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 <[email protected]> wrote: > Le 04/04/2014 20:02, Nick Østergaard a écrit : > > 2014-04-04 19:24 GMT+02:00 Dick Hollenbeck <[email protected]>: > >> > >> > >> 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 > > _______________________________________________ > Mailing list: https://launchpad.net/~kicad-developers > Post to : [email protected] > Unsubscribe : https://launchpad.net/~kicad-developers > More help : https://help.launchpad.net/ListHelp >
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