Hi I want to design castellated holes on my very small PCB(13X10mm). There will be total 28 such holes with 14 on each side of PCB.
The pitch between holes is 0.55mm. So, we are bound to have 0.25mm diameter of these holes and pad size could be 0.3mm.
An example showing illustration(not actual PCB):
The approach would be to place rectangular pads(0.3x 1/1.5mm) with 0.25mm holes on the edge of PCB and let manufacturer cut these pads in half. Or any other inputs?
I am wondering if this small pitch would be problem or is pretty standard?