Mini-Fit® power connectors

The Mini-Fit® Family is designed for higher-current / higher-density applications which require design flexibility for wire-to-wire, wire-to-board and board-to-board configurations. Mini-Fit products are ideal for power applications up to 13.0A per circuit.

The core attributes of the Mini-Fit family include: an operating temperature of -40 to +105°C, fully isolated terminals, positive housing locks, low-engagement forces and polarized housings and receptacles. Mini-Fit products are UL recognized and CSA approved. All components are lead-free and RoHS compliant.

The family includes:


Molex Mini-Fit® Power Connectors

Mini-Fit® connectors are part of the FiT Family connector range, designed to solve the electrical and mechanical design challenges created by the growing demand for more power in increasingly smaller packages.

Explore the full range, or request a free FiT sample kit for your application design:

Molex Fit Family Kit

Mini-Fit Jr.™ Connectors handle up to 9.0A and are ideal for wire-to-wire and wire-to-board applications requiring design flexibility.

The core attributes of Mini-Fit Jr. include: fully isolated terminals, positive locking housings, low-engagement forces and polarized housings. The Mini-Fit family also offers blind mating, TPA and higher current options.

Designed for higher-current, higher-density applications requiring design flexibility, Mini-Fit Jr. connectors are ideal for power applications up to 9.0A per circuit. Additionally, these connectors are available in single row or dual row 2- to 24-circuit options, feature multiple plating, and resin options.

Mini-Fit® Blind Mate Interface (BMI) Connectors support up to 13.0A for high-current and high-density applications in wire-to-wire, wire-to-board and board-to-board applications.

Mini-Fit® BMI connectors allow misalignment and provide "float" of up to 2.54mm between mating surfaces for easy blind-mate connections. In addition, the connectors utilise both the Mini-Fit Jr. and high current Mini-Fit Plus female and male crimp terminals to support up to 9.0A or 13.0A.

Mini-Fit BMI panel-mount receptacles are designed to float or self-align. The headers and plugs feature flanges that help to "gather" the mating receptacle. Many options are offered including: through-hole, press-fit or SMC headers; tin or gold terminals; and multiple resin options to support the changing needs of manufacturing.

Mini-Fit® TPA Plugs and Receptacles handle up to 13.0A and are ideal for high-current applications requiring a redundant terminal retention feature.

Mini-Fit® TPA plugs and receptacles utilize a highly visible "TPA pin" that indicates when a terminal is fully seated in the housing and ensures that the terminal will not back out of the housing during mating or when in use. Mini-Fit TPA connectors feature a connector position assurance (CPA) key, ensuring that the male and female connectors cannot be accidentally disengaged. The Mini-Fit TPA product family accepts all standard Mini-Fit crimp terminals, further reducing design and qualification efforts. Mini-Fit TPA products are available in wire-to-wire and wire-to-board configurations, with various circuit sizes ranging from 2- to 16-position accommodating 16 to 28 AWG.

Delivering up to 13.0A, the Mini-Fit® Plus 4.20mm pitch connector system increases power delivery for high-current applications in virtually any industry without increasing design footprints.

The Mini-Fit® Plus system offers a high-current, power-dense, mid-range power connection system. The Mini-Fit Plus system leverages the same housings, PCB footprint and application tooling as Mini-Fit Jr.™ and Mini-Fit BMI systems.

With the launch of the Mini-Fit Plus high-conductive terminal, customers can increase power carrying capabilities while leveraging the extensive Mini-Fit Jr.™ product portfolio.

The Mini-Fit Plus system consists of crimp terminals, headers and PCB receptacles; 13.0A per circuit can be achieved using 16 AWG wire. Mini-Fit Plus terminals can be used with all existing Mini-Fit plug and receptacle housings. In addition, all standard Mini-Fit right-angle headers are inherently Mini-Fit Plus compatible, as they feature a solid-pin construction which is designed to handle high current.



Features Applications

Mini-Fit Jr.™

  • Fully isolated terminals
    • Protects terminals against potential damage during handling.
  • Positive locking housings
    • Easy to operate thumb latch assures connectors are fully mated. Positive locking prevents accidental unmating.
  • Polarised mating geometry
    • Ensures header and receptacle cannot be mismated.
  • Scoop-proof housings
    • Ensures terminals and header pins are not damaged if parts are mated at a severe angle
  • Receptacles and plugs accept standard Mini-Fit and Mini-Fit Plus crimp terminals
    • Reduces the number of part numbers to purchase and inventory
  • Available in UL94V-0, V-2, 265°C reflow, Glow-Wire and Low-Halogen compliant materials
    • Ideal for many applications to meet global material requirements

Mini-Fit® BMI™

  • Blind mating interface
    • Allows 2.54mm misalignment in x and y axis for all configurations
  • Available in WTW, WTB and BTB configurations
    • Supports a range of applications
  • Self aligning interface
    • Enables operator to mate connectors in hard to reach areas
  • Integrates Mini-Fit Jr. and Mini-Fit Plus terminal system
    • Uses proven power interface with widely used application tooling
  • Through hole, press fit and SMC manufacturing options
    • Provides solutions for multiple manufacturing processes

Mini-Fit® TPA

  • TPA pin inserts into plug and receptacle housings
    • Ensures terminals are fully seated and will not back out
  • Available in wire-to-wire and wire-to-board applications
    • Provides design flexibility
  • Headers are available in vertical and right-angle configurations, with mounting pegs or with screw-mount flanges
    • For every application
  • Available CPA key
    • Prevents accidental unmating
  • Accepts standard Mini-Fit crimp terminals
    • Reduces parts and inventory
  • Optional plug panel mounting ears
    • Used with Mini-Fit TPA plugs to accommodate panel-mounting applications

Mini-Fit® Plus

  • Crimp terminals are produced from a proprietary, high-current alloy
    • Rated up to 13.0A per circuit
  • Terminals feature a patented, elongated dimple design
    • Provide long wipe lengths and increased contact area for improved long-term reliability
  • Mini-Fit® Plus terminals are used in existing Mini-Fit Jr.™ header housings and Mini-Fit receptacles and plugs
    • Leverages the extensive features already offered by the Mini-Fit product portfolio
  • Crimp terminals are compatible with existing Molex crimp tooling
    • No new application tooling is required
  • Advanced crimp design
    • Meets the latest industry requirement A620 as defined by the Institute of Printed Circuits and the Wiring Harness Manufacturers Association
  • Select series offer up to 1500 mating cycles with gold terminals; standard series support 100 mating cycles with gold plated terminals; 75 mating cycles with tin plated terminals
    • Ideal for applications requiring a high number of mating cycles
  • Select color options include white and black
    • To differentiate between multiple harness connections


  • Consumer
    • White goods
  • Data/Communications
    • Office equipment
  • Industrial
    • Automation equipment
    • Industrial networks
  • Networking
    • Rack-mount server
    • Router/Switch


*This is not a definitive list of applications for this product. It represents some of the more common uses.

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