The header is loaded on all positions and mates with the matching BergStik receptacle or a shrouded housing for board-to-board or wire-to-board harnesses.
The post side carries a tin finish (39.4 µ" / 1.00 µm) for a reliable solder joint.
Termination is listed as both press-fit and solder — the through-hole pins can be wave-soldered or pressed into a plated-through hole sized for the 0.177" (4.50 mm) post length. The press-fit option is useful for solderless backplane assemblies where rework matters, but verify the PCB hole diameter against the pin cross-section before committing.
The 110 V rating is conservative for signal-level use; the real voltage headroom depends on creepage distance across the board surface between rows.