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Subject:	Re: Hole diameter specification
From:	Susy Webb <[log in to unmask]>
Reply To:	(Designers Council Forum)
Date:	Mon, 28 Aug 2006 09:12:54 -0500
Content-Type:	text/plain
Parts/Attachments:	text/plain (37 lines)

The information you are looking for is in IPC-2222. Look in section 9.2.2 "Plated Through Holes".
Susy
>
> From: "Tempea, Ioan" <[log in to unmask]>
> Date: 2006/08/28 Mon AM 08:19:11 CDT
> To: [log in to unmask]
> Subject: [DC] Hole diameter specification
>
> Hi,
>
> I have a TH cap that has 0.064" diameter pins and 0.089" diameter holes. Are the holes properly designed?
>
> I have skimmed IPC-2221 and IPC-D-279, but cannot find any formula for calculating the diameter of the hole from the pin diameter. Where can I find such formula?
>
> Thanks,
>
> Ioan
>
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