The Amphenol FCI 68031-126HLF is a 26-position, single-row unshrouded male header from the BERGSTIK II series, on the standard 0.100" (2.54 mm) pitch. It is a through-hole solder-terminated board-to-board interconnect — the mating pins are square, 0.025" square typical for this class, and the overall contact length measures 0.513" (13.03 mm) with a mating pin length of 0.230" (5.84 mm) and a solder tail of 0.183" (4.65 mm). Rated 5 A per contact at a voltage rating of 110 V, the header carries 30.0 µin (0.76 µm) of gold or Gold GXT plating on the mating surface — enough for repeated mating cycles in a production or field-service environment.
The 0.100" (2.54 mm) pitch is the bread-and-butter spacing for through-hole headers — it matches the legacy perf-board and prototyping grid, and the footprint is a standard 0.100" row of plated through-holes.
The insulation height above the board is 0.100" (2.54 mm), with pins protruding 0.230" (5.84 mm) above the housing for mating. The solder tail length of 0.183" (4.65 mm) is sized for a standard PCB thickness, giving enough protrusion through the board for a reliable solder fillet.