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Subject:	Exception to IPC-A-600 Class II minimum via wall plating
From:	Ashley Allen Shepard <[log in to unmask]>
Reply To:	TechNet E-Mail Forum.
Date:	Fri, 9 Mar 2001 08:49:29 -0600
Content-Type:	text/plain
Parts/Attachments:	text/plain (18 lines)

Hi All,

I'm wondering if anyone has data they'd be willing to share supporting the
18 micron minimum (class I and II) Final Finish, Surface Plating Coating
Requirements in the IPC-A-600 specification.  Specifically, I'm interested
in the effects of reducing via wall plating thickness. Any information
would be greatly appreciated.

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