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April 1997

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Subject:
Ni/Au in NPTH
From:
[log in to unmask]
Date:
Fri, 18 Apr 1997 17:10:11 -0400 (EDT)
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Ususally the Ni/Au plating of NPTH is caused by residual catalyst left over
from the electroless process.
Given the correct conditions the holes usually do not plate up, but with DM
processes it can be very noticeable.
Atotech UK have devised a chemistry that will prevent this from happening,
but under the correct conditions of stabilised nickel there is ususally not a
problem.

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