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November 1998

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Subject:
Pattern Copper Plating
From:
Francis Lai <[log in to unmask]>
Reply To:
[log in to unmask]
Date:
Sun, 15 Nov 1998 16:52:55 -0500
Content-Type:
text/plain
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text/plain (34 lines) 
1/ Our acid copper plating bath has only one power supply. The front and

   back anodes are connected to one terminal and the cathode is connected

   to the other terminal. There are 3 front anodes and 3 back anodes.

2/ We have to do a pattern plating. The front side is about 3/5 of the area

   of the back to be plated. We want to plate about 350 u in. of copper.

   The fronnt side has a 3 mil line and tolerance is +/- 0.5 mil.

   The back is the ground plane pattern.

4/ Could anyone advise how can we do it with the conditions given?

my e-mail : [log in to unmask]

Thanks a lot in advance!!!!!!!

Francis

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