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Date: | Mon, 4 Jan 2010 11:41:19 +0000 |
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For a rectangular pin just take the diagonal as in the diagram figure 9-3 in IPC-2222.
James
James Head BEng CID MIIE MIET
Senior PCB CAD Engineer
Crowcon Detection Systems Limited
2 Blacklands Way
Abingdon Business Park
ABINGDON
OX14 1DY
Telephone: +44 (0) 1235 557700 extension (9) 289
Fax: 07092024504
Email: [log in to unmask]
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Richard Morrison
Sent: 04 January 2010 11:24
To: [log in to unmask]
Subject: [TN] Through hole dimensions for rectangular tags
Hi,
I have been seeking to try and standardise our through hole diameters in
relation to the pins/battery tag size and in line with IPC recommendations. I
have come across figures in IPC-2222 which outlines these sizes. However...
These are only for round pin in round plated through hole. We are using
battery tags of rectangular dimension 0.15x0.75mm. Taking the recommended
dims for the round pin and applying it to our tag will mean that there is a
greater volume of solder in the through hole.
Does anyone know if there is a standard refering to this scenario?
Should the through hole be made rectangular/oblong to accommodate this tag
shape?
Any information would be much appreciated
Regards
Richard
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