I've never heard/read anything about uncured soldermask either. I've got a
pretty good *.PDF file authored by Nicholas Biunno of Hadco, and presented at
the '99 IPC Printed Circuits Expo that doesn't mention anything about
soldermask...is this something new?

-Steve Gregory-


> Bruce:
>
> My understanding of Black Pad was it is caused by too much phosphorus in
> the nickel (as I recall) plating bath.
> Solder mask contamination is a new one for me.
> With mask going on after the gold, how does it contaminate the nickel? Mask
> should not come in contact with the nickel at all in my experience
>
> I am interested in learning all nuances of black pad causation.
> Would appreciate your comments.
>
> Charlie McMahon
>



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