There is such a thing as "roll tin", which is used mostly on single-sided 
boards.  It is a molten solder that is applied by a conveyorized roller 
system.  Talk to someone who makes single-sided boards, such as Kalmus or 
Photocircuits.  (See your Membership Directory for more listings in the 
back.)  Again, the vias are an unknown.

Patty
 ----------
From: TechNet-request
To: technet
Cc: rwo
Subject: Re: FAB: Electroless Tin
Date: Wednesday, November 06, 1996 11:12AM

     Why not electroplate the tin on one side, & then mask off & do the
     nickel gold electroless/immersion?  As was already said, though,
     you'll have to watch what happens with the vias.


     Matt Byrne

______________________________ Reply Separator
_________________________________
Subject: FAB: Electroless Tin
Author:  [log in to unmask] at SMTPLINK-HADCO
Date:    11/5/96 05:00 PM


I have a customer who wants Tin on one side of his circuit
and Ni-Gold on the other.  The only way I can figure
out to do this is to use an electroless Tin.  Does anyone
know of a vendor who will do electroless tin plating?

Rich Orr
Lucent Technologies

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