I copied this from the website of a domestic supplier. 

General Gold Information:

Flash Gold:  Is hard gold with a maximum thickness of 3 micro inches.  We
can do this here but would require special handling.  Check with production
on a case by case basis.

I have heard of advances in process control for doing this. Large portions
of our boards require a normal thickness of electroplated gold.  We do
selective gold for locations that will be subject to soldering.  The ever
smaller packages, LGA, and flip chips that are appearing in our designs
demand thinner flash than we can provide. 

 

Can anyone give me leads to finding white papers on the topic? 

 

Guy

 



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