If Werner were alive he would be reminding us that silver, like gold, is a
contaminate in tin solder. 
Early finishes, prior to 2005 or so, weren't good for multiple reflows. Some
presumed it was too thin.
I believe the problem was the durability of the organic additives that
retard oxidation of the silver.
Not perfect, but it is my preferred surface finish, but not too thick.  

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Steven Kelly
Sent: Monday, August 10, 2015 3:47 PM
To: [log in to unmask]
Subject: [TN] immersion silver

Hi All,
Why would someone choose thick immersion silver over thin? Are these
different chemistries? Regards Steve Kelly


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