What this header is and where it sits in the 43045 series
The Molex 430450224 is the 2-circuit member of the Micro-Fit 3.0 43045 series — a dual-row board-to-cable header with a 3.00 mm row pitch and square brass pins designed to mate with the matching Micro-Fit 3.0 receptacle housing and crimp terminal. The header carries full 4-wall shrouding and a locking ramp that mates with the receptacle's latch tab, providing positive retention beyond what an unshrouded header can offer. Board guides and a board-lock feature position the header during through-hole insertion and resist pull-out once the assembly is wave-soldered.
What the key ratings mean for your selection
The 8 A per circuit rating is the connector's own ceiling — the circuit is brass and tin-plated at 60.0 µin (1.52 µm) on both the mating interface and the solder-tail side. The 600 V rating is well above most signal or power distribution rails and reflects the industrial-grade rating built into the LCP housing (, UL94 V-0). At 2 positions, this is typically deployed on a low-circuit power tap or a dedicated signal pair rather than a multi-branch harness node. Insulation height is 0.390 in (9.91 mm) from the board face to the top of the housing. The through-hole pin extends 0.125 in (3.18 mm) past the board; the kinked pin anchors mechanically in the plated hole before solder reflow, improving hole-fill and pull-through resistance in through-hole assembly.
Where this connector class is used
Micro-Fit 3.0 headers are used as board-to-cable power and signal distribution points in harness assemblies across industrial automation, automotive module wiring, medical device interconnects, and telecom infrastructure. The combination of 4-wall shrouding, locking ramp, and 600 V rating makes the series suited to in-cabinet distribution where vibration and accidental unlatching are design risks.