gurus, I need some education: Immersion process what I know of is surface
ionic exchange process, once it covered surface, the chemistry stops, so
it is a self limiting process.  What is thin and thick?  you means it can
really gets thicker like electroless type?  not self limiting?  Many
thanks.
Best regards,
                           jk
> From memory the "thin" and "thick" silver finish classes recognised that
> there were two competing but roughly equally popular IAg chemistries in
> the industry , each with their own process max-min deposit thicknesses and
> one typically thicker than the other.
>
> Clearly it didn't make sense for an IPC spec to have a "barn door" range
> from minimum "thin" to maximum "thick", hence two ranges defined. I don't
> recall one being "better" than the other because of the thickness
>


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