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New Equipment | Industrial Automation
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Electronics Forum | Mon Jun 25 03:52:24 EDT 2012 | awtm
Our Customer had detected tarnished pad on ImAg PCBA and had conducted several SEM-EDX test at the soldermask below some of the chip resistors. High concentration of sulfur was found and it can be significantly reduced after further chemical cleaned
Electronics Forum | Mon Jun 25 11:33:20 EDT 2012 | davef
The immersion silver is an active surface and readily combines with sulfur from the environment. Silver sulfide tarnishes the surface and creates doubt about the integrity of the finish at inspection. [uyemura.com/library-4.htm] Your customer's boar
Industry News | 2022-03-25 08:07:42.0
Easily monitor process fluids in real time with LiquiSonic®
SMTnet Express, March 17, 2022, Subscribers: 25,805, Companies: 11,547, Users: 27,113 Creep Corrosion On Lead-Free Printed Circuit Boards In High Sulfur Environments The material and process changes required to eliminate lead from
Surface Mount Technology Association (SMTA) | https://www.smta.org/knowledge/journal.cfm
. Hofmann, I. Schubert, D. Wünsch, R. Ecke, K. Vogel, K. Gottfried, D. Reuter, M. Rennau, S.E. Schulz, T. Geßner Abstract 30-1 On the Corrosion Mechanisms of Common Printed Circuit Board Surface Finishes in Three Different Sulfur-Rich Environments Matthew D. Weeks, Ph.D., David J
