Micro-Miniature Connectors for SWaP-C Optimization

Harwin’s Gecko (G125 series) connectors provide a low profile, dual row interconnect solution, ideally suited for stacking and cable mating in areas where PCB real estate is at a premium.

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Gecko CAD drawing


Gecko brings high-reliability connection at a miniature 1.25mm pitch. Complete flexibility with assured performance under shock/vibration and temperature.

  • 2A per contact -

    All electrically loaded; 2.8A per individual contact

  • 4-finger Patented contact design -

    Maintaining contact through high vibration and shock

  • Beryllium copper contact

    Extended temperature range: -65°C to +150°C

  • 1,000 mating cycles

    Highly durable interconnect

  • Low outgassing

    Ideally suited for space, avionics and optronics

  • Assured signal integrity under extreme environments

    Vibration, shock and temperature resistance

  • Mate-before-lock or latches

    Quick and easy connections

  • Future-proofed materials

    Halogen-free, PFOS-free, SVHC-free and RoHS compliant

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Gecko Latch
Gecko with Latches

The original Gecko range features latching mechanisms on the male connectors, easy to release either by hand or with the Harwin-designed unlatching tools.

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Gecko-MT connectors provide the smallest, lightest mixed-technology connector with a low profile design, ideally suited for stacking and cable mating in areas where PCB real estate is at a premium.

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Gecko SL

Gecko-SL connectors are built with easy and fast “Mate-before-Lok” screw fixings. The connectors are fully mated before the captive screws need to be engaged.

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Size/Weight advantages

With space and weight a consideration for many high-reliability applications, Gecko-MT delivers a signal pin spacing of 1.25mm, and compact power pins. This design means that these connectors achieve significant space and weight saving over alternative high-performance connectors such as Combi Micro-D.

The diagram highlights the size savings of a 1+8+1 Gecko-MT over a comparable Combi Micro-D.


16-contact Gecko Screw-Lok (dark grey) overlaid with 15-contact Micro-D (light grey)


6-contact Gecko with Latches (dark grey) overlaid with 25-contact Micro-D (light grey)

* Patent Status: Granted US9017089, GB2501063, GB2548777

Our Ranges

Harwin is a world-leading specialist in reliable and high-performance technologies for demanding interconnection applications. Select one of the categories to find the right product for your design.

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