46 Circuits on 1.27mm Pitch — SMT Unshrouded Header
The 20021121-00046T8LF: It's a surface-mount solder termination, push-pull fastening, intended for board-to-board stacking where the mating receptacle sits directly above on the same pitch. The 1A per contact rating is conservative for the contact size — the limiting factor is the narrow pitch and the thermoplastic housing's thermal rise, not the copper alloy contact itself. The solder post gets a 50.0µin tin finish, which is standard for reflow compatibility.
No stock-holding claim — sourced per BOM line.