Lenny,
SN100 is a great finish as is ENIG you should not have issues working
the SN100 into your process it actually may be less fickle. 


James Hofer
General Manager
Accurate Circuit Engineering (ACE)
3019 S. Kilson Dr.
Santa Ana CA 92707-4202
[log in to unmask]
(714) 546-2162 wk
(714) 473-6127 cell

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Lenny Carter
Sent: Wednesday, June 24, 2009 5:13 AM
To: [log in to unmask]
Subject: [TN] ENIG and SN100 HASL compatability?

Fellow Technetters- We design, build and ship our own electronic assys
from one lean facility in the US.  3-4 years ago went ROHS like most
others, and we settled on ENIG pcb finish and havent looked back.  We
have a pcb manufacturer who wants us to try some SN100 finished ROHS
pcbs as an alternative to ENIG for the few pcbs we by from him.
I have some sample arrays to build on, but the assys are expensive and
figured I would first ask those of you who know-  Is SN100 HASL finish
common? and is it fairly interchangeable with ENIG from a paste and
component finish compatibility and process perspective?  Are others
readily building between SN100 & ENIG assys with little or no changes?
I understand this is a very subjective questions with many variables,
but I am posting this as a starting point.
Thanks, Lenny Carter

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