Right-angle header for board-edge power routing
The 1-178293-3: This is a 3-position, single-row header from TE's Dynamic D-3100 series, pitched at 0.150" (3.81mm) and terminated through-hole, right-angle.
What the 3.81mm pitch and detent lock mean on the line
The 3.81mm pitch is wider than the 2.54mm standard, which means the board traces have more room to route between pads — useful when the header carries 250V or sits near a transformer. The detent lock gives a positive snap when mated, so the connector stays put under vibration without needing a screw or latch. The 4-wall shrouding protects the tabs from being bent during handling or blind mating.