Don,
IPC-2221A states on pg 21, Table 4-3 Final Finish, Surface Plating Coating
Thickness Requirements, the following;
Code Finish Class 1 thru 3
ENIG Electroless Nickel 3 um [118uin] (min)
Immersion Gold 0.05 um [1.97 uin] (min)
Regards, Greg.
Gregory E. Bordash
Advanced Bord Designs
Senior PCB Design Consultant C.I.D.+
phone: (905) 420-4195
cell: (416) 723-4195
fax: (905) 420-4195
email: [log in to unmask]
-----Original Message-----
From: DesignerCouncil [mailto:[log in to unmask]] On Behalf Of Smith,
Donn
Sent: July 13, 2005 9:35 AM
To: [log in to unmask]
Subject: [DC] Plating thickness
I find that my set of IPC-2220 has become outdated (specifically 2221). So
that I don't have to wait until I can requisition and receive my new set,
may I impose on someone who already has the new version?
Referencing the Feb 1998 version of that document, Table 4-3 Final Finish,
Surface Plating Requirements (page 20):
Electroless Nickel 2.5 - 5.0 micrometers (across all three classes)
Immersion Gold 0.08 - 0.23 micrometers (across all three classes)
Here's the question(s): Have either or both of those thicknesses changed in
the newer version (IPC-2221A)? If so, what are the new values?
Thanks very much (in advance)!
Donn
Donn Smith, CID
Senior PCB Designer
GARMIN International
1200 E. 151st Street
Olathe, KS 66062
(913)397-8200
(913)397-8282 Fax
[log in to unmask]
www.garmin.com
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