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Ask the Experts Index |
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Apr 15, 2025 Adding Chlorine to a DI (Deionization) Water System We have had a recent issue of bacteria accumulation in our DI (Deionization) reservoir. In order to combat ... D.G. Apr 14, 2025 Exposed Copper Risk We received many PCB's where a modification have been completed. The modification involved soldering a chip cap to ... A.H. Apr 11, 2025 Hand Sanitizer Contamination Due to the COVID-19, the plant is wanting to use a sanitizer called Sani-Cide 94 which is a ... H.H. Apr 10, 2025 Spotting After DI Water Cleaning We have a close loop 3 Bed DI System fitted with a resistivity monitor. When the beds are ... B.D. Apr 8, 2025 Silver Solder for Audio Circuits We manufacture an audio product. We have been told to use silver solder for all solder connections. Can ... S.L. Apr 7, 2025 Oxidation of Solder Balls During Secondary Reflow Can solder balls oxidize and create opens during a second reflow if the circuit board assemblies were properly ... M.A, Apr 4, 2025 QFN Test Failures Caused by Flux We have a PCBA with a QFN44. We use a no-clean flux. We have encountered many test failures ... T.Y. Apr 3, 2025 Contamination From Anti-static Foam I have a vintage computer board that is contaminated with what appears to be decomposed anti-static foam. The ... J.G. Apr 2, 2025 Components Jumping Around During Reflow We reflowed a set of boards using a lead-free solder process and had issues with components jumping around ... M.D. Apr 1, 2025 Conformal Coating in Low Humidity Environments Whereas conformal coating is excellent for high humidity protection - is there any performance impact when subjected to ... B.L. |
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