What it is
The Molex 430451407 is the 14-circuit member of the Micro-Fit 3.0 43045 series — a dual-row 0.118" (3.00 mm) pitch shrouded header with a right-angle SMT footprint and board lock. The locking ramp on the housing mates with the matching Micro-Fit 3.0 plug to resist vibration disconnect, and the four-wall shroud guides alignment and prevents stubbing during field assembly. Contact finish splits across the interface: 15.0 µin (0.38 µm) gold on the mating side (/) for contact reliability across repeated cycles, and 100.0 µin (2.54 µm) tin on the solder tails (/) for solderability and long-term atmospheric resistance. The underlying material is brass and the housing is glass-filled liquid crystal polymer rated UL94 V-0 (//).
Ratings that drive the fit
At 8 A per circuit and 600 V (/), this rating headroom covers both signal-level and moderate power duties within the same connector — the limiting factor in any given application is usually the wire gauge the harness designer terminates rather than the contact rating itself. The operating range of -40°C to 105°C places this in the temperature class suitable for both underhood-adjacent industrial and many automotive interior applications. The insulation height of 0.290" (7.37 mm) governs the mated stack profile and keep-out in the z-axis — confirm this against the board assembly stack-up before committing the footprint. Row spacing matches the 0.118" (3.00 mm) pitch, so the dual-beam routing channels run parallel and equidistant across the full 14-circuit span.
Where this class is used
Board-to-cable wire headers in the Micro-Fit 3.0 family are common in harness assemblies where a PCB must interface to a wire harness in industrial automation, medical equipment, and telecom infrastructure — anywhere the locking ramp and shroud combination adds the mechanical security needed against service vibration or field handling. The listed applications on this part are Automotive, General Purpose, Industrial, Medical, and Telecommunications.