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Since starting to use aqueous cleaning with Armakleen E-2001A saponification
for removal of RMA flux, have experienced some problems with removal of PWB
silk sceen marking and one case where solder mask has came off traces on a
CCA. This case has soldermask over bare copper using a dry film mask. We
are a military environment and have multiple cleaning steps i.e., after SMT,
wave solder, and final assembly.
Have others experienced problems between solder mask coatings and aqueous
cleaning using saponification?
Thanks,
Jack Tippit
Wilcox Electric
tippit@ wilcox.com
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