33471-3306

The 33471-3306 is a 3-position mat-sealed female connector assembly from Molex’s industry-standard MX150™ automotive connector series. Designed for wire-to-wire applications in demanding environments, this single-row receptacle housing is part of the 33471 series that includes configurations from 2 to 6 positions in single-row layouts (with 4 to 20 position options available in dual-row 33472 series). The MX150 connector system is one of the most widely adopted sealed automotive connector platforms globally, used by major automotive OEMs and Tier 1 suppliers for engine compartment, chassis, and exterior applications where reliable sealed connections are essential. The 33471-3306 comes as a pre-assembled unit containing the housing, mat seal, and terminal position assurance (TPA) components, simplifying harness manufacturing by eliminating the need to handle individual wire seals. The integrated Connector Position Assurance (CPA) feature provides visual and tactile confirmation that the connector is fully mated and locked. With its 3.5mm compact pitch, 22A current rating, IP6K7 and IP6K9K sealing capability, and USCAR-2 Class 3 qualification (-40°C to +125°C), the MX150 series delivers excellent performance in a space-efficient package. The system uses industry-standard 1.50mm ISO blade terminals with tin, silver, or gold plating options, and supports wire sizes from 0.35mm² to 2.5mm² (22 AWG to 12 AWG).

The Molex MX150 connector system creates reliable, sealed electrical connections in harsh automotive and industrial environments. The system consists of two mating connector halves — a receptacle (female) like the 33471-3306 and a plug (male) from the 33481 series — each containing crimped terminal contacts. When the connector halves are mated, the male blade terminals insert into the female receptacle contacts, creating electrical connections through spring beam contact forces. The mating is guided by polarization features that prevent mismating, and an integrated locking latch with Connector Position Assurance (CPA) ensures that the connector halves are securely joined. The CPA device only moves to its final locked position when the connector is fully mated, providing assembly verification. Sealing is achieved through a multi-layer approach: a mat seal (porous silicone or rubber gasket) at the wire entry end seals around each individual wire, while an interface seal between the mating halves seals the connection interface. This dual-seal approach provides IP6K7 (protection against temporary immersion) and IP6K9K (protection against high-pressure steam-jet cleaning) ingress protection. The terminals are crimped to the wires using standard crimp tooling, and the Terminal Position Assurance (TPA) device ensures each terminal is properly seated and retained in the housing. The entire system is designed to withstand the mechanical, thermal, and chemical stresses encountered in under-hood and under-chassis automotive applications.

• Contact Type: 1.50mm ISO style blade terminal (male) / receptacle contact (female)
• Contact Plating Options: Tin, Silver, or Gold
• Wire Size Range: 0.35 to 2.5 mm² (22 to 12 AWG) depending on contact type
• Keying: Keying Option A — prevents mating with different keyed variants
• Locking: Integrated locking latch with CPA (Connector Position Assurance)

The 33471-3306 is a 3-position single-row female receptacle connector. It mates with male plug connectors from the 33481 series (single-row). Contacts are sold separately — common female contact part numbers include the 33012 series (tin plated) and 33001 series (silver/gold plated). Please refer to the official Molex datasheet for complete specifications.

• Engine Compartment Wiring: The primary application — MX150 connectors are widely used in under-hood environments for connecting sensors, actuators, and modules where heat, vibration, and moisture exposure require sealed connectors
• Chassis and Under-Vehicle Connections: Deployed for under-chassis wiring including ABS wheel speed sensors, brake wear sensors, suspension height sensors, and other connections exposed to road splash and debris
• Exterior Lighting: Used for headlight assemblies, taillights, fog lights, and daytime running lights where moisture sealing is critical for reliable operation
• Commercial Vehicles and Trucks: Found in heavy-duty trucks, buses, and commercial vehicles for engine, chassis, and body electrical connections requiring USCAR Class 3 performance
• Off-Highway and Agricultural Equipment: Used in construction machinery, agricultural tractors, and forestry equipment where high sealing capability and rugged construction are essential
• Marine Applications: Suitable for boat and marine electrical systems where IP6K7 sealing provides protection against water spray and temporary immersion
• Power Distribution: Used in junction boxes, power distribution units, and fuse/relay boxes for distributing power to various vehicle systems
• Sensor and Actuator Connections: Connects various automotive sensors (temperature, pressure, position) and actuators (solenoids, motors) in powertrain and chassis systems