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Date: | Mon, 14 Apr 2008 22:04:19 -0400 |
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Hi Gilbert,
Is ot possible to get the actual spectra and the conditions they were collected at?
Regards,
Vladimir
----- Original Message -----
From: TechNet <[log in to unmask]>
To: [log in to unmask] <[log in to unmask]>
Sent: Mon Apr 14 21:47:34 2008
Subject: [TN] Non wetting problem
Dear All.
Hope you had a nice weekend.
I got a call from my customer that my PCB has non wetting problem, and I
received 2 defect samples
I saw the contaminated gold plated surface @ 1st sample, no abnormal surface
and defects were found @ other sample.
I understand the contaminated gold surface was able to make non wetting
problem, but Another sample, I couldn't find anything on surface.
We did FE-SEM / EDX analysis.
Results: 1st sample: Br, Au, C, O, Au
2nd sample C, O, Au Ion were detected
.
I wonder why Br was detected?, do you have any idea for defection of Br on
Gold plated surface?.
For 2nd sample, I have no idea, I could not understand the mechanism for non
wetting problem without any abnormal gold plated surface.
If have idea & possible, would you share your great wisdom to me?
Best Regards / Gilbert Min
Tel.: 82- (0) 11-9242-5340
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