Product Introduction
The Molex 0430450217 is a 2-circuit, dual-row Micro-Fit 3.0 header designed for board-to-cable/wire power interconnects. It carries an 8 A per circuit current rating and a 600 V voltage rating, with 30.0 µinch gold plating on the mating contacts for corrosion resistance and repeated mating cycles. The header is shrouded on all four walls, uses a locking ramp for secure mating, and includes a board lock for SMT retention during reflow. It is specified for automotive, general-purpose, industrial, medical, and telecommunications applications.
Key Features and Characteristics
The 3.00 mm pitch and dual-row configuration give enough creepage for the 600 V rating without forcing an oversized board footprint. The 30.0 µinch gold plating on the mating side is a heavy-duty finish — it handles repeated mating cycles and corrosive environments better than the tin-plated post side. The board lock holds the header in place during SMT reflow and resists shear forces from cable strain. The locking ramp provides an audible click when fully mated, which is useful in field-service or vibration-prone installations.
Applications and Environments
This header is suited for power distribution inside automotive control modules, industrial control cabinets, medical devices, and telecom infrastructure. The -40 °C to 105 °C operating range covers underhood automotive and outdoor industrial cabinet environments. The UL94 V-0 LCP housing meets the flame-rating requirement for equipment inside an enclosure.
What the Key Ratings Mean
The 8 A per circuit rating is the continuous current each contact can carry at a 30 °C temperature rise — sized for a moderate power rail or a multi-circuit harness where each position shares the load. The 600 V rating at 3.00 mm pitch gives a comfortable creepage margin for 48 V or 400 V DC bus applications. The 30.0 µinch gold on the mating side is the contact that matters for signal integrity over time; tin on the solder tail is standard for reflow compatibility.
Mating and Termination
This header mates with the matching Micro-Fit 3.0 receptacle housing (such as the 43025 series) using crimp terminals. The locking ramp engages with the receptacle latch for a positive hold. Termination is surface-mount solder, with the board lock providing SMT retention. The header is supplied in Tape & Reel for automated pick-and-place.