In a message dated 6/27/00 5:41:04 PM US Eastern Standard Time,
[log in to unmask] writes:

<<
 Please forgive this basic question, but what would be the smallest
 lead-to-hole ratio in which you would attempt to auto-insert an axial part
 (with a Universal VCD 6287)?

 I'm fairly new in this arena, my focus has always been with SMT. But anyways,
 I've always heard that the holes should be .015"-.020" larger that the lead
 diameter. On Universal's web page they have a *.PDF through-hole design guide
 that says holes should be .019" +\- .003" larger than the lead. >>

Steve,
   Been there, tried that.  I would definitely stay above .015".  I found my
wave solder defect rate started to increase as I let the holes go above .032"
larger than the lead.

Jon  Moore

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