What This Connector Is
The Molex 430452202 is the 22-circuit member of the Micro-Fit 3.0 43045 series — a dual-row, shroud 4-wall power header built for board-to-cable wire interconnect in harness assemblies. The right-angle through-hole body mounts flush to the PCB edge and accepts the matching Micro-Fit 3.0 receptacle housing on the mating face. The locking ramp on the header body mates with the primary latch on the corresponding plug housing to resist vibration pull-out in automotive and industrial environments. The board-lock feature adds lateral retention to the PCB during wave-solder and field service — a detail that matters when the assembly ships as a mated pair or goes through multiple service cycles.
Key Ratings and What They Mean
22 positions across 2 rows at 3.00 mm pitch gives a compact footprint for wire harnesses carrying power and signal on the same connector. The 8 A per circuit rating at up to 600 V covers most low-voltage power distribution nodes — industrial control, HVAC, medical system power rails — without needing a dedicated power-only connector. The contact plating split is deliberate: 30.0 µin (0.76 µm) gold on the mating face carries the wipe cycles and contact integrity at low current; 100.0 µin (2.54 µm) tin on the solder tail handles the solder-side oxidation resistance and long-term solder joint reliability. Tin thickness on the post side is well above the minimum for a connector that will see reflow or wave solder — the thicker deposit resists whisker formation in storage and gives a more forgiving solder wetting window. The 0.290" (7.37 mm) insulation height and 0.125" (3.18 mm) post length are standard for this series footprint — the mated pair sits at the series-defined stack height and the post length clears most PCB thickness tolerances. The -40°C to 105°C operating window covers sealed automotive cabin environments through industrial floor-mount deployments — the LCP glass-filled housing holds its dimensions across that range and carries a UL94 V-0 flammability rating, which is the baseline for equipment destined for enclosed panels.
Sourcing and Lifecycle
The 430452202 is listed Active and ROHS3 Compliant — no last-time-buy signal and no EOL notice on record. Quoted to order against the BOM quantity via RFQ; confirm the full position count and the mating receptacle housing part number before committing to a new BOM line. The Micro-Fit 3.0 system is an established Molex series — no official successor or cross-reference variant is cited for this specific order code.