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        Tue, 20 Sep 2016 09:33:45 -0700 (PDT)
Date: Tue, 20 Sep 2016 18:33:39 +0200
From: "Nicklas Karlsson (nicklas DOT karlsson17 AT gmail DOT com) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
To: geda-user AT delorie DOT com
Subject: Re: [geda-user] pin number and pin sequence of diodes
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> Unless I am mistaken, the PINSEQ is reversed in many of the library
> diodes.
> 
> Spice requires the anode node followed by the cathode node, as
> determined by the PINSEQs, (these, I think, are reversed in many of
> the diodes in the library.)
> 
> Pcb routes on the pin number, (which are correct in most of the diodes
> in the library.)
> 
> So, if I want a spice simulation of a diode, PINSEQ=1 would be the
> anode, and PINSEQ=2 would be the cathode. I think this is the way
> gnetlist -g spice-sdb works.
> 
> If I want to layout the diode circuit, PINNUMBER=1 would be the
> cathode, and PINNUMBER=2 would be the anode, (and the PINLABEL would
> be K and A, respectively.) I think this is the way gsch2pcb works.
> 
> Am I right?
> 
>     Thanks,
> 
>     John
> 
> -- 
> 
> John Conover, conover AT rahul DOT net, http://www.johncon.com/

In gschem numbering have no particular meaning since it is a graphical representation of the circuit supposed to be read by a human. For layout footprints usually are simple numbers although characters may also be used A1,A2,A3,... and then there may be pin swapping and gate swapping. For spice I have no idea.


-- 
Nicklas Karlsson <nicklas DOT karlsson17 AT gmail DOT com>