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1996

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Subject:
From:
[log in to unmask] (Jerry Cupples)
Date:
Mon, 2 Dec 1996 13:27:26 -0600
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Shaun Dalton asked:

>     Has anyone heard of problems with seating a tin/lead leaded part into
>     a gold socket?  I have heard concerns that the gold will migrate into
>     the tin/lead even though it is only a mechanical connection.  I would
>     appreciate any input you can give me on this issue.

Yes.

This is not a good practice. "Dissimilar metals" should not be used in
seperable electrical connectors. The result can be a cathode-anode
corrosion because tin and gold are far enough apart on the
electronegativity series to be a long range problem.

Wherever you heard concerns, they were right; not sure migration is the issue.

This is specifically prohibited by Bellcore and others. You would be better
off with a tin-lead socket for a tin-lead finished lead.

regards,


Jerry Cupples
Interphase Corporation
Dallas, TX USA
http://www.iphase.com

Jerry Cupples - [log in to unmask]
Interphase Corporation
13800 Senlac Dr.
Dallas TX 75234
(214) 654-5150
(214) 654-5500 FAX


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