6.35mm pitch, 3-position header with locking ramp
The 643414-3 is a single-row, 3-position header from TE's Universal MATE-N-LOK series, designed for board-to-cable/wire applications. The 0.250" (6.35mm) pitch sets the PCB footprint and determines compatibility with the mating receptacle — a standard spacing that leaves room for routing between pads on a 2-layer board.
30µin gold on mating face — field-service grade
In a field-service application where the connector is cycled a few times per year, this plating grade gives decades of reliable contact resistance. The solder tails are tin-plated, which is the standard for wave-solder wetting on through-hole boards.