What this connector is
The Molex 430452429 is the 24-circuit member of the Micro-Fit 3.0 43045 series — a dual-row 3.00 mm pitch header rated 8 A per contact at 600 V, with a 4-wall shrouded body and locking ramp for vibration-secure mating. All 24 positions are populated and the package ships in tray.
Plating split — what it means for the application
The contact finish splits across the interface: gold at 30.0 µin (0.76 µm) on the mating face and tin at 100.0 µin (2.54 µm) on the solder tail. The gold layer handles repeated mating cycles and maintains low contact resistance at first mate; the thick tin on the solder side promotes reliable solderability and resists whiskers. For a permanent installation with no field reconnect requirement, the gold is pure durability headroom — the tin side is what matters at the board.
Where this series is used
Board-to-cable power and signal distribution in automotive harnesses, industrial automation modules, medical instrumentation, and telecom infrastructure — anywhere a compact 3 mm pitch header must survive vibration and repeated matings without a large footprint. The shrouded body and locking ramp are the features that keep it in the harness rather than falling out under flex.
Temperature and material
The housing is glass-filled Liquid Crystal Polymer rated UL94 V-0, with an operating range of -40°C to 105°C — wide enough for under-hood and industrial enclosure environments. The board guide feature on the housing aligns the header during through-hole placement and keeps the connector seated during wave or reflow.
What locks it in the BOM
24 positions at 3.00 mm dual-row pitch with 0.118-inch row spacing. The square pin contact shape accepts the standard Molex Micro-Fit crimp terminal for wire terminations.