The TE Connectivity 2-1971896-4 is a 4-position, single-row vertical header in the 1971896 series, designed for board-to-cable/wire power interconnects. It carries a 5.00 mm pitch, which gives generous creepage for the 250 VAC rating without forcing an oversized footprint — a practical balance for a 20 A power line. The silver-plated tab contacts handle 20 A per circuit, meaning each position is sized for a main DC rail or a power distribution node, not a signal line.
Construction and key features
The header is shrouded on all four sides (4-wall) with a latch holder for positive retention against the mating receptacle — the lock engages audibly and resists vibration in a harness assembly. A board guide assists alignment during hand-assembly or automated insertion. The through-hole solder termination with a 0.138" (3.50 mm) post length suits standard PCB thicknesses. The natural polyamide (nylon) housing carries a UL94 V-0 flame rating, so it's accepted inside equipment enclosures that require flame retardance. The operating range spans -40°C to 120°C, covering automotive underhood and industrial cabinet environments.
Contact plating and compliance
Both the mating surface and the solder post carry silver plating — silver gives lower contact resistance than tin for power applications, though it tarnishes in corrosive atmospheres faster than gold. For a clean, dry indoor power supply or appliance environment, silver is a cost-effective choice. The connector is ROHS3 Compliant per the manufacturer listing, and the glow wire compliant feature (per) supports IEC/EN 60335-1 appliance safety requirements.
The 2-1971896-4 carries an Active lifecycle status from TE Connectivity — full production, no end-of-life notice on record.