I need help placing vias under pads on a BGA

[ryanW2YZ6]

I am trying to place vias underneath the pads of a BGA. I don't believe the vias will fit between the pads since the pitch of the BGA is 0.40. Is there some sort of clearance that needs to be adjusted. 

[jorge_garcia]

Hello @ryanW2YZ6 ,

Often whenever vias in pads are needed you need to setup micro-vias in the design preferences > Layer Stack manager. Make sure to look at what your manufacturers specifications are, when working with BGAs it's important to make sure you conform to what your board manufacturer specifies in order to make sure the board is manufacturable. Once the DRC is fully setup you'll get a real idea of what size vias and micro-vias you can use.

Let me know if there's anything else I can do for you.

Best Regards,