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Signal Integrity & Metallization
Signal integrity and additive manufacturing, particularly metallization, are hot topics in PCB design and fabrication. PCB layouts are carefully engineered to achieve specific electrical and power performance targets.
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What happens when the rule book is no longer useful, or worse, was never written in the first place? In today’s fast-moving electronics landscape, we’re increasingly asked to design and build what has no precedent, no proven path, and no tidy checklist to follow. This is where “Design for Invention” begins.
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From the growing role of AI in design tools to the challenge of managing cumulative tolerances, these articles in this issue examine the technical details, design choices, and manufacturing considerations that determine whether a board works as intended.
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American Standard Circuits Launches Fusion Bonding for RF Boards
September 17, 2018 | American Standard CircuitsEstimated reading time: 2 minutes
American Standard Circuits is now offering fusion bonding of PTFE-based materials. PTFE material fusion bonding uses high temperature (≥700°F/371°C) to bond PTFE directly to the copper circuitry and surrounding PTFE. This achieves bonding of the core materials without the use of a separate bonding agent acting as a bond ply or pre-preg.
With fusion bonding, you achieve an entirely isotropic package for stripline circuitry. This may be done utilizing either a PTFE core with copper removed or with a special uncompressed PTFE ply which acts as a filler/bond ply but consists of the same base material as the rest of the PTFE cores within the package. It is this uniformity and the reduction or elimination of DK variation within the package that allows the unparalleled performance and design accuracy.
When discussing the introduction of fusion bonding, President and CEO Anaya Vardya said, “Over the past several years we have expended a great deal of time, money and man power to assume a leadership role in the RF microwave market. The development of fusion bonding technology represents another step towards providing our customers with a complete RF microwave solution. Our team here at American Standard Circuits has done a great job in helping us to gain the technological capability to attain our market leadership position.”
As a leader in RF technology, American Standard Circuits has authored the micro eBook “The Printed Circuit Board Designer’s Guide to….Fundamentals of RF/Microwave PCBs". Download it here.
About American Standard Circuits
American Standard Circuits (ASC) prides itself on being a total solutions provider, manufacturing quality rigid, metal-backed, RF/microwave, flex, and rigid-flex PCBs for the medical, automotive, industrial, defense, and aerospace markets in volumes from test and prototypes to large production orders. ASC has the expertise to provide a wide variety of technologies in a time-critical environment. Their qualifications include AS9100 Rev D, ISO 9001:2015, MIL-PRF 31032, MIL-PRF-55110, MIL-PRF-50884 certification and ITAR registration. In addition to manufacturing in the USA, ASC can transition and manage your PCB requirements to lower cost regions via its qualified supply chain of offshore partners. ASC also holds many key patents for metal bonding processes. For more information about American Standard Circuits' services or to ask one of their technology experts a question click here.
Visit I-007eBooks to download your copies of American Standard Circuits’ micro eBooks today:
The Printed Circuit Board Designer’s Guide… to Fundamentals of RF/ Microwave PCBs
The Printed Circuit Designer's Guide to... Flex and Rigid-Flex Fundamentals
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Brent Fischthal - Koh YoungSuggested Items
I-Connect007 Releases The Printed Circuit Designer’s Guide to… Direct Metallization: A Guide to Complex PCB Fabrication
05/15/2026 | I-Connect007As PCB complexity continues to accelerate, fabricators and OEMs are reevaluating long-standing manufacturing processes to meet the demands of AI, HDI, advanced packaging, and next-generation electronics. To address these evolving challenges, I-Connect007 is proud to announce the release of The Printed Circuit Designer’s Guide to… Direct Metallization: A Guide to Complex PCB Fabrication, authored by MacDermid Alpha Solution’s Carmichael Gugliotti.
Driving Innovation: Selecting the Right Laser Source
04/28/2026 | Simon Khesin -- Column: Driving InnovationWhen I first joined Schmoll Maschinen, I brought experience from almost every PCB process, except for laser. As I immersed myself in laser processing, I realized why it can seem so daunting to a newcomer. The complexity arises from three intersecting factors: A vast variety of laser sources: CO2, UV-nano, green-pico, UV-pico, IR-pico, and others; a diverse range of applications: Drilling, cutting, ablation, and more; and an extensive list of materials: These have vastly different absorption rates. Choosing the right machine or laser source is rarely trivial. Even for experienced engineers, answering "Which source is best?" requires examining the business's specific goals.
Institute of Circuit Technology Spring Seminar 2026: A Bright Future in Europe
04/23/2026 | Pete Starkey, I-Connect007Through the leafy lanes and spring flowers of Warwickshire and back to Meridan, the traditional centre of England, and now officially part of the Metropolitan Borough of Solihull in the county of the West Midlands, I attended the Annual General Meeting and Spring Seminar of the Institute of Circuit Technology (ICT) on April 14. Out of the AGM came notable changes in leadership at the top of the Institute: the retirement of Mat Beadel as chair and Emma Hudson as technical director. Effective May 1, Steve Driver is the new chair, and Alun Morgan is the new technical director.
ACCM Unveils Negative and Near-zero CTE Materials for Large-Format AI Chips
04/21/2026 | Advanced Chip and Circuit MaterialsAdvanced Chip and Circuit Materials, Inc. (ACCM) has launched two new materials: Celeritas HM50, with a negative coefficient of thermal expansion (CTE) of -8 ppm/°C to offset the positive CTE and expansion of copper with temperature on circuit boards, and Celeritas HM001, with near-zero CTE and the low-loss performance needed for high-speed signal layers to 224 Gb/s and faster in artificial intelligence (AI) circuits.
Fresh PCB Concepts: Designing PCBs for Harsh Environments—Reliability Is Engineered Upstream
04/23/2026 | Team NCAB -- Column: Fresh PCB ConceptsWhen engineers hear the phrase “harsh environment,” they usually think of the extreme temperature swings, vibration and shock, pressure changes, or radiation in aerospace. However, aerospace is not the only harsh environment where electronic assemblies must survive. Automotive power electronics, downhole oil and gas tools, marine controls, rail systems, defense platforms, and industrial automation equipment all expose PCBs to environments that are equally unforgiving. The stress mechanisms may differ, but the physics does not.