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Mounting holes with grounding

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  • Mounting holes with grounding

    Hello everyone.

    I'm curious about what is the best way to create mounting holes with grounding vias.

    There is no problem with creating a plated/non-plated mounting hole. It just needs to create a padstack and add it to the mechanical symbol and additionally Route Keepout and Package Keepout areas and it's done.

    My first approach to create a mounting hole with vias was by creating a mechanical mounting hole padstack with the diameter of 3.2 mm with such properties

    Drill hole typ - Circle
    Drill diameter - 3.2mm
    Hole/slot plating - plated

    Design layers - Begin/Default/End - 3.4 mm

    Then, I created a footprint as a package symbol. Around the footprint, I added an Etch layer on two sides (top and bottom) and 8 vias (0.4mm drill diameter, 0.8 mm layers)
    The maroon circle is a Package Keepout layer.

    Click image for larger version  Name:	mh3.PNG Views:	0 Size:	10.4 KB ID:	16890

    That's how it looks like right now.

    Even if add plated mounting hole, there is no connection between plating (1) and layers (2).
    Click image for larger version  Name:	layers.PNG Views:	0 Size:	77.0 KB ID:	16891

    How do you deal with creating such mounting holes? What is, in your opinion, the best way to create a proper mounting hole with grounding?

    I'm not going to use any paid tools which would do that for me.
    Last edited by marco_svizzeri; 03-08-2021, 11:57 PM.

  • #2
    Yes this is the best way to design the Mounting holes with Ground vias. It doesn't matter weather you use plated/non plated Holes. If you want to use these holes for GND or Shield, then use them as plated. Otherwise no need for plating.


    • #3
      This may also help: