The TE Connectivity 173924-1 is a 2-position, single-row header in the Universal MATE-N-LOK series, designed for board-to-board or cable-to-board interconnects. It carries a 6.35 mm pitch — wide enough to handle the 15 A per-circuit rating without crowding the board layout. The through-hole mounting accepts either press-fit or solder termination, giving the assembly line flexibility between reflow and backplane press-in processes. The housing is a glass-filled thermoplastic rated UL94 V-0, and the locking ramp provides positive retention against vibration.
Ratings and what they mean for the fit
The 15 A per-contact rating is the headline number, but the tin-on-tin contact finish (78.7 µin on the mating side, 20.0 µin on the post) governs the real duty cycle. Tin-plated contacts are suited for a moderate number of mating cycles — think a PSU harness that mates once at build and stays mated, not a field-service connector that sees frequent disconnect. The 500 VAC rating pairs with the 6.35 mm pitch to give enough creepage for that voltage without requiring a conformal-coated board. The locking ramp engages with the matching receptacle housing to prevent the pair from backing out under cable strain or machine vibration.
Termination and mounting
The header lists both press-fit and solder as termination options. The press-fit variant is the one that stands out — it lets you seat the header into a plated through-hole without a wave solder step, which is common in backplane or power-distribution boards where rework access is limited. The through-hole mounting with a 0.189" post length gives a solid mechanical anchor before the press-fit interference holds it. The 4-wall shrouding protects the male pins from being bent during handling or blind mating.
Sourcing and lifecycle
The 173924-1 carries an Active lifecycle status from TE Connectivity — no end-of-life notice, no last-time-buy clock. It is RoHS3 compliant.