kicad-developers team mailing list archive

[Carl Poirier <carl.poirier.2@xxxxxxxxx>]

I think this is a very good idea. I will add this to our upcoming KiCad
library convention. Many transistors use letters already.

As for capacitors, why not also using C and A for cathode and anode?


On Fri, Apr 4, 2014 at 2:24 PM, jp charras <jp.charras@xxxxxxxxxx> wrote:

> Le 04/04/2014 20:02, Nick Østergaard a écrit :
> > 2014-04-04 19:24 GMT+02:00 Dick Hollenbeck <dick@xxxxxxxxxxx>:
> >>
> >>
> >> I am in the process of migrating my personal footprint an schematic
> part libraries to
> >> using A and C for pad/pin names.
> >>
> >> Away from 1 and 2.
> >>
> >> Other than the fact that I now have the burden of maintaining every
> footprint and
> >> schematic part object myself relating to all things diode, from now to
> eternity, is this a
> >> bad idea?
>
> Since a long time, I am using A and K (or C for you) for diodes, EBC for
> bipolar transistors and GSD for FETs.
>
> I suggest you to also use + and - for polarized capacitors.
>
> >
> > I might very well be a good idea -- same goes for transistors. But
> > what would you do with a BAT54S? This is a three pin package with two
> > diodes in series with a pin in between. One could still stick with
> > numbers for all those doubtfull packages, but that could seem
> > inconsisten to the user if we make this the new way in kicad.
>
> Pins are in this case A, C and AC for the common anode-cathode pin
> For double diodes, you could use A1, A2 and C, or C1, C2 and A
>
> >
> >> It's now impossible for the zenor, tvs, diode, or whatever to get
> placed on the board
> >> incorrectly with this, is my thinking. (Assumes the footprint
> silkscreen is idiot proof
> >> with clear Cathode demarcation.)
>
> I agree with Dick, it helps to avoid many mistakes when choosing a
> footprint.
>
> The main drawback is you need more footprints, but this is a very minor
> issue.
>
> >>
> >> Note also, that I frequently use the Eagle footprints to good effect,
> but I typically
> >> clone anything I'm using into my own libraries, with possible minor
> mods.
> >>
> >>
> >> Dick
>
> --
> Jean-Pierre CHARRAS
>
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