Right-Angle Power Header for Board-to-Wire Harnesses
The Molex 430451222 is a 12-circuit, dual-row right-angle male header from the Micro-Fit 3.0 43045 series, designed for board-to-wire power interconnects. Key features include a 3.00 mm pitch, 8 A per circuit current rating, 600 V voltage rating, gold-plated mating contacts (15.0 µin), a shrouded 4-wall housing with a locking ramp, and integrated board locks for through-hole solder attachment. The 8 A per circuit rating means each pin can carry moderate power — think a DC rail or a motor drive line — not just a signal. The 600 V rating provides enough creepage for industrial or telecom power distribution at this pitch. Applications span automotive, general purpose, industrial, medical, and telecommunications equipment — typical for a Micro-Fit 3.0 header used in harness assemblies inside enclosures, on board edges, or in vibration-prone locations where the locking ramp and board lock provide mechanical security.
The 3.00 mm pitch and 0.118" row spacing set the board footprint — a dual-row layout that packs 12 circuits into a compact edge length. The 0.125" (3.18 mm) solder tail length is standard for through-hole boards of typical thickness. The UL94 V-0 LCP housing handles the thermal load of 8 A per circuit across all 12 positions, with the glass-filled material providing dimensional stability through reflow or wave solder.
Comparison with the 10-Circuit Sibling
Against the 10-circuit 430451221, the 430451222 adds two positions at the same 3.00 mm pitch and dual-row layout. The 12-circuit version matches a 12-position BOM line; the 10-circuit sibling fits a 10-position requirement. All other key specs — 8 A per circuit, 600 V, gold plating, board lock, locking ramp, UL94 V-0 — are identical across the two variants.