Molex 430451200 Micro-Fit 3.0 Header 12-Position 8A

The Molex 430451200 is the 12-position dual-row member of the Micro-Fit 3.0 43045 series — a fully shrouded right-angle through-hole header sized for board-to-cable power and signal distribution in industrial, automotive, and medical interconnect. Tin-plated brass contacts are rated 8 A per circuit at 600 V, and the 3.00 mm pitch aligns with the standard footprint of the Micro-Fit 3.0 receptacle housing family, making the header a direct board-side complement to the matching plug half in a wire-to-board harness assembly. The 4-wall shroud, locking ramp, and board-lock feature together address panel-side retention under vibration — the shroud prevents mis-mate, the ramp locks the housing positively, and the board-lock anchors the header to the PCB during assembly stress. All 12 positions are loaded. The insulation is black liquid crystal polymer (glass filled) rated UL94 V-0, and the operating window spans -40°C to 105°C, covering the thermal extremes of engine-compartment and industrial floor equipment. Contact finish is 100.0 µin (2.54 µm) tin on both the mating interface and the solder tail, with square-pin contact geometry on a 0.118 in (3.00 mm) row spacing that matches the series pitch. Solder-tail length is 0.125 in (3.18 mm) and insulation height is 0.290 in (7.37 mm) — the right-angle orientation determines the board profile in the z-axis.