Hi,
> Hi, (I am just back from holidays...) ;-)
>
> Sure, I use this solution too, if my need is coaxial.
>
> But for some new device packages (ex. power package DPAK) you have to
> depose solder past on specific (and reduced) area while to have a big
> copper pad for thermal reasons. In this case I appreciate the
> possibility to edit Solder past layer and Mask layer.
Yes, our components assembler has told us to make four little pads instead of
a big one in a QFN component. We have numbered these pads all zero. And we
connect them with tracks as wide as the pad.
> I not find that too heavy while this job have to be made at package
> creation, the only annoyance is the difficulty to select a pad
> embedded on another.
I agree with you. But I needed a solution for the whole pcb.
Saluti,
Pedro.
>
> Regards,
>
> Danilo Uccelli
>
>
> 2006/7/18, Pedro Martin wrote :
> > Hi Danilo and all,
> >
> > Since your trick worked but it is hard for professional design, I wrote
> > direrctly to Jean-Pierre.
> >
> > In "tracks and vias/Mask clearance (retrait masque)" we can choose the
> > distance beetween the pad and the solder mask for all pads of the pcb.
> > It is a great feature!
> >
> > Regards,
> >
> > Pedro.
>
>
> > 2006/7/10, Pedro Martin wrote :
> > > Hi all,
> > >
> > > When I create a footprint pad, how can I define its solder mask?
> > > I have assumed that solder paste mask fits the pad area.
> > >
> > > I have had a problem: in components with very closed pads, pcbnew does
> > > not fill with solder the space between the pads.
> > >
> > > Pedro
>
> --
>
> > > 2006/7/10, Danilo Uccelli wrote :
> > > > Hi Pedro,
> > > >
> > > > In the pad properties of module editor, you select on which layer you
want
> > > > work.
> > > >
> > > > If you need for example a big pad partially unmasked:
> > > >
> > > > 1) Edit your pad by unchecking the Solder mask component layer, so all
> > > > the pad become masked.
> > > > 2) Create a new pad without number and edit this one by checking only
> > > > the Solder mask component layer, adjust his position overlapping the
> > > > Component pad.
> > > >
> > > > You can do the same with others pads on Solder past layer only and so
on.
> > > >
> > > > Use a sufficient fine grid in order to be able to place the pads where
you
> > > > need.
> > > >
> > > > Some time it become difficult to re-select overlapped pads, in this
> > > > case I momentary move the first selected (the bigger one) in order to
> > > > be able to access the little.
> > > >
> > > > Danilo
>
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