Molex Mini-Fit Jr Series Straight Through Hole PCB Header 4 Contacts 4.2 mm Pitch 2 Row Shrouded 39-29-9043

The Molex 39-29-9043 Mini-Fit Jr Series Straight Through Hole PCB Header is a robust and reliable connector solution designed specifically for high current wire-to-board applications. It features a 4-contact configuration arranged in 2 rows with a 4.2 mm pitch, making it suitable for compact and dense PCB layouts where space and performance are critical.

The connector housing is made from durable nylon material, offering high insulation and mechanical strength. The shrouded design includes fully isolated terminals that protect the contacts from debris and accidental damage, ensuring longevity and safety during use. The scoop-proof housing protects pins even when mated at severe angles, reducing the risk of bent or damaged contacts.

Polarization and keying features prevent incorrect mating by guiding the connector during assembly, while the positive locking mechanism ensures a secure connection resistant to shocks and vibrations, signaled by an audible click when fully mated. The brass contacts plated with tin guarantee excellent electrical conductivity and resistance to corrosion.

This connector supports a voltage rating of up to 600V and current capacity of 8A per circuit, making it ideal for industrial automation, consumer white goods, networking equipment such as routers and switches, and office equipment that demand reliable power interconnections. Its operating temperature range of -40°C to 105°C supports various environmental conditions encountered in industrial and commercial settings.

Designed for through-hole mounting on PCBs, this connector simplifies soldering and supports stable mechanical attachment. Versions of Mini-Fit Jr connectors often include options such as snap-in plastic PCB retention pegs or mounting flanges for additional mechanical stability.

Applications for this PCB header include high current, high-density wire-to-board interconnections in consumer electronics, industrial automation gear, data communication systems, and more, where consistent electrical performance and reliability are paramount.

Constructed with nylon housing for durability and insulation. Features fully isolated terminals to protect against debris and mishandling. Scoop-proof housing design prevents contact damage. Includes polarization and keying to prevent mismating.

Positive locking mechanism secures connection during shock or vibration. Provides audible click confirmation when fully mated. Brass contacts with tin plating ensure reliable conductivity. Supports wire-to-board applications with through-hole mount and straight orientation.

Operates across a wide temperature range from -40°C to 105°C. Rated for 600V and current up to 8A per circuit. Browse the Molex brand collection for high-quality connectors and components suited for a variety of industrial, commercial, and laboratory applications.

Explore more products in our PCB Headers category.