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March 1999

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Subject:
Etchant for Copper Assuming Sn/Pb Resist
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Date:
Tue, 9 Mar 1999 15:11:10 -0600
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From: Dennis J Fall@TFT on 03/09/99 03:11 PM


To:   [log in to unmask]
cc:
Subject:  Etchant for Copper Assuming Sn/Pb Resist

Where (if anywhere) can I get an etching chemistry that will remove
approximately 1000-3000 angstroms of copper, but will not harm
electroplated Sn/Pb?  If possible, I would also like to remove 1000-3000
angstroms of Nickel-Chromium that is under the copper at the same time I
remove the copper.  I will greatly appreciate any help.


Thank You

Dennis Fall                        P: 507-625-8445 x17

Engineer                           F: 507-625-3523

Thin Film Technology Corporation

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