Electronics Forum: problem with conformal coat 1b31 (31)

conformal coating - masking problem with ammonia

Electronics Forum | Tue May 12 06:44:16 EDT 2009 | jhk71

We do a conformal coating for a customer with copper-nickel-gold pads on his board. The pads are masked prior to coating with a standard gel, containing ammonia. After thousands of boards, being processed like this, now the gold pads seem to be less

conformal coating - masking problem with ammonia

Electronics Forum | Mon May 18 08:34:08 EDT 2009 | davef

It's happened perviously. If that happens, there is a widespread solderabily issue, not just on selected pads.

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. Is there anything in the IPC-A-610 or the J-STD-001 that allows the conformal coat not to adhere to Teflon wire? Read Answer Problems with Component Tombstone on Flex Circuit Question


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