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April 2004

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Subject:
From:
Jeffrey Bush <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Tue, 6 Apr 2004 14:51:41 -0400
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The surface copper thickness shall not be less than 20% of the finished
minimum requirement.  This is basically for foil tolerance and
processing tolerances.  IPC-6012 Class 2 and 3.  Section 3.5 is
conductor definition.  Watch for impedance requirements, this could
affect the resulting performance.   


Jeffrey Bush
Director, Quality Assurance and Technical Support

                          76 Technology Drive - POB 1890
                             Brattleboro, Vermont 05302-1890
                                Tel. 802.257.4571.21 Fax. 802.257.0011
                                    [log in to unmask]
                              http://www.vtcircuits.com	



-----Original Message-----
From: Kristopher J. Keating [mailto:[log in to unmask]] 
Sent: Tuesday, April 06, 2004 2:18 PM
To: [log in to unmask]
Subject: Re: [TN] SNEC Mtg


 Hello,
Is there an IPC spec or some other industry standard for "surface bites"
or "dish downs"?  How big of a "bite" is acceptable?


Kristopher J. Keating

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