What it is
The Molex 430452002 is the 20-circuit member of the Micro-Fit 3.0 43045 series — a dual-row, shrouded male header rated 8 A per circuit at 600 V, terminated right-angle through-hole with a board lock and locking ramp. All 20 positions are loaded. Contact material is brass alloy; the mating face carries 30.0 µin (0.76 µm) gold plating while the solder tails are 100.0 µin (2.54 µm) tin — a common split for power headers where the mating interface benefits from gold's wear resistance and the board side sees only static solder stress. Insulation is glass-filled liquid crystal polymer (LCP), black, rated UL94 V-0, with an insulation height of 0.290" (7.37 mm). Operating range spans -40°C to 105°C.
What the ratings mean for your design
The four-wall shroud and locking ramp resist cable pull-out in harness environments — a meaningful advantage over friction-fit headers in automotive under-hood or industrial floor-box wiring where vibration and service pull are routine. The board lock feature anchors the header during wave-solder and subsequent mechanical stress. Mating side is gold (30.0 µin) — gold provides wear resistance at the mating interface. Tin on the solder tail is 100.0 µin, durable for through-hole reflow or hand-solder assembly.
Where the class is used
Micro-Fit 3.0 headers are a standard board-to-cable power interconnect in automotive Harnesses (interior distribution, ADAS modules), industrial automation (PLC I/O, sensor bus, motor drives), medical equipment (patient-connected diagnostic instruments), and telecommunications infrastructure (power rails, rack-mount equipment). The shrouding and locking ramp are intentional for harness environments where service access and vibration are both in play.
Mating half
The 430452002 mates with the matching Micro-Fit 3.0 43045 series female receptacle housing with crimp terminals — the same series, 20-position dual-row, 3.00 mm pitch. Confirm the housing's keying configuration matches the panel or wire harness layout before specifying.