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September 1999

DesignerCouncil@IPC.ORG
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Subject:
Re: Unsupported holes?
From:
Jim Bauer <[log in to unmask]>
Reply To:
DesignerCouncil E-Mail Forum.
Date:
Wed, 22 Sep 1999 07:36:47 -0500
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Per IPC-T-50    Terms and Definitions
Supported Hole -  A hole in a printed board that has its surfaces plated or
otherwise reinforced.
Unsupported Hole - A hole in a printed board that does not contain plating or
other type of conductive reinforcement.

Hope this helps,
Jim

Mark Holmes wrote:

> Hello all,
>
> With respect to IPC-2221 table 9-2, what is meant by a 'supported' or
> 'unsupported' hole?
> Does this mean plated or non-plated? I haven't come across this term before.
>
> Regards,
>
> Mark.

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