We have sent a board to our off-shore vendor for fabrication.  The pcb
finish is spec'd as immersion gold with selective hard gold.  Our Chinese
vendor has come back asking if they can process as flash gold with selective
hard gold.



Correct me if I am wrong as I have seen "flash gold" and "immersion gold"
referenced as the same process but I believe that flash gold is an
electrolytic process is it not?  I am leaning towards approving this request
but is there anything I should be aware of or question before I do so?  Any
"gotchas"?  From what I have read "flash" gold can be process as either hard
or soft.  Can I assume that if they are going to use it to replace immersion
gold that the finish will be comparable for solderability?



John Parsons




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