Board-fit profile for a 2-position terminal block header
The 1986717-2 is a 2-position, unshrouded vertical header from TE's terminal block header family, built on a 0.138" (3.50mm) pitch. It mates with a plug or socket from the same 3.50mm terminal block series, typically as the PCB-mount half of a wire-to-board interface for control or signal circuits. Rated 2 A at 150 V UL, this header is suited for low-current control signals, sensor inputs, or auxiliary power taps — not for motor or heater loads. The tin-plated contacts handle moderate mating cycles in benign environments; gold plating is not present, so avoid repeated disconnect/reconnect in corrosive atmospheres.
Pitch, positions, and footprint constraints
At 3.50mm pitch, the two pins occupy a 7.00mm row on the PCB — a compact footprint for a terminal block interface. The 0.138" (3.50mm) contact tail length matches standard 1.6mm-thick boards; verify the tail protrusion through the board for clearance on the opposite side. The vertical orientation means the header stands upright from the board, so the mating plug inserts perpendicular to the PCB. Ensure the enclosure height above the board accommodates the mated plug and wire exit.