Gecko High-Reliability Connectors

1.25 mm pitch, high-reliability/high-performance connector system from Harwin

Image of Harwin's Gecko High-Reliability ConnectorsHarwin's Gecko (G125) series is a 1.25 mm pitch, high-reliability/high-performance connector system that is suited for use in environments with high vibration, shock, and extreme temperatures.

With space and weight a consideration for many high-reliability applications, G125 connectors are designed to offer high performance in a miniature package. This design means that G125 connectors achieve a 35% space saving over other high-performance connectors such as Micro-D. Through-hole and SMT options available. Available in board-to-board, wire-to-board and wire-to-wire configurations.

Video – Harwin Gecko Crimping Process


  • 2.8 A per contact in isolation and 2.0 A all contacts simultaneously
  • Four-finger beryllium copper contact design for high reliability
  • Durability: 1,000 operations
  • Operational temperature -65°C/+150°C
  • Shock severity Z axis 100 g 6 ms
  • Moldings: Glass-filled thermoplastic UL94V-0 (Halogen and Red Phosphorus-free)
  • 3 polarizing points to prevent mis-mating
  • Potting wall feature
  • Easy-to-release latches require no tooling
  • No. 1 position identified on molding

Gecko (G125) Connectors

ImageManufacturer Part NumberDescriptionAvailable QuantityView Details
G125-1010005 datasheet link1.25MM M CONTACT 26AWGG125-10100051.25MM M CONTACT 26AWG6855 - Immediate
G125-1010005 product page link
G125-1020005 datasheet link1.25MM M CONTACT 28-32AWGG125-10200051.25MM M CONTACT 28-32AWG5201 - Immediate
G125-1020005 product page link
G125-0010005 datasheet link1.25MM F CONTACT 26AWGG125-00100051.25MM F CONTACT 26AWG91765 - Immediate
G125-0010005 product page link
G125-0020005 datasheet link1.25MM F CONTACT 28-32AWGG125-00200051.25MM F CONTACT 28-32AWG14108 - Immediate
G125-0020005 product page link
G125-2042696L0 datasheet link1.25MM F HSG 2X13 POSG125-2042696L01.25MM F HSG 2X13 POS307 - Immediate
G125-2042696L0 product page link
G125-3041296L4 datasheet link1.25MM M HSG 2X6 POS LATG125-3041296L41.25MM M HSG 2X6 POS LAT196 - Immediate
G125-3041296L4 product page link
G125-2041296L0 datasheet link1.25MM F HSG 2X6 POSG125-2041296L01.25MM F HSG 2X6 POS556 - Immediate
G125-2041296L0 product page link
G125-2041696L0 datasheet link1.25MM F HSG 2X8 POSG125-2041696L01.25MM F HSG 2X8 POS804 - Immediate
G125-2041696L0 product page link
G125-2042096L0 datasheet link1.25MM F HSG 2X10 POSG125-2042096L01.25MM F HSG 2X10 POS724 - Immediate
G125-2042096L0 product page link
G125-3041696L0 datasheet link1.25MM M HSG 2X8 POSG125-3041696L01.25MM M HSG 2X8 POS159 - Immediate
G125-3041696L0 product page link
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Related Products

ImageManufacturer Part NumberDescriptionAvailable QuantityView Details
Z125-901 datasheet linkCRIMP CONTACT POSITIONER G125Z125-901CRIMP CONTACT POSITIONER G12529 - Immediate
Z125-901 product page link
Z125-902 datasheet linkG125 CRIMP INS/REMOV TOOL KITZ125-902G125 CRIMP INS/REMOV TOOL KIT51 - Immediate
Z125-902 product page link
Z125-900 datasheet linkTOOL HAND CRIMPER 26-32AWG SIDEZ125-900TOOL HAND CRIMPER 26-32AWG SIDE7 - Immediate
Z125-900 product page link
Published: 2014-03-19