Wire-to-Board, Wire-to-Wire

Mini-Fit Sr. Connectors

The Mini-Fit Sr. Power Connector Family offers robust and flexible interconnect solutions, with high-current ratings suitable for power applications up to 50.0A and various configurations for versatile use in multiple industries. These connectors are designed for high-density, high-current wire-to-wire and wire-to-board applications with TPA and polarization, providing reliable connections while maintaining ease of assembly.

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Pitch	Current	Circuits	Wire Gauge	Operating Temperature
10.00mm	Up to 50.0A	2 to 14	16 to 8 AWG	40° to +105°C

Features and Benefits
Datasheets and Guides
Applications by Industry

PCB Headers

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Connector Housings

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Mini-Fit Sr. Receptacle Housing 0428160612

Crimp Terminals

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Connector Accessories

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Mini-Fit Sr. Dual Row TPA Retainer 0439801003

Power and Signal Cable Assemblies

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Mini-Fit Sr.-to-Mini-Fit Sr. OTS Cable Assembly 369240201

Features and Benefits

Molex Mini-Fit Sr. products represent a series of power connectors known for their high-current and high-density features, designed to meet the needs of power applications that require reliable and robust connections in smaller spaces.

The Mini-Fit Sr. series specifically focuses on delivering high-current ratings for up to 50.0A per circuit with low-engagement forces. The connectors are available in single-row or dual-row configurations with the ability to support between 2 and 14 circuits, providing flexibility for different design requirements. The Mini-Fit Sr. housing includes a polarizing feature which helps prevent misalignment to ensure a proper connection.

These products are commonly used across industries including automotive, industrial, consumer and commercial electronics for applications such as power supplies, motor controls and other high-current scenarios where dependable connections are vital. The Mini-Fit Sr. connectors are recognized for their durability, reliability and ease of use, making them an excellent choice for power connectivity challenges where space is at a premium and high performance is demanded.

Helps prevent mis-mating
Polarized housing designs allow connectors to be inserted in a specific orientation to avoid incorrect mating and to minimize damage.

Supports high-power application requirements
Isolated contacts have up to 50.0A.

Offers excellent contact reliability
The dual-beam (female) terminal design has four points of contact.

Improves mating retention
The positive-lock feature helps ensure secure mating for reliable contact.

Helps prevent terminal blackout
TPA retainers allow for secure and reliable connections that minimize unintended disengagement.

Provides additional strain relief
Mini-Fit Sr. connectors are double-crimp capable, relieving excessive tension with an extra layer of stability to the connection.