Hi,
We have a PCB witch has testpads(via's) with sizes less than 0,6mm. I measured some, they where at worst 0,43mm. It causes a lot of trouble.. What do you use as absolute testpad minimum?, and what measures are needed? And what experience do you have with it.
We have a PCB witch has testpads(via's) with sizes less than 0,6mm. I measured some, they where at worst 0,43mm. It causes a lot of trouble.. What do you use as absolute testpad minimum?, and what measures are needed? And what experience do you have with it.
once you get below 30thou you are facing some fixturing challenges - i suggest you speak with your fixture vendor to get recommendations on the design, I suggest ECT or Elite interfaces.
have you also thought about using bead probes?
0.6mm is REALLY small to hit reliably, 0.43mm - dont think so,