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Subject:	Re: Definition of Supported/ unsupported hole
From:	Leo Lambert <[log in to unmask]>
Reply To:	[log in to unmask]
Date:	Wed, 26 Jun 2002 14:12:12 -0400
Content-Type:	text/plain
Parts/Attachments:	text/plain (57 lines)

Hello Peter, a supported hole is a plated through hole and an unsupported
hole does not have any plating in the hole, mostly found on single sided
board or from secondary drilling operations.

Hope this helps,

Regards,

Leo Lambert
EPTAC Corp

-----Original Message-----
From: TechNet [mailto:[log in to unmask]]On Behalf Of Peter Lee
Sent: Tuesday, June 25, 2002 3:22 PM
To: [log in to unmask]
Subject: [TN] Definition of Suported/ unsupported hole


Technet,

Can anyone explain the difference between a supported
and unsupported hole on PCB?

I am reading a section on IPC-A-600 RevF and section
2.10.3/4 specify difference acceptance criteria
according to the hole type.

Rgds,
Peter

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