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Mounting hole with vias to ground

I have been trying to design a mounting hole with vias around it which short the pin to GND.

So far, I've created a padstack of the main mounting hole and a via as a Thru-Pin element. I want to add the vias around the mounting holes but I've been getting DRC errors.

The final footprint is being created as a Package Symbol. How can I fix it?

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steve over 5 years ago

So you will ALWAYS see DRC errors in the Package Symbol because there is no nets. having said that you are seeing PP errors which are Pin to Pin not Pin to via, so Add vias using the Layout - Connections command then double click to add a via. Once this part is used in a board design it will have a net associated to it and the DRC's will not be shown. There is a example app note which should help:- www.parallel-systems.co.uk/.../Mechanical_Via_Arrays.pdf
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CadAce2K over 5 years ago in reply to steve

Also the vias showing 1, 4, 7, etc. imply these are 'electrical pins'. Hence you'll need to show these in the schematic. If that's what you intend, fine. But if you only want GND vias, per se, delete the pin numbers and manage the electrical connectivity in Allegro layout.
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CadAce2K over 5 years ago in reply to steve

Also the vias showing 1, 4, 7, etc. imply these are 'electrical pins'. Hence you'll need to show these in the schematic. If that's what you intend, fine. But if you only want GND vias, per se, delete the pin numbers and manage the electrical connectivity in Allegro layout.
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