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Throughhole near pcb edge, how close is too close.
683 1 Jun 10.2019, 16:36:25

Hey, i want to mount one pcb onto another at 90degrees using a typical 2.54 pitch right angle header.
The issue is that the holes need to be quite close to the edge on one of the boards and i'm not sure if they are too close to get manufactured.
Is there a rule of thumb or formula for how close a hole can be to the edge given its size?

The holes on my board will be 0.7 or 0.8mm and need to be 0.8mm from the board edge for the header to fit flush on the board.

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A****min

Jun 15.2019, 09:07:36

often small SMD carrier boards are manufactured with plated through holes that are then cut in half, to make a solderable carrier board, with
holes on the edges that are half-plated in a semi-circle now. 
Your board is likely going to be panelized, so there is plenty of extra board space at the edges of the panel , and they can drill and plate anywhere on your board.  
It will be cut out later.

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