

During AltiumLive, I spoke with IOTA Engineering's Randy Burcham, who taught several classes during the event. He explained his methodology for filtering BOM data as well as his new approach to working with daughterboards and how he was up and running on Altium tools after only three days.

The Readers Speak: The Design Data Format Survey

If you’re or designer or a design engineer, the odds are good that you have a few things to say regarding design data formats. We want to hear from you! Your participation in this design data survey would be much appreciated. We know that your time is valuable, and you’re getting ready for the holidays, so we’ve kept it short and sweet.

Martin Cotton’s Parting Shot

Martin Cotton is a unique personality in the PCB industry. As Cotton says, “I’m a designer—look at my haircut!” Cotton gave the keynote at the Institute of Circuit Technology’s 2018 Harrogate Seminar, challenging his audience to consider laminate dielectric properties in the context of power and cost in a presentation entitled 'The Effect of the Dk of a PCB Laminate on the Cost-effectiveness of Office Rental Space. Intrigued?' Read on!

Embedded Inductors with Laser Machined Gap

The power magnetics are often the largest and most expensive devices in the circuit. Integrating them into either a power converter module or system board can significantly reduce size and cost of the power converter function. This work presents the fabrication of embedded inductors and the experimental laser machining of gaps in the underlying ferrite structure.

Words of Advice: Streamlining Your Design Process

In a recent Design007 Survey, we asked the following question: What would help you streamline your design process? Here are just a few of the answers, edited slightly for clarity.

Mentor Discusses New DFT, DFM, and Design Verification Tools

At electronica 2018, John McMillan, digital marketing program manager-Electronic Board Systems, and Mark Laing, business development manager-Valor Division of Mentor, a Siemens business, discuss new tools for PCB design verification, as well as design for manufacturing (DFM) and design for testing (DFT).

Rick Almeida Discusses DownStream's Latest News

At the 2018 electronica exhibition in Munich, Rick Almeida, founder of DownStream Technologies, brings Editor Pete Starkey up to speed with the company’s latest news.

Martyn Gaudion on Signal Integrity Modelling and Stackup Tools

The accuracy of signal integrity modelling continues to improve, and stackup tools are becoming widely used, which now include material suppliers' datasheet information. During the recent electronica show in Munich, Germany, Martyn Gaudion, managing director at Polar Instruments, explained how Polar often serves as a bridge between PCB design and fabrication, and why educating his customers is so critical.

Words of Advice: Fabricator Feedback?

In a recent Design007 Survey, we asked the following question: What is the most important feedback that you receive after your board is manufactured? Here are just a few of the answers, edited slightly for clarity.

New Grad Designs PCBs for Smart Baby Beds

The best ideas in the electronics industry improve the quality of our lives. At AltiumLive, I ran into Tamara Jovanovic, a new PCB designer and junior electrical engineer with Happiest Baby, a Los Angeles-based company that makes smart beds that can protect babies from crib death. After joking that I save the world from dangling participles while she’s saving babies, I asked Tamara to tell us more about smart baby beds, and how she got into PCB design in the first place.

New Designers Council Column: The Digital Layout

The IPC Designers Council is launching a new column in Design007 Magazine: “The Digital Layout.” I recently asked two IPC Designers Council (DC) Executive Board members, Mike Creeden and Stephen Chavez, to discuss the content and objective of their new column, and how this all ties in with the DC.

Stephen Chavez: Breaking the Design Data Bottleneck

When we started planning this issue on design data, I knew we’d have to speak with PCB designer and EPTAC design instructor Steph Chavez. In this interview, he explains some of the biggest issues related to good design data handoff, and he offers some ways forward.

Design Data: File Naming Conventions

Working for an EMS provider, I am often asked to make sense of customers’ PCB design data packages that must be audited for completeness and manufacturability. Quite often, EMS operations receive data to produce a PCB design and begin the auditing process, only to be called off due to customer changes. Sometimes the data is incomplete, or it is missing one or more of the data files required to fabricate the PCB at the supplier. There are also occasions where a customer has sent files that were supposed to be the updated version but were not changed at all.

Impact of Serpentine Routing on Multi-gigabit Signal Transmission

Serpentine is a technique to minimize skew or misalignment of differential pairs. The number of segments and intra-pair spacing of serpentining impacts the high-speed signal transmission. As the intra-pair gap is enlarged for serpentining, the characteristic impedance of the PCB trace in differential mode will rise. This leads to impedance discontinuity, signal reflection, and ultimately, attenuation. The signal attenuation is heavily dependent on the number of segments and intra-pair spacing of the serpentine.

At GreenSource, Lean and Green Starts on the Front End

GreenSource is the first new captive shop in American in decades, and one of the first waste-free board shops as well. The CAM engineers all work remotely, and they can launch a job without ever entering the facility. I spoke with JanNell Taylor and Andy Schilloff, who work at the CAM office in New York. We discussed what it’s like working for a company that plays by its own rules, and what they're doing to get ready for the day GreenSource goes commercial

Life Beyond 10 Gbps: Localize or Fail!

Ideally, all interconnects should look like uniform transmission lines (or wave-guiding structures) with the specified characteristic impedance. In reality, an interconnect link is typically composed of transmission lines of different types (microstrip, strip, coplanar, coaxial, etc.) and transitions between them such as vias, connectors, breakouts and so on. Transmission lines may be coupled to each other that cause crosstalk. The transitions may reflect and radiate energy due to discontinuities in signal and reference conductors. The crosstalk, reflections and radiation cause unwanted and sometime unpredictable signal degradation.

Achieving Minimal Crosstalk in Multi-board Interconnect

In an electronic system, the signal transmission exists in a closed-loop form. The forward current propagates from transmitter to receiver through the signal trace. On the other hand, for a single PCB, the return current travels backward from receiver to transmitter through the ground plane closest to the signal trace. Meanwhile, for multi-board interconnect (e.g., connectivity through flex or ribbon cable), the return current travels back to the transmitter through the ground or return wire, preferably as close as possible to the signal wire. The path of forward current and return current forms a loop inductance.

ESD Alliance Advisory Council to Shape ES Design West at SEMICON West

The Electronic System Design Alliance, a SEMI Strategic Association Partner, today hosted the first meeting of the Advisory Council of ES Design West co-located with SEMICON West 2019 West at San Francisco’s Moscone Center, July 9-11, 2019.

Julie Ellis: Communication and Fabrication Knowledge Critical for Designers

Field Application Engineer Julie Ellis of TTM sees it all: good designs, bad designs, and everything in between. Her classes on proper DFM techniques are always a big draw. She taught at the inaugural AltiumLive in 2017 and was back at this year’s event. I caught up with Julie and asked her to discuss some of the things she covered in class. As she points out, many issues could be eliminated if designers communicated with their fabricators and had a better understanding of how PCBs are manufactured.

PCB Carolina 2018 Draws a Crowd of Technologists

PCB Carolina 2018, the one-day tabletop show based in Raleigh, North Carolina, drew quite a crowd to the McKimmon Conference and Training Center at NC State University on November 7. Show managers Tony Cosentino, Randy Faucette, and Lance Olive (all employees of the Better Boards service bureau) said that this year’s event showed signs of growth compared to the 2017 show, which was also larger than the previous year. They estimated that about 1,000 people attended this year, and they expect another increase in attendance in 2019.

Max Seeley’s PCB Design Career is No Fish Story

Max Seeley, senior electrical, PCB, and manufacturing engineer with 3M, was an instructor at the first AltiumLive event in 2017, and he made a return visit to this year’s event in San Diego. I asked Max why he decided to come back to AltiumLive this year and to share the story of his rather circuitous journey into PCB design, which included a turn as a custom aquarium builder. Everyone in PCB design has a different backstory.

Pulsonix Expands into North America with Version 10 Release

At PCB West in Santa Clara, California, Guest Editor Tim Haag and Publisher Barry Matties sat down with Ty Stephens of Pulsonix on the eve of the software developer's much-anticipated version 10 release date. Stephens outlined many new updates in the upcoming release—which has been in development for over two years—and discussed the company’s desire to break into the highly competitive North American software market.

Amway Sells Beauty Products—and Designs its Own PCBs

During AltiumLive in San Diego, I met Dugan M. Karnazes, an associate electrical engineer and PCB designer at Amway. The company is famous for selling nutritional supplements and soap, but apparently Amway has been busy diversifying over the years. I was interested in finding out more about Amway’s electronics development. Dugan sat down with me to discuss his role at Amway, and how this company grew into an $8 billion global giant.

Cadence Presents New Software System and Technical Papers at PCB West 2018

During PCB West 2018, I spoke with Dan Fernsebner, product marketing group director, and Hemant Shah, product management group director for enterprise PCB products, both with Cadence Design Systems, about their new software launch—DesignTrue DFM Ecosystem. Fernsebner and Shah also address recent technical papers from Cadence on Industry 4.0, IPC-2581, system-level design, and return-path analysis and management.

Altium Designer Increasingly Used for High-Speed Design

I recently met with Mark Forbes, the director of technical marketing at Altium, during the AltiumLive event in San Diego. We discussed Mark’s class on MCAD/ECAD collaboration and the success of AltiumLive, as well as the growth of Altium users who design high-speed PCBs with Altium Designer.

Book Review: The Printed Circuit Board Designer’s Guide to… Producing the Perfect Data Package

Over the course of his career, Mark Thompson, CID+, engineering support at Prototron Circuits, has evaluated thousands of data packages and delivered numerous talks to designers and engineers about how to create the perfect package. In the spirit of “garbage in, garbage out,” data packages must be perfect to create quality boards. Learn all this and more in The Printed Circuit Designer’s Guide to… Producing the Perfect Data Package!

Catching up With Scott McCurdy and Freedom CAD

During PCB West, Scott McCurdy of Freedom CAD Services sat down with Technical Editor Tim Haag for an interview. We discussed Freedom CAD’s latest news, some trends in PCB design software tools, and the continuing need to draw more young people into a career in PCB design.

Rick Hartley is Bullish on PCB Design, 3D Printing

At the recent PCB West in Silicon Valley, Consulting Technical Editor Tim Haag met with long-time design industry veteran Rick Hartley to discuss the changing landscape of circuit board design, the layout designers of the future, and how designers can benefit from 3D printing of circuit boards.

Darwin E. George: Seeking PCB Design Job at Retirement Age

Some of us dream of living a life of leisure at 70. But not Darwin E. George. This septuagenarian wants to find a job designing PCBs. We met up with Darwin at AltiumLive, where he was networking and trying to get his foot in the door with one of the companies that are hiring now. Darwin told us about his career in PCB design, his experience learning a new EDA tool, and why he would rather design high-speed PCBs instead of playing shuffleboard for the rest of his life.

One-Question Survey, Part 2: What Advice Would You Offer a New Designer?

During AltiumLive 2018, the I-Connect007 editorial team asked some of the attendees to answer one question: What advice would you offer to a brand-new PCB designer? Here are just a few of the replies we received.

Mentor and TEXMAC Takaya Team up to Optimize DFT

At SMTAI, Mark Laing of Mentor, a Siemens Business, and Dave Levine of TEXMAC Takaya, sat down with Editor Nolan Johnson to discuss design for test, and their collaboration to improve DFT in PCB design tools and test machinery. They also traced the evolution of DFT over the past decade as it has begun to "left-shift" farther into the realm of the designer, all the way up to schematic entry.

Karl-Heinz Fritz on Cicor’s DenciTec Technology

In a recent interview, Karl-Heinz Fritz, VP of technology at Cicor, discusses the business, DenciTec technology, the impact of tariffs on trade, and applications for 3D printing and additive manufacturing, including potential new opportunities for PCB designers.

Leo Lambert Discusses IPC Training Program Updates

During SMTA International, EPTAC Technical Director Leo Lambert and Managing Editor Nolan Johnson discuss a variety of recent IPC educational program updates, many of which are designed to smooth out the training process. Lambert also explains how these changes will allow EPTAC instructors to optimize the way they present IPC classes, which include the CID and CID+.

Simon Fried: Additive Manufacturing Through Printed Electronics

Simon Fried, president of Nano Dimension, discusses how the company has taken the additive manufacturing process to the next level through printed electronics. He also shares his thoughts on the growing demand for 3D circuits, as well as how this could potentially be a game-changer for PCB designers.

Cadence: Bullish on AI

David White has been involved with artificial intelligence research for almost 30 years. Now, David is the senior group director of R&D for Cadence Design Systems, and I knew we’d have to speak with him for this issue on AI. In a recent interview, we discussed his decades of work in AI, Cadence’s research into AI and machine learning, and what he believes AI could mean for the EDA tools of the future.

Artificial Intelligence: The Future of EDA?

Artificial intelligence (AI) has been making inroads into a variety of industries in the past decade or so, from automobiles to medical devices. Naturally, EDA tool companies are taking a look at AI. Does AI offer a way forward for PCB design tool developers? I recently interviewed Paul Musto, director of marketing for the Board Systems Division of Mentor. We discussed Mentor’s plans for integrating AI into EDA tools, and why we may be at the very beginning of understanding the pros and cons of this new technology.

One-Question Survey: What Advice Would You Offer a New Designer?

During AltiumLive 2018, the I-Connect007 editorial team asked some of the attendees to answer one question: What advice would you offer to a brand-new PCB designer? Here are just a few of the replies we received.

Institute of Circuit Technology Hayling Island Seminar

After an extreme summer heat wave had left trees dehydrated and struggling to morph into their customary display of reds and golds, the leaves were brown and brittle as the great and good of the UK printed circuit board industry crossed the bridge from the mainland of the south coast of England to Hayling Island for the autumn seminar of the Institute of Circuit Technology on September 20, 2018.

AltiumLive 2018 a Mecca for PCB Designers

AltiumLive 2018 San Diego is now in the history books. This is the second annual AltiumLive (North America), and it was even better than the first. With nearly 300 hundred participants, from all parts of the country and industry, the event was a huge success.

John R. Watson Returns to AltiumLive in San Diego

When AltiumLive launched last year, John R. Watson, CID, of Legrand signed up as an instructor. He’ll be presenting at this week’s AltiumLive in San Diego as well. I spoke with John recently about his AltiumLive class, and the state of PCB design. He also discussed a few tricks for designing boards with components that are currently on an 80-week lead time, and why this problem is likely to get worse before it gets better.

AltiumLive to Feature Altium Designer 19 Release

This week, Altium Designer 19 will be officially launched to the public during AltiumLive, which takes place October 3-5 in San Diego. I asked Altium COO Ted Pawela to give us a preview of Altium Designer 19, and to explain how AD19 fits in with the company’s long-term plans. He also discusses Altium Live’s plan to provide PCB design content that is not vendor-specific to help support the entire industry, not just customers.

Front-End Expert Mark Thompson of Prototron Circuits Publishes Book on Producing the Perfect Data Package

Errors and inaccuracies slow the process down because the CAM department has to correct their data package or ask customers to clarify their intent. In the quick-turn prototype business where people pay for time, a slowdown on a three-day turn can be a disaster. I recently sat down with Thompson to find out more about his new book and discuss the quest for the perfect data package.

Artificial Intelligence: More Questions than Answers

I’ve been covering artificial intelligence (AI) and related technologies for years, particularly at events such as the annual Consumer Electronics Show (CES). As I write this, we are in the run-up to CES 2019, and the Artificial Intelligence Conference in San Francisco, so the AI landscape is likely to change—at an ever-accelerating rate. Let’s look at some of the challenges facing AI now, and then after CES 2019 we can take another look.

Lee Ritchey Returns to AltiumLive with 32 Gbps Design Class

Lee Ritchey was one of the instructors for last year’s inaugural AltiumLive event, which drew hundreds of PCB designers. Now, Lee is back, teaching a high-speed design class at next week’s AltiumLive in San Diego. That class is sold-out, but you can catch Lee teaching the same class at the January AltiumLive event in Germany. I asked Lee to explain what he plans to cover in this course, and why PCB designers and design engineers should consider attending one of the events.

Moving From 28 Gbps NRZ to 56 Gbps PAM-4: Is it a Free Lunch?

The usual way of signaling through PCB interconnects is a two-level pulse, an encoding of 1s and 0s or bits, named NRZ (non-return-to-zero) or PAM-2 line code type. Increasing the data rate with the NRZ code type presents some obstacles. For a 28 Gbps NRZ signal, the bit time is about 35.7 ps with the main spectral lobe below 28 GHz. For a 56 Gbps NRZ signal, the bit time is about 17. 86 ps, with the main spectral lobe below 56 GHz. One can feel the problem already: Getting PCB interconnect analysis and measurements up to 56 GHz and beyond is very challenging, to say the least.

Judy Warner: AltiumLive’s Second Year to Be Even Better Than First

Last year, Altium launched its AltiumLive event with shows in San Diego and Munich, Germany. This year, the event has expanded to include an extra day of classes. Altium is gearing up for the San Diego event in early October and the German show in January 2019. I recent spoke with Judy Warner, director of community engagement for Altium, about what designers should expect at both shows, and how the company can build on the success of the 2017 events going into the future.

PCB West 2018 Draws a Crowd of Designers and Technologists

The I-Connect007 team attended UP Media Group’s PCB West 2018 Conference and Exhibition in Santa Clara, California. I have been attending this event for many years, and every year the show is better than the year before. This year was no exception.

PCB Design Challenges: A Package Designer’s Perspective

The challenges faced by the PCB designers of today are significant. If we examine the breadth of designs, we find ever-increasing data rates and more high-speed signal routing that drive additional challenges meeting signal-quality requirements, including reflection signal loss and crosstalk issues. At the same time, designers are being asked to complete designs in shorter cycle times and in smaller form factors. They must come up with new and more complex routing strategies to better control impedance and crosstalk. Manual implementation is often time-consuming and prone to layout errors.

Managing the Challenges of Flex and Rigid-Flex Design

PCB designers working with flex or rigid-flex technology face many potential risks that can derail a project and cause costly design failures. As the name implies, flex and rigid-flex designs comprise a combination of rigid and flexible board technologies made up of multiple layers of flexible circuit substrates, attached internally and/or externally to one or more rigid boards. These combinations provide flexibility for the PCB designer working on dense designs that require a specific form factor. Rigid-flex allows the PCB design team to cost-efficiently apply greater functionality to a smaller volume of space, while providing the mechanical stability required by most applications.

Chuck Bauer Discusses the Future of Packaging

When we decided to cover the future of PCB packaging, we knew we would have to interview Charles Bauer, Ph.D., owner of TechLead Corporation. Chuck recently spoke with Happy Holden, Andy Shaughnessy and Barry Matties about current trends in packaging, the need for product designers and manufacturers to communicate, and why no matter how cool the technology is, cost is still king.

BGA Fanout Routing Overview

PCB developers are deluged with new challenges caused by increasing density and smaller components. Ball grid arrays (BGAs) create particular challenges during layout, with hundreds of connections in just a few square centimeters. Fortunately, designers now have options for addressing these issues.

The Impact of PCB Dielectric Thickness on Signal Crosstalk

Crosstalk is an unintentional electromagnetic (EM) field coupling between transmission lines on a PCB. This phenomenon becomes a major culprit in signal integrity (SI), contributing to the rise of bit error occurrence in data communications and electromagnetic interference (EMI). With the existence of mutual inductance and capacitance between two adjacent transmission lines on a PCB, crosstalk has become more severe due to the shorter signal rise/fall times at today’s higher data speed rates.

Mentor Preparing for Next-Gen PCB Designers

Millennials are the future of our industry. What does this mean for the PCB design community? How do we attract more of these smart young people to the world of PCB design? I asked Paul Musto, director of marketing for Mentor’s Board Systems Division, to explain the company’s initiatives aimed at drawing more young people into PCB design

In With the New at Cadence

The next generation of PCB designers is coming—slowly, but surely. What will this new group of designers mean for EDA vendors like Cadence Design Systems? Andy Shaughnessy recently interviewed Dan Fernsebner, product marketing group director and a veteran EDA guy, and Bryan LaPointe, lead product engineer and representative of the younger generation. They discussed the next generation of PCB designers, some of the best ways to draw smart young people into this industry, and why the PCB designers of the future may need to have a college degree just to get an interview.

Help Wanted: PCB Design Layout Specialist

I was told recently that the designer, aka the PCB layout specialist, is a dying breed soon to be extinct. I wish to reassure my fellow designers that, in my opinion, you are in the catbird seat. You are in hot demand and you should have great opportunities for the remainder of your career. By the way, after reading this article, you may feel empowered to go ask for a raise. Please don’t tell your manager that I sent you!

Advanced Stackup Planning with Impedance, Delay and Loss Validation

A typical PCB design usually starts with the material selection and stackup definition—the stackup planning or design exploration stage. How reliable are the data provided by the material vendors and PCB manufacturers? Can we use these data to predict trace width and spacing for the target trace impedance or to calculate delays or evaluate the loss budget?

Susy Webb: Training the New Generation of Designers

For years, I’ve been running into Susy Webb at PCB West, where one of the classes she teaches is PCB design basics. I always ask Susy about the class, especially the attendees’ backgrounds. Over the years, her class has begun drawing more and more degreed engineers, with fewer “traditional” PCB designers attending. I asked Susy to discuss the next generation of PCB designers, some of the trends she’s seeing among new PCB designers, and the need for designers to take charge of their own design training, whether their management agrees or not.

Thermal Management Materials: Easing the Decision-Making Process

There are many different types of thermally conductive materials, and choosing between them will be dictated by production requirements and application design, as well as critical performance factors that must be achieved.

Multi-board Design with Altium’s Ben Jordan

Not too long ago, historically speaking, most electronic products contained only one PCB. But multi-board designs have become almost ubiquitous over the past decade, and EDA software companies are working to improve and simplify the multi-board design process. Editors Andy Shaughnessy and Stephen Las Marias spoke with Ben Jordan, director of product and persona marketing for Altium, about the company’s multi-board design tools, the challenges that customers face, and the numerous trade-offs that designers must contend with while performing multi-board design.

CPCA 2018 Seminar Overview

I had the good fortune to speak at a seminar sponsored by the CPCA and organized by the China Team of I-Connect007 in Shanghai. This full-day seminar was on one of today’s hot topics, “Automation in PCB Manufacturing.”

3D Convergence of Multiboard PCB and IC Packaging Design

A new generation of 3D multiboard product-level design tools offer major improvements by managing multiboard placement in both 2D and 3D, and enabling co-design of the chip, package and board in a single environment. Multiboard design makes it possible to create and validate a design with any combination of system-on-chips (SOCs), packages, and PCBs as a complete system.

Achieving Optimum Signal Integrity During Layer Transition on High-Speed PCBs

In electronic systems, signal transmission exists in a closed-loop form. The forward current propagates from transmitter to receiver through the signal trace. Meanwhile, the return current travels backward from receiver to transmitter through the power or ground plane directly underneath the signal trace that serves as the reference or return path. The path of forward current and return current forms a loop inductance. It is important to route the high-speed signal on a continuous reference plane so that the return current can propagate on the desired path beneath the signal trace.

Dave Wiens Discusses Multi-board Design Techniques

For our multi-board design issue, I interviewed Dave Wiens, product marketing manager for Mentor, a Siemens business. We discussed how the multi-board design technique differs from laying out single boards, along with the planning, simulation and analysis processes required to design multi-board systems.

Sensible Design: Protecting PCBs from Harsh, Challenging Environments

Think very carefully about the sort of environment your PCB is likely to encounter. It is easy to over-engineer a product so that it will survive the very worst of conditions, but worst conditions may only be fleeting or transient. Therefore, a resin solution with a lower temperature performance specification will often cope. Take temperature extremes, for example. Your application may experience occasional temperature spikes of up to 180°C, which you might feel deserves treatment with a special resin.

Paving the Way for 400Gb Ethernet and 5G

This article briefly introduces the 4-level pulse amplitude modulation (PAM-4) and its application in 400 Gigabit Ethernet (400GbE), to support the booming data traffic volume in conjunction with the deployment of 5G mobile communications. Furthermore, this article also highlights the essential pre-layout effort from signal integrity perspective for physical (PHY) link design on a PCB, including material selection, transmission line design and channel simulation to support 56Gbps data rate that paves the way for seamless communication in 400GbE.

Excerpt: The Printed Circuit Designer’s Guide to…Flex and Rigid-Flex Fundamentals

The design process is arguably the most important part of the flex circuit procurement process. The decisions made in the design process will have a lasting impact, for better or worse, throughout the manufacturing cycle. In advance of providing important details about the actual construction of the flex circuit, it is of value to provide some sort of understanding of the expected use environment for the finished product.

Faster Board Speeds Demand Constraint-Driven Design

Using powerful constraint techniques can be a double-edged sword. While the design process is made much safer by including constraints, it is all too easy to over-constrain the design and make it impossible to complete routing and placement. Even paper design guidelines can make products uneconomic to produce unless a great deal of engineering knowledge is applied during the design.

APCT Moves into Rigid-Flex with Cartel, Cirtech Acquisition

When I spoke with APCT President Steve Robinson a year ago, he said he was interested in adding flex and rigid-flex capabilities, and working closely with designers and engineers. With the recent acquisition of Cartel and their subsidiary Cirtech, APCT now has a flex and rigidflex facility, along with military and aerospace certifications. At DesignCon 2018, I asked Steve to discuss these acquisitions and what they mean for APCT and their customers.

Making the Most of PCB Materials for 5G Microwave and mmWave Amps

Ready or not, 5G is coming, and it will require the right circuit materials for many different types of high-frequency circuits, including power amplifiers. 5G represents the latest and greatest in wireless technology, and it will be challenging to design and fabricate, starting with the circuit board materials, because it will operate across many different frequencies, such as 6 GHz and below, as well as at millimeter-wave frequencies (typically 30 GHz and above).

Mark Thompson: What Designers Need to Know about Fab

Mark Thompson wants to help PCB designers. He’s seen it all in CAM support at Prototron Circuits: the incomplete or inaccurate data packages, boards that are unnecessarily complex or over-constrained, and so much more. Mark just returned to writing his popular Design007 Magazine column, The Bare (Board) Truth, which addresses questions such as, “What happens to your design at CAM?” I asked Mark to explain why it’s so important for designers to communicate with their fabricators, and why they need to get out of the office and visit a board shop every now and then.

Field Trip: CID Class Sees How Flex is Made at Streamline Circuits

While I was teaching my CID class for EPTAC in Santa Clara, I learned that we were only a block away from Streamline Circuits. Streamline does a lot of military and aerospace work, as well as communications and industrial electronics. The company manufactures quite a bit of multilayer flex and rigid-flex circuits, in addition to rigid boards. This would make a great field trip for my CID class!

Experts Discussion: What Does 5G Mean to Materials and EDA Tools?

Whether we’re ready for it or not, 5G technology is coming. We decided to speak with John Hendricks, market segment manager for wireless infrastructure at Rogers Corporation, and Ben Jordan, director of product and persona marketing for Altium, about the challenges related to 5G and what this means for PCB designers and fabricators.

Design and Manufacturing Perspectives from DISH Technology’s Les Beller

I recently interviewed Les Beller, a long-time PCB designer who is now a manufacturing engineer for DISH Technology. We discussed his company’s business shift towards 5G and streaming, and the stresses that puts on a design team. He also explains the greatest challenges that he’s facing with HDI and higher frequencies, and the added importance for designers to understand the manufacturing process and DFM tools.

ITEQ Ready for Autonomous and Electric Vehicles of the Future

During DesignCon 2018, I spoke with Tarun Amla, the executive vice president and CTO of ITEQ. We discussed ITEQ’s future plans, including the development of materials for cutting-edge technology needs, such as autonomous and electric vehicles, as well as 5G technology.

Geeking Out at Geek-A-Palooza MSP 2018

Kiersten Rohde, I-Connect007 editor, covers Geek-A-Palooza MSP 2018. Geek-A-Palooza "is a different kind of gathering that combines networking with a fun, relaxing atmosphere." This event provided an opportunity for local electronics geeks from every industry segment to gather for a professional social event that included great music, food, drinks, games, raffle prizes, and booths.

EDADOC: A Driving Force in China's Automotive Electronics Design

EDADOC is one of the biggest providers of PCB design and manufacturing services in China, with a long history in automotive electronics design and manufacturing. China Editor Edy Yu recently conducted an email interview with EDADOC R&D Technical Research Manager William Zhou and Brand Planning Specialist Wen Ling, who collaborated on their answers. We discussed the challenges related to designing and fabricating automotive PCBs, the opportunities in this segment, and the trends they see in the market for autonomous and electric vehicles.

American Standard Circuits Discusses New RF/Microwave eBook

During DesignCon 2018, I met with Anaya Vardya and John Bushie of American Standard Circuits. Anaya and John recently co-wrote an eBook, published by I-Connect007, titled "The Printed Circuit Designer’s Guide to Fundamentals of RF/Microwave PCBs." We discussed their goals and the scope of this handy microbook, which features plenty of information that even high-speed digital designers can benefit from.

Show & Tell: IPC APEX EXPO 2018 is on the Books!

I-Connect007's Happy Holden reviewed the recently concluded IPC APEX EXPO 2018. Among the highlights: Less than 10% of all new orders arrive at the PCB fabricator’s facility with complete, accurate design data. Most have missing or incorrect data.

Expert Discussion: Dan Feinberg on Automotive Electronics

A fixture at the Consumer Electronics Show, Dan Feinberg has been covering autonomous, hybrid and electric vehicles for years, along with the rapid growth of high-tech electronic gadgetry in traditional vehicles. In this freewheeling expert discussion, Dan spoke with Barry Matties, Patty Goldman, and Happy Holden about the future of auto electronics and what it all means to the PCB industry.

Zuken Pulling Ahead in Automotive PCB Design

Zuken has been developing PCB design tools for the automotive market for years. With automotive electronics worth over $200 billion globally, and growing every day, Zuken is preparing for a brave new world of smart cars, and autonomous and electric vehicles. I spoke with Humair Mandavia, chief strategy officer with Zuken, and asked him about the challenges facing automotive PCB designers, and the trends he’s seeing in this constantly evolving segment of the industry.

Interview: Incoming and Outgoing Presidents of Polar Instruments

Polar Instruments has hired some talented technologists recently, including a new president, Dorine Gurney. At DesignCon, I had the opportunity to sit down for an interview with Dorine and Ken Taylor, Polar’s outgoing president. We talked about Dorine’s objectives for the company and Ken’s plans for life after Polar.

Porsche Engineering…by Design

Thomas Wischnack of Porsche Engineering is currently designing the high-power charging infrastructure that will go inside the next generation of automobiles. Thomas was a keynote speaker at AltiumLive 2017 in Munich, Germany. Barry Matties met with him to learn more about Porsche’s hardware and circuit development and what Porsche does to continually bring new designers into the fold.

Estonia a Hot Spot for New Technology

Most Westerners know very little about Estonia. A former Soviet Bloc country, Estonia has come a long way since restoring its independence in 1991. Electronics companies are thriving in this tiny EU member country, and capital city Tallinn has been called “Silicon Valley on the Baltic Sea.” During productronica, I met with Arno Kolk, general manager of the Estonian Electronics Industries Association, and we discussed the explosion of new technology in this “Baltic Tiger” country?

Fadi Deek Discusses Mentor’s New Power Integrity eBook

At DesignCon 2018, I ran into Mentor’s Fadi Deek, the author of both of Mentor’s I-Connect007 eBooks: the newest, "The Printed Circuit Designer’s Guide to Power Integrity by Example," and their first book, "The Printed Circuit Designer’s Guide to Signal Integrity by Example." We sat down and discussed how the idea for the books came about, as well as some of the power integrity challenges facing PCB designers and engineers.

Jan Pedersen: CircuitData Enhances Current Data Formats

During the Design Forum at IPC APEX EXPO 2018, Jan Pedersen, senior technical advisor for the PCB broker Elmatica, gave a presentation on CircuitData. The language is designed to help facilitate other design data transfer formats such as Gerber, ODB++, and IPC-2581. Jan spoke with Managing Editor Andy Shaughnessy and Contributing Technical Editor Happy Holden about how this open language works with the existing data formats, as well as the need to eliminate paper documents from design process, and how the industry can help shape this open-source language.

Martin Cotton Discusses Ventec’s New Book and Low-Loss Materials

During DesignCon 2018, Andy Shaughnessy sat down for an interview with Martin Cotton, director of OEM projects for Ventec. Martin was a PCB designer for years, so he has experience on both sides of the desk. They discussed Ventec’s reasons for coming to DesignCon, their expansion into low-loss materials, and Ventec’s new I-Connect007 book, The Printed Circuit Designer’s Guide to Thermal Management with Insulated Metal Substrates.

Mentor’s HyperLynx Automates SERDES Channel Design

Mentor recently released the newest version of its HyperLynx signal integrity software. This version may be the first SI tool in the industry to fully automate SERDES design channel validation. I spoke recently with Chuck Ferry, product marketing manager with Mentor, about the new HyperLynx and some of the new serial link design capabilities that customers have been demanding.

Julie Ellis: TTM’s Interface Between Designer and Fabricator

As a field application engineer for TTM, Julie Ellis sees the problems that can occur between circuit board designers and manufacturers. Barry Matties spoke with Julie at the AltiumLive event in Munich about the age-old problem of throwing designs “over the wall,” the trend towards HDI, and what advice she would give new designers.

Cadence’s Sigrity Automates Power Integrity Simulation Earlier in Design Cycle

DesignCon is always a great place to check out the latest PCB layout and simulation software tools. During DesignCon 2018, Guest Editor Kelly Dack met with Sam Chitwood, a product engineer with Cadence. Sam explained how the Cadence Sigrity simulation software now allows users to make decisions early in the design process, and how this can help optimize the design of the power delivery network and ensure signal integrity in complex PCBs.

South African Electronics Industry Going Strong

EDA Technologies is a South African company that offers PCB design engineering services, mainly for the domestic electronics market, which makes up a surprising 12.5% of South Africa’s GDP. Barry Matties recently spoke to founder Nechan Naicker about the benefits of outsourcing to South Africa, the market segments they service there, and any advice he had to offer from his 20+ years in the industry.

SnapEDA Harnesses Technology in Providing Verified Parts

Like many young entrepreneurs, Natasha Baker knew she wanted to run her own company years before she finally pulled the trigger. But she waited until the time was right, developed a business plan, and stuck to it. Now, five years after SnapEDA was launched, the company continues to expand its library parts and symbol creation services, with the help of some of today’s most cutting-edge technology. I recently caught up with Natasha, and we discussed how her team utilizes technology that has helped SnapEDA to become a major player in this space.

Worldwide Systems Consulting: Tools, Process, People

In Munich for productronica, Editor Andy Shaughnessy and Publisher Barry Matties sat down with Mentor’s Jay Gorajia, director of worldwide systems consulting. Gorajia discussed Mentor’s systems consulting business, their focus on the “digital twin,” and how their acquisition by Siemens is benefitting Mentor and their customers.

RTW IPC APEX EXPO: Ucamco's New Tools for Designers, Fabricators

European Editor Pete Starkey and Ucamco partner Luc Maesen discuss Ucamco's newest solutions for PCB designers and fabricators, YELO (Yield Enhancing Layout Optimizer) and Communic8tor. Both of these products were recently launched for users in the North American market.

Bridging the Customer-Supplier Gap

For the February issue of Design007 Magazine, we interviewed Nolan Johnson of Sunstone Circuits, and Dan Beaulieu of DB Management—our regular columnist—on the topics of knowing your customers, the challenges in dealing with customers, and providing excellent customer satisfaction.

IPC-2581 Demo Draws a Crowd at IPC APEX EXPO

During IPC APEX EXPO 2018, the IPC-2581 Consortium held a demo of this open-source data transfer standard, attracting numerous designers, fabricators and assembly providers. Jim Pierce of Axiom Electronics and Bob Miklosey of Aegis Software sat down to discuss the demo and their involvement with the consortium. Axiom now charges more for designs submitted in the Gerber format.

MakeHarvard 2018: The Super Bowl of Makeathons

The inaugural MakeHarvard event was everything one would expect from the title, and more. Sunstone Circuits’ Nolan Johnson and Dustin Jablonski served as both mentors and competition judges. Sunstone sponsored a prize for the best feats of reverse engineering and documentation. Sunstone’s reverse engineering competition was one of the most hotly contested. Judging was based on creativity, depth, technical difficulty, usability, scalability, and value to society.

Still Using 1980s Formats for Design Data Handoff?

The IPC-2581 format was created in the early 2000s with the merger of two competing formats: ODB++ and GENCAM. The new format, the brainchild of the late Dieter Bergman, languished with no adoption until 2011, when a small group of companies created the IPC-2581 Consortium with the goal of getting this open, neutral and intelligent format adopted. The consortium has been growing steadily in recent years. Its membership now includes more than 100 associate members in addition to its more than 90 corporate members.

RTW IPC APEX EXPO: Polar Instruments Discusses New Engineer, SpeedStack Upgrades

During IPC APEX EXPO 2018, Polar Instruments' Lupita Maurer and Geoffrey Hazelett sat down with Editor Andy Shaughnessy to discuss upgrades to their SpeedStack tool and Lupita's new position with the company.

RTW IPC APEX EXPO: Judy Warner Discusses EDA Market and Altium's Growth

Judy Warner, Altium's director of community engagement, discusses what it's like transitioning to the EDA software side of the business. Warner also highlights Altium's growth after reporting first-half earnings.

IoT: Let’s Put the “A” Back into EDA

If I say IoT, most people today will immediately conjure up some notion in their mind. This is especially true in the engineering community, where many of us are hanging the future of our careers on the Utopian vision of a clean, beautiful environment with hidden networks and sensors everywhere.

RTW IPC APEX EXPO: Valor Tool Benefits from Merging Mentor, Siemens Technologies

Oren Manor, director of business development, discusses the convergence of the electrical and mechanical discplines made possible through Mentor's merger with Siemens. Manor also explains how Mentor's Valor platform now utilizes Siemens' "digital twin" concept.

Barry Katz Discusses SiSoft's DesignCon Papers and Plans for 2018

SiSoft President and CTO Barry Katz sat down with Editor Andy Shaughnessy to share his thoughts on the company's papers presented during DesignCon 2018, as well as SiSoft's latest products and plans for 2018.

Frontline's InStack Viewer Helps Designers and Fabricators

Ben Quarles, software solultions business manager at Frontline, and Editor Andy Shaughnessy discuss the new InStack Viewer, which allows PCB designers and fabricators to investigate impedances, material properties, and other attributes of the correct stackup.

Part 2: EIPC’s 2018 Winter Conference in Lyon, Review of Day 1

We continue with the rest of Pete Starkey’s report on Day 1 of the EIPC Winter Conference in Lyon, France. Included in this segment are presentations by Ventec, Ericsson, TTM and others, plus photos of their evening tour of Alstom.

Real Time with... DesignCon: Mentor Partners with Sintecs on EU Project

During DesignCon 2018, Guest Editor Kelly Dack interviewed Sintecs' CEO Evert Pap and system architect Hans Klos in the Mentor booth. Sintecs used Mentor's software tools to design the dReDBox, a virtual prototype project funded by the European Union.

Real Time with... DesignCon: User Feedback Helped Shape Altium Designer 18

During DesignCon 2018, Altium’s Judy Warner sat down with Editor Kelly Dack for an update on Altium’s software tools. She explains how user feedback lead the company to fix the bugs in Designer 17 during the development of Designer 18, and how “community engagement” is more than a buzzword for Altium.

Entering—and Enjoying—the Industry

I was recently given the opportunity to write an article for our publication. Being somewhat new to this industry, I figured it would be a good idea to write an introduction on how I got into electronics—specifically the part most people my age don’t give thought to.

Out-of-the-Box Innovation Strikes a Chord at NAMM 2018

The National Association of Music Merchants (NAMM) holds two shows each year; the first is in Anaheim in January, and the second in Nashville in July. The January show is huge, attracting 100,000 visitors during its four-day run. My friend and editor (and bass player) Dan Feinberg has discussed how difficult it was for him to cover the CES show in a few days, and I must echo that sentiment about NAMM. It is one gigantic show.

Who Really Owns the PCB Layout? Part 2

In Part 1 of this series, Paul Taubman made the bold statement that the PCB layout is just as much a mechanical effort as it is an electrical one. In Part 2, he threads the needle, explaining why he believes that a PCB truly a mechatronic design, and why mechanical engineers may be more prepared to take on the PCB layout.

EMA Cloud Lined with Capability

Editor Kelly Dack speaks with EMA Design Automation Marketing Manager Chris Banton about the company's new free cloud-based OrCAD schematic capture tool, OrCAD's design constraint manager, and the Sigrity electrical rule checker.

Rogers Continues Expansion into High-Speed Digital Materials

Mahyar Vahabzadeh discusses a paper presented by his colleague Dr. Allen Horn at DesignCon. He also explains some of the different characteristics Rogers has discovered as they move from RF into high-speed digital materials.

APCT’s Cartel Acquisition Adds Capacity, Technology and Certifications

APCT recently acquired Cartel Electronics and its affiliate, flex and rigid-flex maker Cirtech. During DesignCon 2018, I spoke with APCT President and CEO Steve Robinson about what this acquisition means for the San Jose-based fabricator.

Mentor Focusing on Power and Signal Integrity

Chuck Ferry is a product marketing manager at Mentor, and SI/PI product architect for HyperLynx tools. I spoke with Chuck recently during DesignCon 2018, and he shared some of his thoughts on the industry and Mentor’s plans for this year and beyond.

A Conversation with Dorine Gurney, New President of Polar Instruments

Dorine Gurney has recently been named president of Polar Instruments. With a 30-year resume that includes management positions at Mentor Graphics, Lattice Semiconductor and Tektronix, she takes the reins as Ken Taylor heads into retirement. I recently caught up with Dorine at DesignCon 2018 in Santa Clara, California.

Fully Automated Schematic Verification

Schematic verification is a part of the hardware engineer’s responsibility just as PCB layout verification is an accepted part of the PCB designer’s responsibility. However, with today’s circuit designs becoming more and more complex, time-consuming manual schematic verification is no longer an option. Manual verification of a complex circuit introduces significant risk by not identifying schematic design errors that are, in turn, passed to the downstream processes and ultimately to the fabricated board.

Pulsonix Ready for 2018

Pulsonix has been developing PCB design software for almost 20 years, establishing a reputation for its full-featured, low-cost design tools. Now, the UK-based company wants to break into the US market, and Pulsonix recently showcased its latest tools at PCB West. During the show, I spoke with Business Development Manager Ty Stephens about the company’s latest tools and plans to become a major player in the US market.

What’s New in EDA: The Experts Discussion

We wanted to find out what’s new in the world of EDA. Joining us on our experts conference call were Polar Instruments Managing Director Martyn Gaudion, DownStream Technologies founder Rick Almeida, and Director of Product Management Mark Hepburn and Product Management Group Director of Allegro Enterprise Products Hemant Shah, both with Cadence Design Systems. The group discussed the challenges and opportunities they see in our industry, as well as the need to bring new blood into the PCB design community.

Nano Dimension’s 3D Printing: Prototypes at the Push of a Button?

SICK AG is a global manufacturer of sensors and sensor solutions for industrial applications, with headquarters located in Waldkirch, Germany. After a demo of Nano Dimension’s new 3D printing machine at productronica, Barry Matties met with SICK’s Danny Wernet to discuss its pros and cons and get his overall impression of the technology. Are 3D prototypes really as simple as feeding in a Gerber file and pushing a button?

PCB Cooling Strategies, Part 2

In many PCB designs, component placement plays a decisive role in PCB cooling. But for some boards with areas of high heat and high current, the designer may have to utilize heat sinks, fans, and/or water cooling technology. There are a variety of cooling and heat dissipation options available now, but thermal management research still has a long way to go.

Thermal Management Update with Doug Brooks

I had the opportunity to talk with our contributor Doug Brooks recently. He has been doing some research on temperature effects on PCB traces over the last few years, and I wanted to check the status of his latest thermal efforts. He discussed his work with Dr. Johannes Adam, why temperature charts based on a trace in isolation are inaccurate, and how the industry remained so wrong about PCB temperatures for so long.

PCB Cooling Strategies, Part 1

With the development of communication and IT industries and the ever-increasing demand for information analysis, many chip makers have racked their brains trying to provide customers with better technology, such as increased computing power and storage capacity of chips as well as diversifying their product offerings.

Dr. Johannes Adam Gets Hot on Thermal Management

Thermal management expert Johannes Adam, PhD, was kind enough to take the train from his home in Leimen, Germany to meet with me during productronica in Munich. He is the creator of TRM (Thermal Risk Management) software and contributor, with Douglas G. Brooks, of "PCB Trace and Via Currents and Temperatures: The Complete Analysis, 2nd Edition." He’s also working on his own book on thermal management. Johannes sat down for an interview, and I asked him to share his views on the current state of thermal management for PCBs, and what the industry can do to put the spotlight on what’s hot in PCBs.

Mike Jouppi Discusses his Drive for Better Thermal Data

If you mention thermal management in a group of PCB designers and design engineers, Mike Jouppi’s name usually pops up. Mike is an engineer and founder of the Thermal Management LLC consulting firm. He spent years updating IPC’s charts on current-carrying capacity, which had been unchanged since the 1950s. I recently caught up with Mike and asked him to give us his views on the state of thermal management, as well as the tools and standards related to thermal design.

Streamlining Thermal Design of PCBs

When designing a PCB, thermal issues are often locked in at the point of selecting and laying out the chip package for the board. After that, only remedial actions are possible if the components are running too hot. Assumptions made about the uniformity of the airflow in these early design stages can mean a disaster for the commercial viability of a PCB if those assumptions are incorrect. A different approach is needed to improve reliability and to optimize board performance. Dr. John Parry of Mentor explains.

IEEE’s Romanian SIITME Show a Success

The 23rd annual IEEE International Symposium for Design and Technology in Electronic Packaging (SIITME) was held in Constanta, Romania, in October 2017. It attracted more than 190 participants from Romania, and 13 other counties. While there might be some who question the suitability of Romania as a venue for such a conference, the country has a long technological history and has produced some top innovators and pioneers in aviation including Aurel Vlaicu, Traian Vuia, Henri Coanda, who prototyped an early jet aircraft in 1910.

That’s Hot: Ventec’s Goodwin on Thermal Management

IPC’s fall committee meetings were held in conjunction with SMTA International, as has been the case for several years now. Patty Goldman sat in on some subcommittee meetings, including one on laminates, where she met up with Ventec COO Mark Goodwin for a discussion on thermal management from a laminate supplier’s perspective.

Tips & Tricks: Rule-Based PCB Layout

You’ll need to refer to your fab house, both to ensure that they can build what you need, and to get the final say on their design rules. Some fab houses even have downloadable design rules for various CAD packages. That makes setting things up a lot easier.

Mentor White Paper: Characteristic vs. Instantaneous Impedance

Successful signal integrity analysis depends on a fundamental concept: impedance. Without a thorough understanding of the impedance values that a signal encounters along the way, designers cannot maintain good signal quality from source to receiver.

The Impact of HDI on PCB Power Distribution

A key aspect of HDI technology is the use of microvias. For reference, the IPC HDI Design Committee has identified microvias as any hole equal to or less than 150 microns. Multiple types of HDI stack-ups associated with blind and buried microvias can be used to meet the density and cost requirements for today’s products. Design teams should develop stack-ups in conjunction with the fabricator to minimize cost and meet signal integrity requirements.

Heat Transfer and Thermal Conductivity: The Facts

In my first two columns, I presented a broad introduction to the subject of thermal management of electronic circuits. This month I’m taking a closer look at thermal interface materials—how they can be applied to achieve efficient heat transfer, and the significance of bulk thermal conductivity in relation to heat transfer and thermal resistance.