The Amphenol 68023-226HLF is a 26-position, single-row unshrouded header from the BERGSTIK® II series, built on the standard 0.100" (2.54mm) pitch. It is a board-to-board interconnect — male pin, square contact shape, through-hole right-angle mounting. The 5A per-contact rating with 15µ" (0.38µm) gold or Gold, GXT™ mating finish puts it in the signal-to-light-power class; the 0.136" (3.45mm) mating pin length and 0.305" (7.75mm) solder tail length define the board stack and through-hole drill depth. That keeps the footprint compact and the cost low, but it also means the mated pair relies entirely on the mating receptacle's latch or a secondary retention feature for vibration resistance. The 0.100" pitch is breadboard-compatible — a legacy grid that also makes it straightforward to route traces between pads on standard 1-ounce copper.
Termination is solder — through-hole for the right-angle tails. The 0.305" (7.75mm) post length fits standard 0.062" to 0.093" thick PCBs with enough tail protrusion for a reliable solder fillet on the bottom side.