What this connector is
The Molex 430451806 is the 18-circuit member of the Micro-Fit 3.0 43045 series — a dual-row, right-angle SMT header with 0.118" (3.00 mm) pitch. Square pins mate into the matching Micro-Fit 3.0 receptacle housings; the 4-wall shroud and locking ramp prevent mis-mating and maintain engagement under vibration. Board locks on the housing feet anchor the part during reflow so coplanarity holds across a production run.
What the ratings mean for your BOM line
The 600 V voltage rating is not a selection constraint in most industrial or automotive builds. Operating temperature spans -40°C to 105°C, covering automotive under-hood and industrial enclosures without derating gymnastics. The glass-filled LCP housing carries a UL94 V-0 flammability rating — acceptable for most end-product safety certifications without an additional fire-barrier layer.
Mating and termination
Termination is right-angle surface mount — confirm the board layout has the recommended paste mask and reflow profile for LCP, and that the 0.290" (7.37 mm) insulation height clears any tall components on the board face. All 18 positions are loaded — no load reduction to account for.
Sourcing posture
Listed Active with ROHS3 Compliant status. Packaged in Tape & Reel or Cut Tape — select reel for automated SMT placement, cut tape for hand-build or proto boards. Confirm the BOM position count before quoting a volume to avoid a mismatch between the circuit count on the board and the circuit count in the harness.