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March 2007

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TechNet <[log in to unmask]>
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TechNet E-Mail Forum <[log in to unmask]>, [log in to unmask]
Date:
Sat, 17 Mar 2007 20:06:10 +0800
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TechNet E-Mail Forum <[log in to unmask]>, "Tan, Geok Ang" <[log in to unmask]>
Subject:
"Greenish colour on traces"
From:
"Tan, Geok Ang" <[log in to unmask]>
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Hi all,
	One of my friends encountered :-
	The gold trace on the PCBA was tarnished with greenish color.
The trace is copper-silver-gold plated. 

I think the cause is due to overheating or the timing during the
temperature processing was taking too long. Any comment. Thanks!


Best Regards
Geok Ang

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