The 770174-2 is a 4-position, 2-row, through-hole header from TE's Mini-Universal MATE-N-LOK series. It connects board to cable/wire — the male pins mate with a crimp-socket receptacle housing, making it a wire-to-board interconnect. The 4.14 mm pitch and row spacing set the PCB footprint; the 0.531 inch (13.50 mm) insulation height plus the 0.175 inch (4.45 mm) post length define the z-height budget above the board. The locking ramp fastening provides audible positive retention with the mating receptacle — it resists back-out in moderate vibration environments typical of industrial control panels and general-purpose equipment. This header is rated 600VAC with a current rating that varies by wire gauge — the actual current ceiling depends on the wire size and acceptable temperature rise.
The post finish is 150 µinch tin-lead, compatible with SnPb soldering processes.
RoHS compliance and sourcing posture
Peer comparison: 1318699-3
The 1318699-3 is a 12-position, 4-row header in the same Mini-Universal MATE-N-LOK family but with a 4.20 mm pitch (vs 4.14 mm), latch lock fastening (vs locking ramp), and a 5 A fixed current rating (vs gauge-dependent). It is black, rated 250VAC, and uses phosphor bronze contacts with only 3 µinch gold mating finish. The 770174-2 offers higher voltage rating (600VAC), thicker gold plating (30 µinch vs 3 µinch), and a more compact 4-position layout — but the 1318699-3 provides more circuits in a denser 4-row arrangement.