What this 8-position header does in a build
The 1-178317-3 is an 8-position, single-row header from TE's Dynamic D-3100 series, on a 3.81mm pitch — a spacing that fits standard industrial wire-to-board and board-to-board layouts without forcing a tight PCB trace fan-out. It is a vertical through-hole solder header with a 4-wall shroud that fully encloses the rectangular tab contacts, preventing bent pins during handling and mis-mating with the wrong receptacle. The mating finish is 30.0µin gold over copper alloy, which supports repeated mating cycles in environments where tin would fret or corrode — typical for industrial control cabinets or test equipment that sees periodic reconnection.
Board lock and detent lock — what they mean for assembly
Two board locks on the through-hole tails anchor the header to the PCB before soldering, keeping it aligned during wave or selective solder processes and resisting shear forces from cable strain after the receptacle is mated. The detent lock on the shroud provides a positive tactile click when the receptacle is fully seated — no separate latch to break, but the retention force is lower than a screw-lock or friction-lock housing.
Sourcing and lifecycle status
RoHS3 compliant per the manufacturer's declaration.