Hi Ingemar!
     
     If you are after your time then so are a whole bunch of the rest of 
     us! Yes, problems with solderability and reliability of having a gold 
     finish over a copper and/or copper alloy base metal without a barrier 
     to prevent diffusion issues is still a problem reported within the 
     electronics industry from time to time. Sometimes it appears we have 
     to "re-learn" certain lessons.
     
     
     Dave Hillman
     Rockwell Collins
     [log in to unmask]


______________________________ Reply Separator _________________________________
Subject: Koax plating
Author:  [log in to unmask] at ccmgw1
Date:    6/12/97 8:22 AM


Question: We have bought subminiature coax connectors for SMT. They have 
2um Gold over Brass (body) without Nickel barrier. I don't like the risk 
of Zn-leakage. Am I too oldfashioned? People put Tin directly on Kovar 
terminals etc. As I cannot handle roller blades, and has spent many 
years in a Quality Lab, I may be after my time....../Ingemar /EMW
     
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