You can HASL with any solder suitable for electronics. In general the
surface smoothness should be the same if done correctly. A tighter range is
possible with most lead free alloys.

-----Original Message-----
From: Babcock John [mailto:[log in to unmask]]
Sent: 10 November 2005 09:09 PM
To: [log in to unmask]
Subject: [TN] plating smoothness


Does anybody call out a specific smoothness finish ever on a fabrication dwg
for the HASL?  In these days of lead free, going forawrd, I am wondering if
silver will have the same smoothness finish as SN63/PB37 using HASL?

1)  Or can you HASL with silver?

2)  Does anyone have an example of a fab note for such a callout?  Or is
this getting too specific?

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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