The smallest finished hole available for 2 layer board is .020”.
The smallest finished hole available for 4+ layer board is .014”.
All holes are round and drilled through from top to bottom layer of board. No blind or buried vias.
For holes <= .070”: finished holes should be separated, hole edge to hole edge, by a minimum distance of .017” to prevent blowouts.
Blowout’ is a condition caused by holes being placed to close together. By trying to drill the holes too close together, it causes the drill bits to break during the drilling process.
We cannot guarantee Non-Plated holes will be completely free of plating. The resist on holes >= .150” may break down and allow plating into holes.
The largest finished hole size available is .250”.
When 1 oz Cu is selected, pads for holes should be .016 to .050 larger than the selected finished hole size.
When 2.5 oz Cu is selected pads for holes should be .028 to .062 larger than the selected finished hole size.