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March 1998

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Mon, 2 Mar 1998 17:28:40 -0800
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     The gold over nickel will be better by far... Oxidation of the
     tin/lead will be much greater than you will see on any gold surface.
     Our experiments with these showed the greatest difference in a
     temperature and humidity environment for a length of time.

     Steve O'Hara
     HP


______________________________ Reply Separator _________________________________
Subject: [TN] corrosivity HASL v GOLD
Author:  Non-HP-evanj ([log in to unmask]) at HP-Vancouver,mimegw10
Date:    2/26/98 9:18 PM


One of our Engineers has asked me to pass on a question. How does the corrosion
resistance of  Electroless gold over Nickel (gold thickness of around  7
microinch) compare to horizontal HASL? The target environment is a marine type
environment (salt spray). The customer does not wish to conformally coat the
end product. If anyone has any experience or data in this area I would be most
grateful.

Regards Evan

Evan Jones
Manufacturing Engineer
Bluegum Technology
Ph 61 3 5720 2539       Fax 61 3 5720 2412
Email [log in to unmask]

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