X-Authentication-Warning: delorie.com: mail set sender to geda-user-bounces using -f X-Recipient: geda-user AT delorie DOT com Message-ID: <4F9722A8.3040001@plastitar.com> Date: Tue, 24 Apr 2012 15:01:12 -0700 From: Phil Taylor User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:9.0) Gecko/20111222 Thunderbird/9.0.1 MIME-Version: 1.0 To: geda-user AT delorie DOT com Subject: Re: [geda-user] They don't call it experience for nothing!!! References: <20120424105131 DOT 51db48c8 AT svelte> <20120424183046 DOT 18509 DOT qmail AT stuge DOT se> <20120424121420 DOT 387e6746 AT svelte> <4F971BBF DOT 4000105 AT mcmahill DOT net> <201204242148 DOT q3OLmG0b016980 AT envy DOT delorie DOT com> In-Reply-To: <201204242148.q3OLmG0b016980@envy.delorie.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-HR-Scan-Signature: 7fc6f4d3d3862dd1dc0a34ff8218ca33 X-HR-ClamAV-Scan: Clear X-HR-SA-Score: 0.0 (/) X-HR-Status: Normal-(phil AT plastitar DOT com/66.147.237.116) Reply-To: geda-user AT delorie DOT com On 4/24/2012 2:48 PM, DJ Delorie wrote: > My solution is to have one symbols for each pin numbering, named by > the numbering. So I have a SOT23-12-345.sym and a SOT23-123-45.sym > for the two five-pin variants. This has worked well for me, too, but with a slight variation For three pin devices I have symbols like bjt_npn_ebc.sym, bjt_pnp_cbe.sym mos_n_gds.sym ... where the position of e, b, c, and g, s, d etc. are always in the order 1-2-3. In the footprints, I override all manufacturer pinouts and use my own standard 1-2-3 naming which is R-L for through-hole parts and the commonest pinouts for smts. (clockwise from above, with # always being the same). A few minutes in every design is put aside to glance at the datasheet with the schematic and PCB file both open for verification. So far I have not caught any errors working this way. Though I do remember doing things like rotating SMT's and mounting transistors upside down from my days of trusting someone else's library. Good luck, Phil