Al:
        Check IPC 2222  paragraph 9.2.2 and Table 9-3
        Regards,
        Ramon

> -----Original Message-----
> From: [log in to unmask] [SMTP:[log in to unmask]]
> Sent: Friday, May 16, 2003 10:50 AM
> To:   [log in to unmask]
> Subject:      [TN] Lead:Hole Ratio and Annular Ring Size
>
> Hello Technetters,
>
> I'm looking for industry specs (or just other technetters experience) on
> lead:hole ratio and annular ring (pad) size when using pth dc converters
> (Lucent, Tyco, Ericsson, etc.) that have lead diameters that are .040",
> .062", .080, and/or .180".
>
> Does the standard .015"-.017" lead:hole ratio still apply to these large
> leads?  And should the pad size increase linearly with the increase in
> lead
> diameter?
>
> Thanks in advance as always,
>
> See some of you at NEPCON East?
>
> Al Kreplick
> Sr. Manufacturing Engineer
> Teradyne, Inc.
> 500 Riverpark Drive
> Mail Stop NR500 1-1
> North Reading, MA 01864
> Tel:  978-370-1726
> Fax:  734-661-5352
> Pager:      888-561-6485
>
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