How to create this footprint

[Rene_Poschl]

Do you want copper on the edge? Not all fabs can do it the way you showed. Most fabs need a plated through hole at the edge that will get partly milled away. These are called Castellations.

Copper on the external part of the edges

Something like this? [image] Or more like this? [image] The word you’re looking for is ‘castellation’. Most fabs will do version 1 up there without any hesitation, just place the PTH on the edge and they will mill through it. Be aware that you need to have some more copper attached to the PTH to avoid the milling bit ripping the plated hole copper out of there. If won’t look pretty, but the residual burrs come easy off if this is just for prototypes. Even better if you got a multilayer bo…