Kenny 
From metallurgy you can solder that easily. The finish has mainly tin and the additional silver and copper coming into the SnPb when the SAC dissolves in the solder won't do any harm.

Best regards
Günter



_____________________________________________________

EMPA
Swiss Federal Laboratories  for Materials Testing and Research
Centre for Reliability
Guenter Grossmann,  Senior Engineer

8600 Duebendorf
Switzerland

Phone: xx41 44 823 4279
Fax :     xx41 1 823 4054
mail:     [log in to unmask]
_____________________________________________________

>>> "Bloomquist, Ken" <[log in to unmask]> 08/14/07 10:51 pm >>>
We are a Class 3 manufacturer and are looking at the different lead
finishes that can be soldered successfully with SnPb. One that we are
having a hard time finding information on is SAC lead finish soldered
with SnPb. I know that it's not good practice for BGA's but what about
SMT and through-hole parts?

Thanks in advance,

KennyB

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