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Gecko-MT Connectors

1.25mm Pitch High-Reliability Signal & Power

Harwin’s 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. Vibration and shock resistant, miniature but with additional 10A contacts.

About Gecko-MT

  • 2A per contact (all electrically loaded; 2.8A per individual contact) for signal, 10A max power options
  • 4-finger Patented* contact design to maintain electrical contact through high vibration and shock
  • Beryllium Copper contact for improved temperature range: -65°C to +150°C
  • 1,000 mating cycles durability
  • Weight and space saving over Combi Micro-D connector products
  • Future-proofed materials – halogen-free, PFOS-free, SVHC-free and RoHS compliant
  • Low outgassing properties – 0.68% TML, 0.01% CVCM, 0.26 WVR (Water Vapour Recovered)

Product Styles

  • Symmetrical contact configurations – Available as either 1+8+1 (1 power, 8 signal, 1 power) or 2+8+2 (2 power, 8 signal, 2 power).
  • Board-to Board, Cable-to-Board and Cable-to-Cable – Female connectors in cable or vertical PCB throughboard, Male connectors in cable or horizontal PCB throughboard. Also compatible with existing Metal Backshells, giving the option of shielded cable assemblies when used with external braiding.
  • Screw-Lok options – Built with easy and fast “Mate-before-Lok” screw fixings. Connectors are fully mated before the captive screws need to be engaged. The range includes both standard gender (floating screw on female connector) or reverse fix (floating screw on male connector).

Size/Weight Advantage

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 standard Gecko-SL connectors over Micro-D, and Gecko-MT has similar savings – the 16-contact Gecko-SL is the equivalent size as the 1+8+1 Gecko-MT.

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

Gecko is a focus product for Harwin, and is undergoing an active development program. The connectors are designed with automated assembly systems in mind – all PCB connectors can be purchased in Tape and Reel packaging.

* Patent Status: Granted US9017089, GB2501063, GB2548777

Technical Details

Materials

Female Contacts

High performance Beryllium Copper, Gold finish

Male Contacts

Copper Alloy, Gold finish

Housing

30% Glass-Filled High Temperature Nylon (Polyamide) 4T, rated to UL94V-0

Screw-Loks

Stainless Steel

Electrical

Current (signal)

2.8A max per individual contact, 2A max all contacts electrically loaded

Current (power)

10A max

Working Voltage

450V DC or AC peak (250V DC or AC peak at 70,000ft/21km/44mbar)

Maximum Voltage

600V DC or AC peak (350V DC or AC peak at 70,000ft/21km/44mbar)

Contact Resistance

25mΩ max

Insulation Resistance

1GΩ min

Environment

Operating Temperature

-65°C to +150°C

Humidity Classification

56 days at 93% RH

Vibration

10-2,000Hz, 1.5mm, 198m/s² (20G), 6 hours total

Shock

981m/s² (100G) in Z Axis, 490m/s² (50G) in X & Y Axis

Outgassing

0.68% TML, 0.01% CVCM,
0.26 WVR (Water Vapour Recovered)

Mechanical

Durability

1,000 mating cycles

Insertion force (per contact)

2.8N max for signal, 7.0N max for power

Withdrawal Force (per contact)

0.2N min

Wire Specification

Recommended Wire types (signal)

BS 3G 210 Type A, MIL-W-16878/6 type ET or NEMA HP3 type ET

Recommended Wire types (power)

M22759/11-18 PTFE (MIL-W-22759/11)

Wire Sizes

26 to 32 AWG signal, 18 AWG power

Insulation Diameter

Ø0.80mm max signal, Ø1.35mm max power

Strip Length

1.50 – 1.75mm signal, 1.90-2.30mm power

Downloads

Technical Documents

PDF

Component Specification (including pin numbering system)

Catalog Section

PDF

Gecko – complete section

Test Reports

PDF

Test Report HT030 – Gecko (G125 Series) – Electrical, Mechanical and Environmental

PDF

Test Report HT072 – Gecko-MT General (Electrical, Mechanical and Environmental)

Product Training

PDF

Gecko-MT – Product Training Module

Browse the Range

Gecko-MT
Cable Connector Parts

Cable housings and contacts, sold separately. See Accessories and Tooling for cable crimping and assembly tools.

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Gecko-MT
PCB Connectors

Board-mounted connectors in male and female options. Low profile, with standard gender or reverse fix screw-loks.

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Gecko-MT
Tooling & Accessories

Associated products and tooling for the Gecko-MT range.

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