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January 1997

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Subject:
Re: Gold as Etch Resist
From:
[log in to unmask]
Date:
Wed, 29 Jan 97 15:38:48 PST
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So, if you use the Ni/Au as an etch resist, what protects the trace edges 
corrosion?  Do you plan to plate it twice or strip the gold?  I think 
the photo resist is cheaper.

Chuck Brummer, Acuson.


______________________________ Reply Separator _________________________________
Subject: Gold as Etch Resist
Author:  [log in to unmask] at ccUnix
Date:    1/29/97 3:35 PM


     Hello,
        Please post information, experiences, and anecdotes, on using 
     electroplated gold as an etch resist. In particular how is the etch 
     rate controlled. How can the undercut be reduced to eliminate the 
     chance of slivers.
        (Gold/Nickel/Copper/FR4 :The copper gets etched)
     Thanks
     Rich


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