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| Date: | Fri, 18 Sep 2009 06:44:20 -0700 |
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Linda:
Actually, it is quite possible to get black immersion Tin. It comes from running a bath with an excess of Cupric Copper in it. I wrote a article on how to monitor Cupric Copper in immersion Tin baths to avoid this in a recent PCD&F magazine.
The black color should not affect solderability, as it is actually immersion Copper on top of the Tin.
Rudy Sedlak
RD Chemical Company
--- On Fri, 9/18/09, Linda Langley <[log in to unmask]> wrote:
From: Linda Langley <[log in to unmask]>
Subject: [TN] Black Pad
To: [log in to unmask]
Date: Friday, September 18, 2009, 3:12 AM
I know we have had this subject many times before so I did go to the
archives and still can't find an answer. My question, is Black Pad only
associated with ENIG? Is it possible with immersion Tin?
Linda Langley CIT
Training Specialist
Jabil Circuit
248-292-6176
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