kicad-developers team mailing list archive

["�vind Aabling" <Oyvind.Aabling@xxxxxxxx>]

On Tue, 26 Oct 2010, Alexandru Gagniuc wrote:

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> On 10/26/2010 08:29 AM, Michael Heidinger wrote:
> > Hello,
> >
> > i am advanced smd user. As SMD Packages are getting quite more
> > complex is adding these new cases the conventional module editor a
> > real challenge. Please have a look at a WDFN-8 Package.
> > Package drawing: http://www.onsemi.com/pub/Collateral/NTTFS4821N-D.PDF
> > If you take a look on page 6, the Drain-Part is a complex poligonal.
> >
> > My concret wish: A option "poligonal pads" for the module editor,
> > where I can draw this pads by hand. With this tool complex drawings,
> > like WDFN-8 cases can be possible. Can you please implement such a
> > feature in the module editor?
> >
> > Would be a great help!
> > Michael
> Michael,
>
> I like the idea, and it would work best with scripted generation of
> footprints.
>
> On a side note, you can fake these pads by overlapping several pads
> with the same pad number. It's the most elegant solution, but it
> generally works, and it's quicker than waiting for the feature.
>
> I'm looking at the datasheet right now, and the WDFN doesn't seem too
> hard to draw (actually, 6 rectangular pads would complete the drain).
> I'll ping Oyvind (he wrote awesome scripts to generate a ton of very
> useful footprints) to see if it can be added to his library (it's not
> in kicad yet, but I suspect it will make it by the next kicad release).

Part WDFN8-M065 added in rev 8, it's in oaa_smd_qfn.mod,
available at lp:~oyvind-aabling/kicad-newlib/mod :-)

It only took 4 extra lines of dimension tables and 6 new lines of
code, but I've just noticed that I forgot to add the thermal pad
to the 3D view :-( - I'll correct that in the next rev (will require
a few more lines of code, so this part will be way above average ...).

> Alex

Øyvind.