The Molex 431606303 is the 3-circuit member of the Sabre 43160 family — a single-row 0.295-inch (7.50 mm) pitch male header in black glass-filled Polyamide (PA46), rated 18 A per circuit at 600 V with tin-plated brass contacts (60 µin thickness). The board-lock feature is moulded in, so through-hole placement picks up secondary retention without a separate clip or wave-solder jig step. Operating range is -40 °C to 75 °C.
Across the same-series peers the decision axis is circuit count. 431600105 is a 5-position variant; 431600106 is 6-position. The 3-position 431606303 right-sizes the BOM line when the circuit count is genuinely three — a 5-position part for a three-wire power rail is over-specified on every front, and a single family across 3/5/6 positions means fewer SKUs to manage. Both peers lack the board lock feature that the 431606303 carries as a moulded-in attribute — no secondary component needed for through-hole retention.