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July 1997

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Subject:
Re: Solder compatibility
From:
[log in to unmask]
Date:
Thu, 10 Jul 97 10:15:53 cst
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     Hi Jamey -
     
     I would suggest using some Scanning Electron Microscopy analysis 
     techniques to determine what the final solder composition of the 
     solder joint is after going through the process. If you are quite a 
     bit off of the Sn63/Pb37 composition or have some really segregated 
     zones you may want to do some solder joint reliability testing to 
     insure that you will get the solder joint life you expect for your use 
     environment.
     
     
     
     Dave Hillman
     Rockwell Collins
     [log in to unmask]


______________________________ Reply Separator _________________________________
Subject: Solder compatibility
Author:  [log in to unmask] at ccmgw1
Date:    7/9/97 1:59 PM


     Fellow netters, what is your feel on mixing 63/37 tin-lead solder plating
with 96.5/3.5 silver-tin wave solder process?  How will the inner-metallic 
layers react?  This is a new one for me......
     
THANKS
Jamey
     
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