I am facing some issues in defining and placing plated mounting hole in the design software.
The requirement is that all the plated mounting hole need to be attached to the board edge GND plane.
What I can do is I can easily place big GND via with M2.5 (appox 106 mil) hole diameter instead of “mounting holes”.
In manufacturing, is that a problem ? If there are no plated mounting holes but there are GND via touches the GND plane ?
It might depend on the layout tool that is being used. I have seen that done using Altium Designer although that is not my first choice on how to create plated mounting holes. Depending on the layout tool, the tool might assign differing characteristics/behaviors/rules to pads versus vias.
I prefer to use pads or component style footprint with a single pad. The preferred method depends on other variables that are more than just the physical structure and whether you want them to be displayed/wired in the schematic or not.
From a fabrication standpoint, fab shops cannot tell the difference between vias or pads which happen to have the same physical annular ring and hole sizes.
We define holes as being either plated or non-plated so this would just be a 106mil plated hole and included in the main drill program. Non-plated holes get drilled after all the plating is done using a separate program. No problem building it but might want to include an explanation in the Fab notes so we have a good understanding of what’s needed.