What it is and where it sits in the series
The Molex 430452413 is the 24-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 through-hole with kinked pins and gold plating on the mating face. The series uses a 3.00 mm pitch and two rows on 0.118-inch spacing, with a four-wall shroud and locking ramp that takes the place of the TPA (Terminal Position Assurance) feature found on the receptacles it mates with. The board-guide feature on the header body assists alignment during through-hole placement and reduces the risk of pin-to-shroud collision before the joint is made.
Plating grade and what it means for the circuit
The mating face carries 15.0 µin (0.38 µm) gold over nickel — the grade that governs low-resistance contact performance and cycle life at the mating interface. The post side is 100 µin (2.54 µm) tin over the full solder-tail length, which is the thick deposit needed for reliable through-hole solder fill and barrel wetting without gold embrittlement concerns.
What this connector class is used for
Board-to-Cable/Wire Micro-Fit 3.0 headers are the power-side board-mount half of a pluggable harness interlock widely found in industrial automation, medical console power rails, automotive module feeds, and telecom rack equipment. The shrouded header prevents mis-mating when the harness connector is dropped onto the board in a production fixture or field service bay. The UL94 V-0 liquid crystal polymer housing supports the 105 °C upper operating limit, making the 430452413 suited for enclosed equipment cabinets where ambient temperature rise above the board is a real concern rather than a theoretical floor.