ENIG - yes, also immersion silver, immersion tin and OSP. Each have
advantages and drawbacks.

Regards
Ofer Cohen
Manager
Quality Assurance, Reliability and Production Technologies
Seabridge Ltd. - A Siemens Company
Siemens COM FN A SB 


-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Babcock John
Sent: Wednesday, November 16, 2005 02:29
To: [log in to unmask]
Subject: [TN] best plated surface finish

If somebody wants an extra smooth plating finish using lead free plating
what material would they use...and what would be the finishing process?
I've heard HASL is sort of rough...and it really doesn't apply using
silver solder because of the melting temps.
Is ENIG (electroless nickel immersion gold) the way to go to get a
smooth finish?
 
thanks!
 
John Babcock
PCB Designer III
Isothermal Systems Research (ISR)
2218 N. Molter Rd
Liberty Lake, WA 99019
[log in to unmask]
P: (509) 241-4641
F: (509) 444-1082
 
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