What this connector is
The Molex 430452212 is the 22-circuit member of the Micro-Fit 3.0 43045 series — a dual-row board-to-cable wire header with a 3.00 mm pitch. Tin-plated brass contacts carry 8 A per circuit at up to 600 V, and the 4-wall shroud with locking ramp keeps the mated pair locked under vibration in automotive and industrial harness environments.
What the ratings mean for your fit
The 3.00 mm pitch and 22-position dual-row layout match the standard Micro-Fit 3.0 footprint — compatible with any 43045-series crimp receptacle housing sized for 22 circuits. The 8 A per-contact rating handles mid-power harness duty comfortably; the limiting factor in a dense dual-row is not the current but the circuit count. Tin plating at 100.0 µin (2.54 µm) thickness gives solid solderability and acceptable mating-cycle life for static or low-reconnect applications. The kinked-pin through-hole termination provides mechanical retention in the PCB — the kinks grip the barrel before solder wicks down, which matters in wave-solder processes where thermal wicking can lift the tail. The board guide feature and 4-wall shrouding provide alignment and touch-proof protection on the mating face; the locking ramp holds the housing retention tab positively. The 0.390-inch (9.91 mm) insulation height keeps the header standoff above the board surface for clean lead-in on the mated side.
Where it is used
Listed for automotive, general purpose, industrial, medical, and telecommunications applications — the -40 to 105 °C operating range and UL94 V-0 flammability rating cover the temperature and safety envelope for all of those. The through-hole mounting gives mechanical robustness over surface-mount in high-vibration environments, and the 600 V rating is sufficient for most low-voltage power-distribution and signal-harness applications in those markets.
Sourcing and lifecycle
The 430452212 is Active and ROHS3 Compliant — no EOL notice on record. Quoted to order against the BOM quantity; confirm the mating half (a 43045-series 22-position receptacle housing and its compatible crimp terminals) is also in your active BOM before placing the RFQ.