Plated half-holes are predominantly used for board-on-board connections.

E.g. the combination of complex microcontroler modules with common, individually designed PCBs.

The board-on-board PCBs therefore need plated half-holes, which serve as SMD connection pads. Through directly connecting the PCBs together, the whole system is considerably thinner than a comparable connection with multi-pin connectors.

Minimum half- hole size : 0.50MM

Minimum hole gap (edge to edge) : 0.60MM

Minimum rate of Half-hole size/pcb thickness : 1:8