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Concentric Pads

Hi everybody,

I am currently trying to create a proper footprint for a screw-on Type K connector [datasheet]. In essence it comprises two pads: a small one for the signal in the middle, surrounded by a bigger, donut-shaped one for ground (plus two screw terminals which are of no importance to this question).

When I place these two pads in the footprint, I get a DRC error saying that these pads overlap event though the air gap between the pads is actually big enough. Is there a way to get this 'right', i.e. without creating DRC errors?

And is there a clean way to add some (say 5 or 6) top-to-bottom vias along the ground donut?

steve over 5 years ago

Try adding a drawing level property to the filename.dra (Edit - Properties the set the Find by Name dropdown to drawing) called NO_DRC_SYM_SAME_PIN. Then save. The DRC will still show in the symbol file but won't once it's placed in a board file. For the Vias use Layout connections then double click to add a via. You can set the via size up as you would normally through Constraint Manager, Physical rules). Use the Copy command in Polar mode to make the vias circular around the pad. Again there will be DRC's in the footprint but once this is used the vias will take on the same net name as the pad and you will be drc free.Take a look at this as an example:- orcad.co.uk/.../Mechanical_Via_Arrays.pdf
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moxmox over 5 years ago in reply to steve

I tried your tips and it worked like a charm. Thank you!
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