 
| Subject: | |
| From: | |
| Reply To: | Larry W. Burgess |
| Date: | Wed, 26 Apr 2000 12:38:14 -0700 |
| Content-Type: | text/plain |
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Ivan,
One method is to use a laser for this Soldermask removal. I have done it several time recently for smaller areas where we used a mask made from thin core copper.
Larry
----- Original Message -----
From: Ivan Barrios <[log in to unmask]>
To: <[log in to unmask]>
Sent: Wednesday, April 26, 2000 12:14
Subject: [TN] Removal of Solder mask
> We need to remove a small area (0.120" x 0.100") of soldermask from the top
> layer, without removing any of the copper underneath. Is there a chemical
> used to "etch" out this soldermask, and not compromise the copper layer
> underneath? As always, your responses are most welcome
>
> Ivan Barrios
>
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