All 44 positions are loaded, so it's a direct 1:1 match for a 44-circuit BOM line.
The 0.100" (2.54mm) pitch and 0.100" (2.54mm) row spacing are the classic BergStik grid — any standard 0.100" perforated board or 2.54mm-pitch footprint accepts it. The 0.380" (9.65mm) mating pin length gives enough reach to engage a standard box-header or IDC receptacle, while the 0.120" (3.05mm) solder tail suits a 1.6mm-thick PCB with through-hole solder joints. The overall contact length of 0.600" (15.24mm) means the header stands 0.100" (2.54mm) off the board surface — the insulation height — which is a tight profile for mezzanine stacking. 5A per contact at 110V. Tin on tin works fine for signal duty.
The through-hole termination is soldered; the square pins provide a gas-tight solder joint when properly wetted.