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Some of our panels are gold plated. We use our normal production paste
and/or wave soldering process.
Shiny joints do not imply good reliability relative to dull joints.
Look at the microstructure. I have not had any failures attributed to
this come back from the field.
The only difficulty I had was with top side fill on the solder
machine.
______________________________ Reply Separator _________________________________
Subject: ASSY: Gold-to-Gold Soldering
Author: [log in to unmask] at internet
Date: 9/30/96 6:21 PM
Does anyone have experience soldering gold-plated SMT components to
gold-plated PCB's using a eutectic (Sn63/Pb37) solder? The solder
joints exhibit a dull, grainy appearance. Although I know that longer
liquidus dwell times and a maximum reflow temperature of 220 C are
typically recommended when soldering to gold, will other solder
alloys perform better (i.e,, Indium alloys)?
Thanks in advance,
Greg Kilinski
Acuson Corp.
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