Hi
My question is about galvanic action on panels being fabricated.
What I am seeing is that certain areas of panels are reacting
differently in certain processes. These pads are internally connected
to each other. The panel has the normal pattern plate and Ni/Au as
well.
The pads look different from the surrounding pads and etch at a
much higher rate in microetch. I would like to know how common this is
and what can be done to eliminate or at least bring it to an
acceptable level.
MikeDoty
P.E. Hadco TCE
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