3.50mm Pitch Unshrouded Header for Terminal Block Mating
The 1986717-3 is a 3-position vertical unshrouded header from TE Connectivity's terminal block header family, on a 0.138" (3.50mm) pitch. It mates with a 3.50mm-pitch pluggable terminal block — the unshrouded design means the header pins are exposed, relying on the mating plug's housing for alignment and polarisation.
The 0.138" (3.50mm) pitch and 0.138" (3.50mm) contact tail length set the PCB footprint — the through-hole solder tails are 3.50mm long, suitable for standard 1.6mm-thick boards. The green UL94 V-0 nylon housing provides flame retardance for equipment inside enclosures.