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| From [log in to unmask] Wed Jan 31 10: |
18:39 1996 |
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contact your local pcb chemistry rep's for samples of the first part of
their two part solder strippers. they typically leave the copper/tin
intermetallics behind. don't know what to expect with gold.
______________________________ Reply Separator _________________________________
Subject: Sn-Pb etch
Author: [log in to unmask] at corp
Date: 1/24/96 10:58 AM
Can anyone recommend a method to completely remove the 63-37 solder from a
surface, leaving the underlying intermetallics untouched? I have tried
hydrochloric acid; it works for solder reflowed on Cu, but in joints with
gold it apparently re-precipitates gold artifacts. Any help would be
greatly appreciated.
Edwin Bradley
Motorola
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