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May 1998

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Date:
Wed, 13 May 1998 10:01:38 -0700
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     What do you want to know??

     Raw Board Reliability (solderability)
     Contact Resistance Reliability?
     Solder Joint Reliability

     With regards to Solder Joint Reliability, the solder interface of the
     nickel to solder forms tin intermetallics which will not be as strong
     as solder to solder. These joints will still be acceptable for most
     smt components but immersion gold and BGA's should be avoided.

     Regards:

     Steve O'Hara  HP


______________________________ Reply Separator _________________________________
Subject: [TN] Reliability of Immersion Gold PCB
Author:  Non-HP-Fulton.Feng.ffeng ([log in to unmask]) at
HP-Vancouver,mimegw10
Date:    5/12/98 5:39 PM


Hi
Has anyboy done any reliability study on Gold Immersion PCB finish?

Thanks
Fulton Feng

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