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Fri, 28 May 2004 10:57:23 +0800 |
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Hi Tom;
Assuming this is the legend ink, Taiyo PSR-4000 is used for ENIG finish here. The Enig goes on first, then the legend, else discoloration occurs.
Is the finish gold?
Larry Russell
Consultant
Chant World Int'l
[log in to unmask]
http://www.chantworld.com
Tel No.: +886 3 452 5279
Fax No.: +886 3 452 0988
-----Original Message-----
From: Tom Burek [mailto:[log in to unmask]]
Sent: Friday, May 28, 2004 7:02 AM
To: [log in to unmask]
Subject: [TN] Purple Solder Mask
Greetings Technetters,
I have a circuit board that specifies Taiyo PSR-4000 white.
Some of the boards have a distinct purple tint to them.
Has anyone seen this phenomenon before?
Do you have any ideas what could cause it?
Thank you in advance.
Tom Burek, CID+
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