OK, can anyone confirm this theory:
Au over Cu means the Cu can diffuse into the Au
Cu-Au alloy is very brittle
Therefore I am seeing a very brittle FPC...?
If this is the case, would a Ni barrier layer solve the problem?
I am sure someone out there can answer this one and has been there, done
that, got the T Shirt...
(Mr Engelmaier usually has good answers to these types of questions...)
Neil
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