Molex Automotive Connector Female Black Cable Crimp 4 Way, 3A, PCB Header, 34791-0040

The Molex 34791-0040 is an automotive-grade female connector, engineered for robust cable-to-cable interconnections in vehicle and industrial electrical systems. This connector features a compact, single-row 4-way configuration, allowing integration into limited-space environments while maintaining secure contact engagement.

Constructed from black polybutylene terephthalate, the housing provides exceptional mechanical strength and resistance to environmental stress and vibration. The crimp termination style streamlines installation and ensures consistent electrical performance during initial assembly and repeated maintenance operations.

Each connector supports up to four contacts arranged in a PCB header form, with a 3 ampere per circuit current rating, making it suitable for automotive circuits and various power or signal distribution tasks in industrial automation. The contact system utilizes a copper alloy base material with protective gold, silver, and tin plating, ensuring both conductivity and longevity under dynamic temperature conditions ranging from -40 to 105 degrees Celsius. The Mini50 Unsealed Receptacle design with polarization option A further enhances secure mating and lowers insertion errors.

This model maintains a low profile at 7.64 mm height, 12.1 mm width, and 14.25 mm depth, facilitating installation in compact modules and enclosures, as commonly required in cable assemblies, vehicle subsystems, sensor wiring, and specialized PCB applications. The 34791 series is well-regarded for its compliance with critical industry standards such as REACH SVHC and EU RoHS, contributing to safer and environmentally responsible deployments.

Typical use cases include automotive harness manufacturing, component interconnects in electrical control units (ECUs), and custom cable assemblies for test and prototyping in manufacturing and laboratory settings. The connector's operating reliability, material choices, and versatile termination support modern automotive and electronics industries' stringent demands.

Browse additional automotive connectors, cable interconnects, and wiring accessories from Molex and other leading brands in the Electronics & Electricals > Electronics Components > Automotive Connector category.