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July 2005

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Subject:
Re: Plating thickness
From:
"Smith, Donn" <[log in to unmask]>
Reply To:
(Designers Council Forum)
Date:
Wed, 13 Jul 2005 10:55:44 -0500
Content-Type:
text/plain
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text/plain (104 lines) 
Many thanks, Sherilyn and Greg!

Donn

> -----Original Message-----
> From: Sherilyn HARRISON [SMTP:[log in to unmask]]
> Sent: Wednesday, July 13, 2005 9:09 AM
> To:   [log in to unmask]
> Subject:      Re: [DC] Plating thickness
>
> Under the code ENIG
> Finish Electroless nickel  3 micrometers min  all 3 classes
> Finish Immersion gold  .05 micrometers min  all 3 classes
>
>
>
>
> -----Original Message-----
> From: DesignerCouncil [mailto:[log in to unmask]] On Behalf Of
> Smith, Donn
> Sent: Wednesday, 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 I find that my set of IPC-2220 has become outdated (specifically 2221).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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