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Date: | Thu, 1 Sep 2005 10:03:20 -0400 |
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Anan
Have you performed an analysis of the residue such as a SEM/EDAX? If you do not have this equipment, you're the supplier of your plating chemistry probably does.
Best regards
Lee
J. Lee Parker, Ph.D.
JLP Consultants LLC
804 779 3389
----- Original Message -----
From: Anan Zreik<mailto:[log in to unmask]>
To: [log in to unmask]<mailto:[log in to unmask]>
Sent: Thursday, September 01, 2005 9:18 AM
Subject: [TN] chocolate plating
'
Hi every body :
every so often for a long period of time we get a "chocolate copper"
residue on the surface of our boards on our electrolytic copper plating
line . This "chocolate plating" can be removed by hand , and it is not
connected to the copper below .
does anybody know this phenomena , and its cause??
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