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Learning With Leo: Where Reliability Actually Hides

08/05/2026 | Leo Lambert -- Column: Learning With Leo
In my many years of training, it’s funny to see what still surprises people. For example, they’re surprised that by the time the solder melts, most of what decides whether that joint survives has already happened before the iron and even before inspection. In fact, it’s even earlier than that. In my column last month, I argued that most soldering problems are really problems of interpretation, which leads to the materials themselves, and where reliability is won or lost. So, let’s talk about what we’re actually soldering today.

Trouble in Your Tank: At 40 GHz, Everything Matters, Part 2

07/27/2026 | Michael Carano -- Column: Trouble in Your Tank
In Part 1 of this article, we examined alternative solderable finishes for 5G/6G applications and reviewed literature on their performance at high frequencies. We found that certain solderable finishes are more susceptible to signal loss as frequency increases. These attenuation losses become increasingly significant at frequencies approaching and exceeding 40 GHz. Because of their high conductivity, silver and copper generally outperform finishes such as nickel and palladium. Taken together, these findings underscore the importance of finish selection in high-frequency applications.

Remtec Announces the Industry's Most Complete Suite of Plating Capabilities Including PCTF Technology for Advanced Electronic Packaging

07/07/2026 | Remtec
Remtec, a leader in advanced metallized ceramic substrates and electronic packaging solutions, is proud to announce the availability of what is believed to be the industry's most comprehensive portfolio of plating surface finish technologies for thick film ceramic circuits and advanced electronic assemblies.

Trouble in Your Tank: At 40 GHz, Everything Matters, Part 1

07/07/2026 | Michael Carano -- Column: Trouble in Your Tank
The electronics industry supply chain is moving very quickly with the explosion of AI servers, high-performance computing, ADAS, quantum computing, and 5G/6G. Signal integrity is under scrutiny in an entirely new role. With many factors influencing signal integrity, one area that contributes to signal distortion at high frequencies is the PCB’s final finish layer deposits. Frequencies above 40 GHz are susceptible to such distortions, and data transfer rates of 224 GB/s are driving changes in PCBs and IC substrates.

Trouble in Your Tank: The Role of Organic Solderability Preservatives in Advanced Packaging

06/08/2026 | Michael Carano -- Column: Trouble in Your Tank
Technology trends shaping the electronics industry supply chain—AI, IoT, ADAS, and high-performance computing (HPC)—are driving finer circuit features and higher layer counts. Advanced packaging drives the selection of surface finishes depending on the application. Typical designs require excellent solder joint reliability and wire bondability. It is not uncommon for designers to specify the organic solderability preservatives (OSP) on the BGA side of the substrate and precious-metal-plated finishes on the top side, which facilitate wire bonding.
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