Kevin, 

Can't tell you where to look can only tell you what we have used for the
last 30 years.  0.010" over lead diameter for hand inserted parts and
0.014" over lead diameter for auto-inserted parts.  Actually, the
insertion machine manufacturers would prefer a couple of extra thousands
of an inch, but we seem to do fine at fourteen.

Gary Camac
Senior Mfg. Eng.
DICKEY-john Corp. 

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Kevin Glidden
Sent: Thursday, May 10, 2007 8:05 AM
To: [log in to unmask]
Subject: [TN] PTH sizing

Where does one look for basic guidelines on PTH sizing (with regard to
lead size, pcb thickness, & min-nom-max finished sizings) Thanks,
 
 
Kevin Glidden
Manufacturing Engineer
Luminescent Systems Inc.
 

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