Please let me know what is the minimum via size and the minimum copper diameter around the via.
1) The minimum via size means the minimum diameter for the PTH (Plated Through Hole) or NPTH( Non-Plated Through Hole).
Normally, for MCPCB, the minimum diameter of PTH is 0.3mm, the NPTH is 0.25mm.
2) The meaning of the minimum copper diameter around the via is hole ring.
Normally, the minimum diameter of hole ring is 0.2mm.
