Molex 3901-3022 Mini-Fit Jr. Receptacle | 2-Position Dual Row, 4.2mm

Short Description:

Manufacturer: Molex
Part Number: 39-01-3022 (5557-02R1)
Series: Mini-Fit Jr. (5557)
Number of Positions: 2 Positions
Configuration: Dual Row, 4.2mm Pitch
Current Rating: Up to 13A (High Power)
Voltage Rating: 600V AC/DC
Termination Style: Crimp (Contact Socket)
Operating Temp: -40°C to +105°C
Housing Material: Nylon (UL 94 V-2)

Product Detail

Product Tags

Shop Molex 3901-3022 Mini-Fit Jr. Receptacle Housing. 2-position, dual row, 4.2mm pitch, 13A current rating. Ideal for power and signal wire-to-board/wire-to-wire applications at Suqin SZ Connectors.

Data Overview

Attribute	Specification
Brand	Molex
Part Number	3901-3022
Alias Number	39013022 / 5557-02R1 / 0039013022
Tradename	Mini-Fit Jr.
Number of Positions	2
Number of Rows	2
Pitch (Mating Interface)	4.20 mm (0.165 in)
Row Spacing	4.20 mm (0.165 in)
Gender	Receptacle (Female Housing)
Current Rating	13 A Max
Voltage Rating	600 V
Housing Material	Nylon, Natural Color
Flammability Rating	UL 94 V-2
Mounting Style	Cable Mount / Free Hanging
Temperature Range	-40°C to +105°C
Unit Weight	0.023316 oz

Product Details

Product Features	Engineering Advantages	Customer Benefits
Industry-Standard Mini-Fit Jr. Interface	Compatible with a massive ecosystem of 4.2mm pitch headers and plugs.	Global Versatility: Simplifies design-in processes and ensures easy sourcing for replacement parts in power supplies, servers, and home appliances.
High Current Capacity (13A)	Engineered with high-conductivity Nylon housing to support up to 13A per circuit.	Reliable Power Delivery: Handles high-power demands in a compact footprint, preventing overheating and ensuring long-term system stability.
Positive Locking Mechanism	Features a fully integrated thumb-latch for secure mating with audible feedback.	Vibration Resistance: Guarantees that the connection remains locked under mechanical stress, preventing accidental downtime and safety hazards.
Polarized & Keyed Design	Molded with specific shapes to prevent incorrect orientation during assembly.	Error-Proof Installation: Significantly reduces the risk of mis-mating on production lines, ensuring consistent electrical integrity every time.

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Support professional consultation

● After-sales problems
Ensure that the imported original products are genuine. If there is a quality problem, it will be solved within one month of receiving the goods.

Q1: Which terminal pins should I use with the 3901-3022 housing?

A: This receptacle is designed for Molex 5556 series female crimp terminals. Depending on your current and wire gauge requirements, you can choose between tin or gold plating options.

Q2: Can I use this for wire-to-wire connections?

A: Yes, the 39-01-3022 is versatile. It can mate with Mini-Fit Jr. vertical/right-angle headers for wire-to-board applications, or with 3901-2021 series plug housings for wire-to-wire connections.