Mail Archives: geda-user/2015/07/22/07:22:00
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There is now a collection of footprints on gedasymbols.org based on the
vertical, horizontal, and screw terminals discussed above in the thread.
i.e.
http://www.gedasymbols.org/user/erich_heinzle/kicad/footprints/w_conn_screw.mod/mstba_2_5_3-g-5_08.fp
This appears to be 200 mil spaced, i.e. 5.08mm pitch, which I think is what
was needed.
The gedasymbols index may take a little while to update, but the directory
can be browsed int he meantime.
Thanks of course to Walter Lain, the GPL/CC-SA Kicad library author, from
which the PCB footprints were converted.
Cheers,
Erich.
On Wed, Jul 22, 2015 at 7:54 PM, Sabin Iacob (iacobs AT m0n5t3r DOT info) [via
geda-user AT delorie DOT com] <geda-user AT delorie DOT com> wrote:
> On 07/22/2015 05:47 AM, DJ Delorie wrote:
> >> But what about the polarity?
> > I think I use a hacked 0603 footprint for mine, which has a polarity
> > indicator, but I usually end up looking at the schematics to determine
> > which way to put LEDs on. Even then, it's hard to figure out which
> > pin is which on the LED itself. However, that's the type of LED eval
> > boards use.
>
>
> SOD323 is about the same size as 0603 and has polarity; in my footprint
> collection I have 2 variants, one with smaller pads (downloaded from
> somewhere, possibly John Luciani's site)[1] and the one in pcblib-newlib
> with larger pads and a slightly larger outline, but the distance between
> pads is exactly the same as for 0603
>
> The one with smaller pads makes it easier to route a trace between them,
> and might help getting a compact board when designing for automated
> assembly, thile the other one should be easier to hand solder.
>
> [1] http://luciani.org/geda/pcb/footprints-gif/Diode-gif.html
>
>
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<div dir=3D"ltr">There is now a collection of footprints on <a href=3D"http=
://gedasymbols.org">gedasymbols.org</a> based on the vertical, horizontal, =
and screw terminals discussed above in the thread. <br><div class=3D"gmail_=
extra"><br>i.e. <br><a href=3D"http://www.gedasymbols.org/user/erich_heinzl=
e/kicad/footprints/w_conn_screw.mod/mstba_2_5_3-g-5_08.fp">http://www.gedas=
ymbols.org/user/erich_heinzle/kicad/footprints/w_conn_screw.mod/mstba_2_5_3=
-g-5_08.fp</a><br><br></div><div class=3D"gmail_extra">This appears to be 2=
00 mil spaced, i.e. 5.08mm pitch, which I think is what was needed.<br><br>=
</div><div class=3D"gmail_extra">The gedasymbols index may take a little wh=
ile to update, but the directory can be browsed int he meantime.<br></div><=
div class=3D"gmail_extra"><br></div><div class=3D"gmail_extra">Thanks of co=
urse to Walter Lain, the GPL/CC-SA Kicad library author, from which the PCB=
footprints were converted.<br><br></div><div class=3D"gmail_extra">Cheers,=
<br><br></div><div class=3D"gmail_extra">Erich.<br></div><div class=3D"gmai=
l_extra"><br><div class=3D"gmail_quote">On Wed, Jul 22, 2015 at 7:54 PM, Sa=
bin Iacob (<a href=3D"mailto:iacobs AT m0n5t3r DOT info">iacobs AT m0n5t3r DOT info</a>) =
[via <a href=3D"mailto:geda-user AT delorie DOT com">geda-user AT delorie DOT com</a>] <s=
pan dir=3D"ltr"><<a href=3D"mailto:geda-user AT delorie DOT com" target=3D"_bla=
nk">geda-user AT delorie DOT com</a>></span> wrote:<br><blockquote class=3D"gma=
il_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,2=
04,204);padding-left:1ex"><span class=3D"">On 07/22/2015 05:47 AM, DJ Delor=
ie wrote:<br>
>> But what about the polarity?<br>
> I think I use a hacked 0603 footprint for mine, which has a polarity<b=
r>
> indicator, but I usually end up looking at the schematics to determine=
<br>
> which way to put LEDs on.=C2=A0 Even then, it's hard to figure out=
which<br>
> pin is which on the LED itself.=C2=A0 However, that's the type of =
LED eval<br>
> boards use.<br>
<br>
<br>
</span>SOD323 is about the same size as 0603 and has polarity; in my footpr=
int<br>
collection I have 2 variants, one with smaller pads (downloaded from<br>
somewhere, possibly John Luciani's site)[1] and the one in pcblib-newli=
b<br>
with larger pads and a slightly larger outline, but the distance between<br=
>
pads is exactly the same as for 0603<br>
<br>
The one with smaller pads makes it easier to route a trace between them,<br=
>
and might help getting a compact board when designing for automated<br>
assembly, thile the other one should be easier to hand solder.<br>
<br>
[1] <a href=3D"http://luciani.org/geda/pcb/footprints-gif/Diode-gif.html" r=
el=3D"noreferrer" target=3D"_blank">http://luciani.org/geda/pcb/footprints-=
gif/Diode-gif.html</a><br>
<br>
</blockquote></div><br></div></div>
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