It is too dangerous to do this (using cyanide).
I think, it would be better to check if the higher thickness of gold plating (on
fingers?) can have an insertion problem. Higher gold thickness does not affect
reliability (solderability), it is good for customer but bad for the supplier
due to price of gold.
If you are trying to remove 1 microns, you can not be sure that the etching is
uniform throughout.

hope it helps





"Y.H. Woo" <[log in to unmask]> on 03/15/2000 07:28:41 AM

Please respond to "TechNet E-Mail Forum." <[log in to unmask]>; Please respond to
      [log in to unmask]

To:   [log in to unmask]
cc:    (bcc: Jonathan A Noquil/Cebu/Fairchild)
Subject:  [TN]


ȸ½Å: [TN] Gold Removal






You could remove extra gold with 1% KCN(Potassium Cyanide) Solution.
It would take about 1 minute to remove 1um gold .
But be careful !!
Hope any help to you.

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