Letters may be useful for schematic to layout integration/interpretation, but some ATE equipment software packages do not like letters for pins, so check to see if your choice of pin nomenclature is acceptable to everyone "down the line." I learned this lesson the hard way earlier this year... some ATE programming types will convert letters to numbers, some won't unless you ask them to.
Roger
On a side note: Three cheers for IPC-7351!
-----Original Message-----
From: DesignerCouncil [mailto:[log in to unmask]]On Behalf Of
DUTTON Phil
Sent: Monday, October 25, 2004 7:40 PM
To: [log in to unmask]
Subject: Re: [DC] Pin Numbering Question
I think that you'll get a different answer from everyone on this one.
Personally I've found that the best thing for me is to create the library footprint to match the device.
If it's a diode I use A and K, transistor E,B,C, FET G,S,D. It saves any confusion, and helps in layout.
(yes, I have several SOT23 packages in my library...)
regards,
Phil Dutton C.I.D
Tenix ESD
-----Original Message-----
From: DesignerCouncil [mailto:[log in to unmask]]On Behalf Of
Brionez, Gregory
Sent: Tuesday, 26 October 2004 3:53 AM
To: [log in to unmask]
Subject: [DC] Pin Numbering Question
??? Survey Says
Do you use pin one of a Diode package to indicate...
1. The Anode
2. The Cathode.
Thanks
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