What it is
The Molex 430451422 is the 14-circuit member of the Micro-Fit 3.0 43045 series — a dual-row, right-angle header with through-hole solder termination, four-wall shrouding, and a locking ramp. Rated 8 A per circuit at 600 V, it uses gold-plated contacts on the mating face (15.0 µin) and tin-plated solder posts (100.0 µin) for a balance of connection durability and solderability.
What the ratings mean
The gold resists oxidation and maintains low insertion force across multiple mating cycles; the thick tin promotes reliable solder wetting and resists whiskering. The 8 A headline gives thermal headroom for signal-level designs without restricting the connector to power. The 600 V rating puts this well above typical harness signal voltages — automotive ECU-level interconnects, industrial control bus power taps, and medical device power rails all sit comfortably under it. The 3.00 mm pitch and dual-row layout place it in the mid-density range: dense enough for harness routing constraints, open enough for hand-assembly and through-hole wave soldering. The four-wall shroud and locking ramp are the vibration-protection mechanism — the shroud prevents mis-mating between adjacent headers in a multi-connector panel, and the ramp locks the mated housing in place so it cannot back out under shock. The integral board lock adds a secondary retention to the PCB itself, which matters in any application where the board sees flex or repeated handling. The UL94 V-0 LCP housing gives a flame-retardant rated body — relevant for in-cabin automotive and industrial enclosure applications where the connector must pass glow-wire or flame-barrier requirements. The 0.290-inch (7.37 mm) insulation height sets the mated stack profile against the board surface, which feeds the z-height budget in stacked or enclosed assemblies.
Sourcing and lifecycle
The 430451422 is listed Active and ROHS3 Compliant. Sourced to order against BOM quantity — confirm the position count against your harness circuit count before committing, and identify the matching Micro-Fit 3.0 receptacle housing for the mating half. No official successor is listed.