9 hours ago
Many CADs are this way.
You do not have to add non-electrical items to the sch, like MTHOLEs, fiducials, etc, but as long as they are footprints and therefore are components, when re-annotating the sch to the PCB, they may get deleted.
You could lock (freeze, glue - the terminology varies between CADs) them, but it all depends on a specific CAD. KiCad accepts holes both as drills/pads and board outlines patterns inside the main outline.
Cap's can should be OK as it still has an insulating film, which accounts for some dielectric strength and, together with air gap should do fine. The can in todays caps is not an electrode, but should not be ignored either. Especially if running hi-V traces under it.
You do not have to add non-electrical items to the sch, like MTHOLEs, fiducials, etc, but as long as they are footprints and therefore are components, when re-annotating the sch to the PCB, they may get deleted.
You could lock (freeze, glue - the terminology varies between CADs) them, but it all depends on a specific CAD. KiCad accepts holes both as drills/pads and board outlines patterns inside the main outline.
Cap's can should be OK as it still has an insulating film, which accounts for some dielectric strength and, together with air gap should do fine. The can in todays caps is not an electrode, but should not be ignored either. Especially if running hi-V traces under it.
People who do not drink, do not smoke, do not eat red meat will one day feel really stupid lying there and dying from nothing.
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