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| From [log in to unmask] Sat Apr 27 14: |
36:20 1996 |
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We are having trouble soldering organic protective coated bare copper
boards. The difficulty is occurring with manual iron soldering in the
post wave/wash shop.
The boards soldered fine in SMT, and then they were washed. They then
sat several weeks awaiting finalization of engineering changes and
receipt of the EC parts. Now we are having extreme difficulty getting
the solder to wet to the copper in the postmount shop.
Does anyone have suggestions to overcome this problem? Would it be
feasible to recoat the bare copper when it's determined the boards
cannot be completed immediately? Does anyone have a suggested time
limit in which to complete soldering after the wash? Does anyone know
of aggressive flux cored solder wire which can promote wetting and
still meet Bellcore specifications?
Any advice would be appreciated.
Allen Ahlert
[log in to unmask]
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