> -----Original Message----- > From: piclist-bounces@MIT.EDU On Behalf Of alan.b.pearce@stfc.ac.uk > Sent: Friday, July 15, 2011 4:20 AM >=20 > Name them with the JEDEC footprint name - the problem here is=20 > that the manufacturers often never reference the JEDEC=20 > footprint names in their documents, but sometimes you will=20 > see a 'corresponds to JEDEC xxxx' footnote on their package drawings. >=20 > e.g. your SOIC is an MS-012AA for an SO-8, through to=20 > MS-012AC for an SO-16, all 0.3" wide, MS-013xx for the 0.4"=20 > wide family (even though they also are known as SO-24 etc), and so on. >=20 > Once you get used to the JEDEC names they do work a lot=20 > better, least we have found that around here. I second the use of the JEDEC standard names, I had my employer switch to them a few years ago. IIRC, the standards are free to download from (free site registration required). For are some more JEDEC names for specific Microchip TQFPs: Microchip 64 lead, 14x14x1, 0.80 pitch =3D MSO-26AEB Microchip 80 lead, 14x14x1, 0.65 pitch =3D MSO-26AEC Microchip 64 lead, 10x10x1, 0.50 pitch =3D MSO-26ACD Microchip 80 lead, 12x12x1, 0.50 pitch =3D MSO-26ADD Paul Hutch --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .