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Re: gEDA-user: Broken TO92 footprint
On Thu, 19 May 2011 14:25:50 -0700
Colin D Bennett <colin@xxxxxxxxxxx> wrote:
> On Thu, 19 May 2011 14:02:58 -0400
> Vanessa Ezekowitz <vanessaezekowitz@xxxxxxxxx> wrote:
>
> > The discussion about "reinventing the wheel" reminded me:
> >
> > The TO92 footprint included with PCB does not work with the schematic
> > importer therein. Try to reference it and the importer complains
> > about missing pins, because it uses numbered pins instead of the
> > B-C-E lettering used in gschem's transistor symbols. Copy and edit
> > the footprint to use those letters and the importer complains about
> > pin numbers ending in letters.
>
> Isn't a word of caution in order, since not all TO-92 transistors use
> the same order of B/C/E pins? Or is the one you've provided the
> standard now?
Indeed you're right that caution is advised. The one I provided just duplicates the pin numbering/ordering found in the original footprint; the cheapest transistors these days seem to use exactly the opposite pinout.
--
"There are some things in life worth obsessing over. ÂMost
things aren't, and when you learn that, life improves."
http://digitalaudioconcepts.com
Vanessa Ezekowitz <vanessaezekowitz@xxxxxxxxx>
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