What it is and where it sits in the series
The Molex 430452227 is the 22-circuit member of the Micro-Fit 3.0 43045 series — a dual-row, 3.00 mm pitch header designed for board-to-cable power and signal distribution. The 22-position count puts it near the upper end of the series, giving a single-connector option for harnesses that would otherwise require a daisy-chain of smaller headers. All 22 positions are loaded.
Ratings that drive the fit decision
Current rating is 8 A per contact. The tin-tin plating throughout — mating side and solder tail — means this is a good fit for power distribution within that 8 A envelope rather than high-cycle signal mating. The 60.0 µin (1.52 µm) tin thickness on the mating face gives reasonable reconnection durability, but if the application demands hundreds of mate cycles, the plating grade is the limiting factor, not the current ceiling. Voltage rating of 600 V is well above the typical ceiling for this connector family and covers most industrial, medical, and telecom bus voltages without derating — the headroom is genuine, not nominal. The four-wall shrouding and locking ramp keep the mated pair seated under vibration, which matters in automotive and industrial harness runs where the header sees side-load from cable routing. The board guide feature reduces pin damage during field insertion. Operating range is -40°C to 105°C, which is standard for the series and covers refrigerated enclosures through industrial ambient. The LCP housing is glass-filled and rated UL94 V-0.
Termination and board fit
Through-hole solder termination with a post length of 0.125 in (3.18 mm). The insulation height of 0.390 in (9.91 mm) is the mated board-stack dimension to account for in the z-height budget. The 0.118 in (3.00 mm) row spacing matches the pitch, so the footprint is a standard dual-row grid with no stagger. This is a male pin header — it mates with the matching Micro-Fit 3.0 receptacle housing. Verify that the receptacle housing's latch style is compatible with the locking ramp on this header.