The 0.156" (3.96 mm) pitch matches the standard MTA-156 header pin field — the first check when pairing the mating half. The orange housing carries a closed end and a polarizing key, so it only mates with a keyed header in the correct orientation; the closed end also blocks an over-length header from seating fully, preventing a partial mate.
IDC Termination — Wire Gauge and Cable Type
The IDC slot is sized for 18 AWG wire — not a range, a single gauge. The termination accepts either discrete wires or ribbon cable, which makes this receptacle a common choice for harnesses that transition from a ribbon cable to discrete leads at the board edge.