What it is
The Molex 430450612 is the 6-circuit member of the Micro-Fit 3.0 43045 header series — a dual-row through-hole header with four-wall shrouding, a locking ramp, and board-guide features on the housing. Pitch is 0.118" (3.00 mm) with 0.118" (3.00 mm) row spacing — a square 2-row grid that matches the dual-row layout of standard board-to-wire headers in this series. Contacts are brass with 100 µin (2.54 µm) tin plating on the mating face and tin on the solder tail — the 100 µin grade is the heavy-deposit tin option in this series, designed for higher mating-cycle durability than the thin-tin variant.
Ratings that drive the fit
Rated 8 A per contact. The current ceiling is governed by the contact cross-section and the LCP housing thermal limit — a tin-plated contact at this pitch carries power-distribution capability beyond signal-level currents. Voltage rating is 600 V — well above what most board-level harnesses need, so voltage is not the limiting factor for this series in its typical applications. Operating range is -40°C to 105°C, matching the envelope for most industrial and automotive in-cabinet environments. Insulation height is 0.390" (9.91 mm) — the board-guide boss sits at that dimension above the PCB surface and keys the matching receptacle housing during mating to prevent rotation or cocking under vibration. Post length is 0.125" (3.18 mm) — standard through-hole tail depth for this series. Flammability is UL94 V-0, which is the minimum for enclosed industrial equipment and most automotive interior zones.
Where this class is used
Micro-Fit 3.0 headers are used as board-to-cable power interconnects in harness assemblies across industrial automation, automotive interior modules, medical equipment power rails, and telecom infrastructure. The four-wall shrouding and locking ramp make them suited for any application where vibration or cable pull could unmate a standard friction-fit header.
Sourcing and compliance
Lifecycle status is Active. ROHS3 Compliant — the standard compliance declaration covers EU end-of-life chain-of-custody for industrial equipment manufacturers. No official successor order code is listed for this specific part number. For same-series sourcing, the 43045 series includes multiple position counts — if your circuit count shifts, a different position count in the same series is the primary cross-reference candidate.