Active Sourcing for a 3-Position Grace Inertia Header
The 3-1971798-3: This is a 3-circuit, single-row header from TE's Grace Inertia (GIC) series, pitched at 2.50 mm.
The 3 positions match a 3-wire harness — think sensor power, signal return, or a simple discrete I/O run. Both the mating contact surface and the solder post are tin-plated. In a panel or enclosure subject to machine vibration, that latch keeps the connection from walking loose.
How It Compares to Nearby Siblings
Against the 1-292164-1 (CT series, 2.00 mm pitch, 11 positions, right-angle), the 3-1971798-3 trades a narrower pitch and higher position count for a wider 2.50 mm pitch and a lower 3-position count — a simpler, more robust footprint for a low-circuit harness.
The insulation material is thermoplastic; the contact base is copper alloy. ROHS3 Compliant per current TE certification.