Latest Articles

IPC APEX EXPO: Clyde Coombs Discusses the New Printed Circuits Handbook

In this interview that was shot during the IPC APEX EXPO 2016 in Las Vegas, Nevada, Clyde Coombs discusses the latest edition of the Printed Circuits Handbook, which was published this week. The seventh edition, co-edited with Happy Holden, includes new sections on supply chain management and PCB design, with a chapter on EDA tools by Design007 Editor Andy Shaughnessy.

IPC APEX EXPO: Glenn Oliver on His IPC 'Best Paper' on High-Frequency Materials

Glenn Oliver of DuPont discusses his award-winning paper, “Round Robin of High-Frequency Test Methods by IPC-D24C Task Group." Co-authors include Jonathan Weldon of DuPont, John Andresakis of Park Electrochemical, Chudy Nwachukwu of Isola, John Coonrod of Rogers Corporation, David L. Wynants of Taconic Advanced Dielectric Division, and Don DeGroot of Connected Community Networks. The paper looks at high-frequency offerings from a variety of materials providers.

Mark Thompson: It’s All About Communication

In engineering support at Prototron Circuits, Mark Thompson has seen it all. He ensures that each design is manufactured the way the designer intended, even if the CAD data is not crystal clear. During DesignCon, Barry Matties and Andy Shaughnessy talked with Thompson about why communication is paramount when designing and prototyping boards. Thompson also explained how designers can avoid making common mistakes that can set back an entire project.

Mentor Graphics’ Oren Manor Explains Exactly What Industry 4.0 Brings to Manufacturing

Oren Manor of Mentor Graphics talks about what Industry 4.0 is really about, and how it benefits electronics manufacturers. He also discusses their design to manufacture solution, and how it helps OEMs large and small make the transition to Industry 4.0 without a complete factory overhaul.

Manufacturing Institutes Can Boost the Nation

In his most recent State of the Union address, President Obama highlighted a remarkable trend of recent years: the turnaround in many corners of America’s manufacturing sector. Nearly 900,000 new jobs have been created by U.S. manufacturers in the last six years.

Beyond Design: Faster than a Speeding Bullet

In optical communications, electrons don’t carry the signal—photons do. And we all know that photons travel at the speed of light. So surely, optical fibers must transmit information much faster than copper wires or traces on a multilayer PCB? Actually, photons and electrons transmit data at the same speed. The limiting factor is the relative permittivity (dielectric constant) of the medium in which the signal propagates.

Technology Outlook with Mentor Graphics

Mentor Graphics recently announced the winners of its PCB Technology Leadership Awards. Now in its 26th year, this program provides a great barometer for measuring the newest trends in cutting-edge PCB designs. I caught up with Product Marketing Manager David Wiens and asked him to give us an idea of the trends he’s seeing in PCB design and manufacturing, and what the industry has in store for us in the next few years.

Designers Notebook: Flexible and Rigid-Flex Circuit Design Principles, Part 3

This installment of "Designers Notebook" will focus on methods for specifying base materials, and also address copper foil variations and fabrication documentation. It is important to research the various products in order to choose the one that best meets the design requirements.

Catching up With Tom Hausherr of PCB Libraries

When fate placed Tom Hausherr and I at PCB West, we made sure to carve out some time together. Tom agreed to have a long breakfast with me so I could learn more about the challenges related to component libraries and how his company addresses these issues. So, pull up a chair and join us for a chat.

DuPont, Taconic and PFC Team Up For High-Speed Flex

At DesignCon, I sat down with three flex circuit specialists: Glenn Oliver of DuPont, Tom McCarthy of Taconic, and Steve Kelly of PFC Flexible Circuits. Our discussion covered a lot of territory, most notably the findings they described in the paper they were about to present later that day at DesignCon, and the future of flex, as they see it.

Enhancing Thermal Performance of CSP Integrated Circuits

In order to meet size and weight requirements, constraints of portable electronic designs often force PCB designers to reduce the size of components and PCB real estate area. To meet these demands, the use of CSP packages to shrink the PCB area needed is a common change in designs. As a result of the reduction of total PCB area, the available options to move heat and route high-power PCB traces is also reduced. Furthermore, the thermal performance cannot be matched when a QFN is compared to an equivalent CSP package.

The Shaughnessy Report: Doing My Part for Medical Electronics

One interesting aspect of having hernia surgery recently was the number of PCBs in the operating room. I’ve never seen so many electronic devices together in my life. I saw one Agilent monitor, and a bunch of others with names I couldn’t make out. It reminded me of the IT room in most companies. I guess they had to be set up to handle routine surgery like mine, and the not-so-routine operations as well. Medical electronics is doing fine, no doubt.

Designers Notebook: Flex and Rigid-Flex Circuit Design Principles, Part 2

In this installment of "Designers Notebook," Vern Solberg discusses supplier assessment, planning of the flexible circuit outline, and various circuit routing principles. Communication between designer and fabricator is paramount, as well as an understanding of IPC-2223, which sets the specific requirements for the design of flex circuits.

Justifying the Need to Outsource Design Work

Mehul Dave and H.D. Shreenivasa of Entelechy Global discuss the many benefits of outsourcing and why it should not be thought of as a four-letter word. They also talk about the huge gap between design and manufacturing, and how their company can help customers address that issue.

American Standard Circuits: Leading the Way in Medical Electronics

When it comes to innovative fabricators, American Standard Circuits is always at the front of the pack. Naturally, when Editor Andy Shaughnessy asked me to interview a fabricator about PCBs for the medical market, ASC was the one company that immediately came to mind. I spoke with CEO Anaya Vardya about fabricating medical PCBs, the medical electronics market, and the future of this fast-growing segment.

Fabrication Drawings and Electrical Test— Reading the Fine Print

When a new PCB design is born, designers envision what the product will provide when completed. Whether the product is for the consumer, aerospace, military, medical or countless other markets, the designers—or more likely, the customers—expect certain deliverables on the commodity they wish to purchase.

Innovative Circuits Sees Healthy Medical Market

Medical electronics is one of the fastest growing segments of our industry. Alpharetta, Georgia-based Innovative Circuits is at the forefront of fabricating medical PCBs, both flex and rigid. I asked Innovative Business Development Manager Amir Davoud to give us a solid diagnosis of the world of medical PCBs.

Beyond Design: Plane Crazy, Part 2

In my recent four-part series on stackup planning, I described the best configurations for various stackup requirements. But I did not have the opportunity to delve into the use of planar capacitance to reduce AC impedance at frequencies above 1GHz, which is the region wherein bypass and decoupling capacitors dramatically lose their impact. In this column, I will flesh out this topic, and consider the effects of plane resonance on the power distribution network (PDN).

New Year, New Outlook for the Electronics Manufacturing Industry

As an advocate for the electronics manufacturing industry, my job is to educate and encourage policymakers to create a favorable legislative and regulatory environment for advanced manufacturing to grow and succeed. From that perspective, I think we should be proud of the significant progress we made in several areas in 2015.

Medical PCB Design: Not Just Another High-Rel Board

Some of the coolest new electronic products have come courtesy of the medical market. I wanted to find out more about this fast-growing segment, so I contacted Kenneth MacCallum, an engineering physicist with StarFish Medical. MacCallum, an engineering physicist who designs PCBs for medical applications, explained why medical PCBs are not quite like other high-reliability boards.

Happy’s Essential Skills: The Need for Total Quality Control (Six Sigma and Statistical Tools), Part 2

The statistical representation of Six Sigma describes quantitatively how a process is performing. To achieve Six Sigma, a process must not produce more than 3.4 defects per million opportunities. A Six Sigma defect is defined as anything outside of customer specifications. A Six Sigma opportunity is then the total quantity of chances for a defect.

Systematic Estimation of Worst-Case PDN Noise: Target Impedance and Rogue Waves

In the dark ages of power distribution design, the typical advice was to use a bulk capacitor and one 0.1uF bypass capacitor for every power pin on the digital circuit. This was very unscientific, but served the industry reasonably well in low-density and low-speed circuits. As the designs got more demanding, the target impedance concept was developed. Using a target impedance, designers had a metric and a design goal to guarantee that the voltage transients stay within specified limits.

Designers Notebook: Flex and Rigid-Flex Circuit Design Principles, Part 1

In his new Designers Notebook column, Verb Solberg discusses primary flex circuit structures, proper design for operating environment, and base material selection. The design guidelines for flexible circuits, although similar to those for rigid circuits, have distinctive differences that are influenced by specific applications and the intended operating use environments. Communication with your fabricator is paramount when designing flex and rigid-flex circuits.

IPC Designers Council Viewpoint: Gary Ferrari

As co-founder and longtime executive director of the Designers Council, Gary Ferrari has dedicated a big part of his career to PCB design. After decades of service, he was inducted into the IPC Hall of Fame at IPC APEX EXPO this year. I caught up with Gary and asked him to fill us in on the creation of the Designers Council, and some of the changes he’s seen in the last 24 years.

Lightning Speed Laminates: Why Do Different Test Methods Yield Different Electrical Values?

A variety of different test methods may be used for any one electrical concern. This article will discuss the issues related to determining the dielectric constant (Dk) and dissipation factor (Df or Tan-Delta). On a data sheet, a designer may see a Dk value for a material to be 3.5, as an example. Once the designer buys the material and performs necessary evaluations, it may be found that the Dk of the material is 3.8. In some applications this difference in Dk is probably not meaningful; however, for many RF and high-speed digital applications, this difference could be very significant.

IPC Designers Council Viewpoint: Mike Creeden

When covering the IPC Designers Council, one quickly learns that it’s the volunteers who make the train run on time. San Diego PCB CEO Mike Creeden, CID+, is one such volunteer, and as a member of the Designers Council’s Executive Board, he was a must-have for this issue. I tracked him down and asked him to give us a rundown of his involvement with the DC, and to explain why designers might want to get involved with their local DC chapters.

Electrical Design Challenges for Automotive PCBs

A recent article in this magazine by Monica Andrei of Continental Automotive Systems emphasized the systemic nature of an automobile and discussed the characteristics and adoption of software design tools to enable such system-level design. Recognizing that electrical challenges are part of the automotive system-level discussion, this article will present more detail on signal integrity. Future discussion is planned regarding EMI, power integrity, and thermal integrity.

Happy’s Essential Skills: The Need for Total Quality Control (Six Sigma and Statistical Tools): Part 1

In this first of many columns covering my "Twenty-Five Essential Skills Every Engineer Needs to Learn," I will expand on each of those skills. To read the introduction to this series, which published in the January issue of The PCB Magazine. As a quick recap, here are the 25 skills that I will be writing about over the next 18 months or so, to publish every three weeks or so in the PCB007 Daily Newsletter.

McCurdy: How to Build a Successful IPC Designers Council Chapter

When Scott McCurdy made his transition from PCB fabrication to a PCB layout focus about 13 years ago, he accepted an invitation to attend our local IPC Designer’s Council. Shortly after, he was recruited to serve on the group’s steering committee. At that time, 20–25 people were regularly attending the meetings. When the chapter president moved, he asked Scott to take his place. Now, Orange County chapter meetings often draw close to 100 attendees.

IPC Designers Council: Serving PCB Designers for Almost 25 Years

You may have seen Anne Marie Mulvihill at the Design Forum during IPC APEX EXPO, rounding up speakers with a sarcastic comment or two. As PCB design program manager for IPC, Anne Marie makes the design train run on time. When I told Anne Marie that we were covering the Designers Council for this issue, she jumped at the chance to help us.

Beyond Design: Plane Crazy, Part 1

A high-speed digital power distribution network (PDN) must provide a low inductance, low impedance path between all ICs on the PCB that need to communicate. In order to reduce the inductance, we must also minimize the loop area enclosed by the current flow. Obviously, the most practical way to achieve this is to use power and ground planes in a multilayer stackup. In this two-part column, I will look at the alternatives to planes, why planes are used for high-speed design, and the best combination for your application.

Industry 4.0: Creating a Standard

Mentor Graphics Valor Division's Dan Hoz, general manager, and Ofer Lavi Ben David, product line director, discuss where Industry 4.0 is taking the industry, and the changes it will bring to both large and small companies, customers, and the supply chain, including how Mentor connects different machines on the shop floor to provide universal Industry 4.0 visibility.

IPC Designers Council Viewpoint: Rick Hartley

Rick Hartley has been in involved in PCB design and design education for decades, so it’s no surprise that he started working with the IPC Designers Council early on. Now retired from his day job at L-3, Rick still teaches PCB design and shows no sign of slowing down. I asked him to discuss his work with the Designers Council, and what the group means to the design community.

The Shaughnessy Report: Are You Drowning in Data?

Data management was so much simpler during the days of Mylar and Bishop Graphics tape. Data was handwritten. All you had to do was keep track of your paperwork and you were golden. Now, you’re all much more productive, but you have data coming out of your ears; slowly but surely, incrementally, data has become much more complicated. How do designers and engineers wind up managing all of this data? With kluged-together processes and software tools, and the occasional handwritten notes.

IPC: Connecting Electronics Industries

John Mitchell, president and CEO of IPC—Association Connecting Electronics Industries, provides the basic overview of the association—its goals and basic mission, activities, and how it best serves its membership. He also provides a snapshot of how IPC promotes technology development in the industry through standardization.

DownStream Takes on Data Documentation Management

Most designers will tell you that, as much as they enjoy laying out boards, they dislike the final data documentation step, which often involves various formats, including handwritten notes. Enter DownStream Technologies, a company founded 14 years ago to address the challenges related to post-processing the design. Senior Product Marketing Manager Mark Gallant recently discussed the company’s efforts to take the pain out of data documentation, even as data becomes more complex.

Mentor Graphics: The Past, Present and Future of Analytics

Farid Anani, consulting manager with Mentor Graphics' Valor Division, discusses with I-Connect007's Andy Shaughnessy a paper he presented at SMTAI that focused on analytics and how it can be used to increase business revenue. He also talks about how far analytics has come in the last 20 years and where it may be headed in the future.

The Key to Understanding Industry 4.0: Show, Don’t Tell!

At the recent productronica event in Germany, Mentor Graphics set up a racecar track in their booth. In an interview with I-Connect007, Michael Ford, senior marketing development manager at Mentor's Valor Division, explains why it's a perfect analogy for understanding Industry 4.0.

Why Autorouters Don’t Work: The Mindset!

Ask any group of PCB designers what they think of autorouters and the majority will say that they do not use them because they do not work. I have been battling this mindset for over 20 years now and it still persists today, even with the dramatic advances in routing technology. This way of thinking generally comes from those designers who use the entry-level tools. But even the most primitive autorouter may have some useful features. It’s all about changing that mindset of the designer and having a crack at it.

Rogers Scales up Production and Integrates Arlon Range

Editor Pete Starkey interviews Rogers European Sales Manager John Hendricks at productronica 2015. Hendricks updates us on Rogers’ acquisition of Arlon, and explains how the Arlon products are complementary to Rogers’ existing materials.

The Associations Issue

Well, it’s the end of the year. How did that happen? It really is true that every year goes by a little faster. You young whippersnappers out there won’t know what I’m talking about, but just you wait and see. We changed it up for our December issues this year. Instead of doing a year-end review, we decided to devote this month to our associations and trade organizations—at least some, because when you start poking around, you will find there are scads of them.

EMA: Helping Technologists Manage Disparate Data

Today’s EDA tools are better than ever, but managing design data, from schematics through Gerbers, can be an unwieldly task. I recently interviewed Manny Marcano, president and CEO of EMA Design Automation. He discusses EMA’s approach to managing a variety of types of complex data, the need for seamless data processes, and the future of compliance-aware design.

Honeywell Paper Investigates Avionics Vibration Durability

Dr. Joseph Juarez, principal mechanical engineer at Honeywell International, discusses with I-Connect007's Andy Shaughnessy his SMTA paper, which addresses avionics vibration durability between tin-lead and lead-free solder, the years of testing he conducted, the importance of doing a good soldering job, and some of the surprising findings of his research.

Pulsonix Poised to Take More EDA Market Share

Publisher Barry Matties met with Bob Williams, managing director and co-owner of Pulsonix, and Sales and Marketing Manager Tyrone Stephens to discuss the challenges facing the EDA tool market, and how they’re establishing this company in the global design tool marketplace.

SnapEDA: The Female-Owned Startup Revolutionizing CAD Data

SnapEDA founder Natasha Baker may mark the beginning of a new trend in EDA: young female entrepreneurs. (When was the last time we heard about an EDA startup?) As her company prepared for a major launch, Natasha took time to explain the philosophy behind SnapEDA, and how the company is helping designers and engineers manage an ever-increasing volume of CAD data.

Navigating the Global Materials Supply Chain: A Roundtable Discussion

At SMTAI recently, I-Connect007's Andy Shaughnessy sat down for a roundtable discussion with some key players from the materials side of the supply chain. Participants included two executives from Ventec: Mark Goodwin, COO USA and Europe for Ventec International Group; and Jack Pattie, president of Ventec USA. Also participating in the roundtable were Schoeller Electronics CEO Michael Keuthen and Bob Willis, from the National Physics Laboratory (NPL).

Good In, Good Out: Bay Area Circuits Discusses Data Strategies

A lot of companies talk about the importance of good data management, but for some firms, this amounts to little more than lip service. Then there are companies like fabricator Bay Area Circuits. I recently sat down with Bay Area Circuits President Stephen Garcia and COO Brian Paper to discuss how automating and upgrading their data systems has significantly cut down overall process time, as well as their drive to educate young PCB designers and actively promote the industry to the emerging electronics industry workforce.

The Gerber Guide, Chapter 3: The PCB Profile

The profile defines a simple region in the 2D plane. The proper way to do this is to specify a closed contour: The inside of the contour is the PCB, and the outside is not. It is that simple. Note that such a simple region is solid, without holes. By definition then, a profile cannot have holes intentionally placed within it. These are superfluous and represent an unnecessary and complicated duplication given that drill holes are well defined in the drill/rout file. One can view cut-outs in a PCB as still part of the PCB, just as much as the drill holes are.

Mentor’s Michael Ford on Lean for Surface Mount Processes

Michael Ford, senior marketing development manager with Mentor Graphics, Valor Division, discusses with I-Connect007's Andy Shaughnessy his paper presentation on lean systems in surface mount processes. He also talks about how the industry is now starting to look at Industry 4.0, and why the industry should stop focusing on the endless optimization processes, which are still important, but consider the optimization from the point of view of the product.

All About Flex: Flexible PCB: What’s in a Name?

Flexible PCB is a common term that is synonymous with flexible circuits. While the term “PCB” is generally used to describe rigid printed circuitry, “flexible PCB” is a little contradictory because “boards” aren’t really flexible. Some companies, like All Flex, design and manufactures flexible PCBs, but not rigid PCBs.

Orange County IPC Designers Council Meeting Draws Record Crowd

On November 18, the Orange County Chapter of the IPC Designers Council held a “Lunch ‘n’ Learn” event at the Harvard Park Community Center in Irvine, California. Eighty-nine PCB designers and electronics industry professionals gathered to listen to a talk by Chris Heard, a signal integrity engineering consultant at CSH Consulting LLC.

productronica 2015: Ucamco's Integr8tor Incorporates Polar Stack-up Functionality

Big extensions to the capabilities of the Integr8tor client-server work-flow system, way beyond the established CAM functions, now include full product definition covering all production stages of PCB manufacture, including flex and flex-rigid technologies. Integr8tor now incorporates all of the functionality of Polar Instruments’ stack-up design package, instantly accessible.

Beyond Design: Stackup Planning, Part 4

In this final part of the Stackup Planning series, I will look at 10-plus layer counts. The methodology I have set out in previous columns can be used to construct higher layer-count boards. In general, these boards contain more planes and therefore the issues associated with split power planes can usually be avoided. Also, 10-plus layers require very thin dielectrics in order to reduce the total board thickness. This naturally provides tight coupling between adjacent signal and plane layers reducing crosstalk and electromagnetic emissions.

Polar Instruments Fine-Tunes Layer Stackup Management

Polar Instruments CEO Martyn Gaudion and Technical Editor Pete Starkey discuss Polar’s efforts to simplify specification issues related to the supply chain. Designing PCBs with mixed materials makes layer stackup management more difficult than ever, but Gaudion explains how Polar works closely with materials providers and CAD tool vendors in order to provide users with constantly updated information.

Speeding up the Design Cycle: 10 Things to Remember

Many people understand the value of a PCB, but do not understand the best way to interact with PCB manufacturers. Poor planning and communication with fabricators slows down the design cycle and increases overall costs for your project. In this column, Mark Thompson streamline the design cycle through fabrication. Following my tips will minimize the need for future revisions and ensure you get quality boards on time.

Arlon’s John Wright Discusses New High-Performance Materials

During productronica, European Editor Pete Starkey interviewed Engineering/Quality Manager John Wright of Arlon. They discussed Arlon’s new 85HP ceramic-filled polyimide, as well as a non-woven aramid material, suitable for space applications, that is a drop-in replacement for a similar material discontinued by a competitor in 2006.

The SMT Internet of Things— Back to Basics

Different people have different understandings and expectations about what the Internet of Things (IoT) actually is, especially with respect to how it could work and what it could bring to the SMT assembly industry. There are a lot of expectations to fulfil as principles behind innovations such as Industry 4.0 take hold.

Lightning Speed Laminates: Impact of Final Plated Finish on PCB Loss

A variety of plated finishes are used in the PCB industry. Depending on the circuit construction and other variables, the plated finish can cause an increase in PCB insertion loss. The plated finish used on the outer ground planes of a stripline circuit have minimal or no impact on insertion loss. However, microstrip or grounded coplanar waveguide circuits, which are common on the outer layers of multilayer high-frequency PCBs, can be impacted by the plated finish for increasing the insertion loss.

Accelerating the PCB Design Cycle

An area of communications that is often underappreciated, but has become vitally important to design efficiency, is the dialogue with the PCB fabricator. It’s critical to engage the fabricator very early in the design process to nail down the proper materials and stack-up. With so many options for via structures, it is critical to select the most appropriate structure for the design. Adding blind and/or buried vias as an afterthought can limit their utilization and drive up the printed circuit board cost.

Accelerating the Design Cycle : Moving from Discipline-Centric to Product-Centric Design

Today, the design process in most cases fans out from the requirements as defined by marketing into multiple independent design threads that converge at the prototype. There is usually no systematic method for these different disciplines to communicate their work to the other disciplines. This lack of communication often leads to conflicting design decisions, such as when an electrical engineer or purchaser selects a component without having any way of knowing that it interferes with the enclosure. Extra design turns are often needed to resolve these conflicts at the prototype stage.
Subscribe | Magazines | RealTime with | JobConnect007 | Education | Webinars
Copyright © 2024 I-Connect007 | IPC Publishing Group Inc. All rights reserved. Log in