The 146133-1: Three positions in a single row, all loaded, make this a compact signal jumper or a low-channel-count board-to-board link.
Unshrouded male pin header, square pins, 0.320" (8.13 mm) mating length. Push-pull fastening — no latch, so it relies on the mating receptacle's friction or a secondary retention feature for vibration resistance. Surface-mount solder termination; the SMT pads must match the 0.100" pitch for reliable reflow.
UL94 V-0 rated LCP housing, operating from -65°C to 105°C. Tin-lead finish means the part is not RoHS compliant — confirm your assembly's exemption allowance before committing.