PSN-L Email List Message

Subject: Re: soldering pad tips...
From: "Charles R. Patton" charles.r.patton@........
Date: Fri, 08 Feb 2002 09:33:01 -0800

Bob Shannon wrote:
"So I heated the solder to see what had happened....Guess what? NO

My guess is that the dime went into solution.  Dimes were silver which
is very soluble in lead/tin (solder.)  This is why there are solder
alloys with  1 to 2 % silver available for electronics, primarily SMT
components which used to commonly use silver terminations, in order to
avoid dissolving the termination when the component was soldered on.

Charles R. Patton

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