I'm wondering if there is some rule of thumb about how close different BGA packages can be placed to each other. What limits that besides pick and place accuracy?
I'll ask a few board assembly places for their recommendation but I was wondering what the lowest common denominator recommendation is (similar to how 6 mil trace and space is a pretty standard thing most pcb manufacturers can do without adding extra cost).
Are there any similar rules of thumb about passives near a BGA? and anything on the opposite side of the board under a BGA?