Product Overview
The Molex 0430451024 is a 10-circuit, dual-row header from the Micro-Fit 3.0 43045 series, designed for board-to-cable/wire interconnects. It uses a 3.00mm pitch, which provides a good balance between current density and board space for power distribution in automotive, industrial, and telecom equipment. The header is fully shrouded with four walls, protecting the male pins during handling and mating. Rated at 8A per circuit and 600V, this connector carries enough headroom for moderate power rails and signal lines in a harness assembly. The tin-plated mating contacts are cost-effective for applications with a limited number of mating cycles, such as an internal board-to-wire connection that is mated once during manufacturing.
Key Features and Mechanical Design
The header uses a locking ramp fastening system that provides an audible click when fully mated with the corresponding Micro-Fit 3.0 receptacle housing, ensuring secure retention in high-vibration environments. Board locks on the through-hole solder tails hold the header in place during wave soldering and resist shear forces from cable strain after assembly. The housing is molded from a glass-filled LCP with a UL94 V-0 flammability rating, making it suitable for equipment that requires a flame-retardant enclosure. The operating temperature range of -40°C to 105°C covers the thermal demands of automotive underhood and industrial cabinet environments.
Comparison with 0430451025
The 0430451025 is the 12-circuit sibling in the same Micro-Fit 3.0 series, sharing the same 3.00mm pitch, 8A rating, tin plating, and dual-row layout. The only difference is the position count: 12 circuits versus 10 for the 0430451024. If your BOM calls for 10 circuits, the 0430451024 is the correct fit; the 12-circuit version would leave two positions unloaded.