TechNetters,

What is the proper way to document a notch on the edge of a PWB?

I have an application where a connector requires two notches on the PWB edge.
How do I dimension these two notches for the PWB fabricator, which are
essentially a half circle from the edge of the PWB, with the edge being the
circle diameter (2x radius) and the penetration into the PWB being the
circle radius?
Is it a note on the fab drawing with dimension data, a hole chart entry,
something else??
How should it be documented in the Gerbers, as clearences and spacings must
be maintained
to remain in compliance with PWB edge specifications?

What do designers do and fabricators prefer to see as documentation for
this situation??
Any suggestions appreciated.

Regards.......DT

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