Gecko SL 1.25 mm Pitch Connectors
Harwin's connector series offers maximum performance in a miniature package
Harwin's Gecko-SL range delivers high reliability with a smaller footprint and increased design flexibility. These connectors are an ideal choice for SWaP-C optimization (size, weight, power, and cost). They are up to 45% smaller and up to 75% lighter than existing industry-standard equivalents and Micro-D. Capable of withstanding extremes of shock, vibration, and temperature. Ruggedized screw-locks are made from stainless steel to ensure a strong and secure connection. The mate-before-lock design allows for fast and easy assembly in-house and in the field.
This connector series is available in a wide variety of configurations including cable-to-board, board-to-board, and cable-to-cable options in pin counts of up to 50. Recent additions to the range include horizontal male connectors and reverse-fix hardware options. Lightweight aluminum hoods deliver enhanced electrical continuity, cable protection, and effective EMI/RFI shielding. Pre-wired contacts are available for prototyping and pre-production.
- 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 to +150°C
- Withstand extreme shock (100 G, 6 ms) and vibration (20 G, 6 hrs)
- Moldings: glass-filled thermoplastic UL94V-0 (halogen and red phosphorus-free)
- Low outgassing materials
- Mate-before-lock stainless-steel jackscrews
- Three polarizing points to prevent mismating
- Potting wall feature
- No. 1 position identified on molding
- Metal backshell available to shield cable assemblies
- Flexible mating hardware options
- Space
- Satellites and CubeSats, radar communications, and launch systems
- Defense and security
- Unmanned vehicles, communications, portable equipment, and vehicle electronics
- Aviation
- Guidance systems, engine controls, radar, and tracking
- Communication and telemetry
- Navigation, AI, GPS and tracking equipment, and ERS controls
- High-end industrial
- Portable equipment, high vibration and robotics systems
Connector Housings
| Image | Manufacturer Part Number | Description | Available Quantity | Price | View Details | |
|---|---|---|---|---|---|---|
![]() | ![]() | G125-3245096M2 | CONN PLUG HSG 50POS 1.25MM | 5 - Immediate | $19,537.00 | View Details |
![]() | ![]() | G125-3241696M2 | CONN PLUG HSG 16POS 1.25MM | 92 - Immediate | $13,560.00 | View Details |
![]() | ![]() | G125-3241096M1 | CONN PLUG HSG 10POS 1.25MM | 291 - Immediate | $13,544.00 | View Details |
![]() | ![]() | G125-3241096M2 | CONN PLUG HSG 10POS 1.25MM | 57 - Immediate | $13,467.00 | View Details |
![]() | ![]() | G125-2241696F1 | CONN RCPT HSG 16POS 1.25MM | 7096 - Immediate | $19,753.00 | View Details |
Female Sockets
| Image | Manufacturer Part Number | Description | Available Quantity | Price | View Details | |
|---|---|---|---|---|---|---|
![]() | ![]() | G125-FV10605F1P | CONN RCPT 6POS 0.049 GOLD PCB | 600 - Immediate | $32,803.00 | View Details |
![]() | ![]() | G125-FV13405F3P | CONN RCPT 34POS 0.049 GOLD PCB | 88 - Immediate | $102,255.00 | View Details |
![]() | ![]() | G125-FS13405F3P | CONN RCPT 34POS 0.049 GOLD SMD | 270 - Immediate | $96,139.00 | View Details |
![]() | ![]() | G125-FS15005F3P | CONN RCPT 50POS 0.049 GOLD SMD | 262 - Immediate | $129,977.00 | View Details |
![]() | ![]() | G125-FS11605F3P | CONN RCPT 16POS 0.049 GOLD SMD | 628 - Immediate | $58,502.00 | View Details |
Male Headers
| Image | Manufacturer Part Number | Description | Available Quantity | Price | View Details | |
|---|---|---|---|---|---|---|
![]() | ![]() | G125-MV11605M1P | CONN HEADER VERT 16POS 1.25MM | 708 - Immediate | $22,811.00 | View Details |
![]() | ![]() | G125-MS13405M1P | CONN HEADER SMD 34POS 1.25MM | 157 - Immediate | $39,382.00 | View Details |
![]() | ![]() | G125-MS12005M1P | CONN HEADER SMD 20POS 1.25MM | 142 - Immediate | $33,637.00 | View Details |
![]() | ![]() | G125-MH12005M4P | CONN HDR 1.25MM R/A 20POS | 1125 - Immediate | $40,386.00 | View Details |
![]() | ![]() | G125-MH15005M4P | CONN HDR 1.25MM R/A 50POS | 973 - Immediate | $63,629.00 | View Details |
Jumper Wires Pre-Crimped Leads
| Image | Manufacturer Part Number | Description | Available Quantity | Price | View Details | |
|---|---|---|---|---|---|---|
![]() | ![]() | G125-MW10300F94 | 1.25MM M/F ON 26AWG 300MM | 0 - Immediate | See Page for Pricing | View Details |
![]() | ![]() | G125-MW10150M94 | 1.25MM M/M ON 26AWG 150MM | 0 - Immediate | See Page for Pricing | View Details |
![]() | ![]() | G125-MW10450L94 | 1.25MM M ON 26AWG 450MM | 0 - Immediate | See Page for Pricing | View Details |
![]() | ![]() | G125-MW10150F94 | 1.25MM M/F ON 26AWG 150MM | 0 - Immediate | See Page for Pricing | View Details |
![]() | ![]() | G125-FW10300F94 | 1.25MM F/F ON 26AWG 300MM | 0 - Immediate | See Page for Pricing | View Details |
Cable Assemblies
| Image | Manufacturer Part Number | Description | Available Quantity | Price | View Details | |
|---|---|---|---|---|---|---|
![]() | ![]() | G125-MC11205M1-0300F1 | CBL GECKO 1.25MM M-F 300MM 12POS | 0 - Immediate | See Page for Pricing | View Details |
![]() | ![]() | G125-FC15005F1-0450L | CBL GECKO 1.25MM F 450MM 50POS | 0 - Immediate | $369,992.00 | View Details |
![]() | ![]() | G125-MC13405M1-0150L | CBL GECKO 1.25MM M 150MM 34POS | 2 - Immediate 35 - Marketplace | $125,690.00 | View Details |
![]() | ![]() | G125-FC11605F0-0450L | CBL GECKO 1.25MM F 450MM 16POS | 35 - Immediate | $128,896.00 | View Details |
![]() | ![]() | G125-FC11005F1-0150F1 | CBL GECKO 1.25MM F-F 150MM 10POS | 63 - Immediate | $152,432.00 | View Details |
Contacts
| Image | Manufacturer Part Number | Description | Available Quantity | Price | View Details | |
|---|---|---|---|---|---|---|
![]() | ![]() | G125-0010005 | CONN SOCKET 26AWG CRIMP GOLD | 146625 - Immediate | $2,409.00 | View Details |
![]() | ![]() | G125-0020005 | CONN SOCKET 28-32AWG CRIMP GOLD | 380125 - Immediate | $2,409.00 | View Details |
![]() | ![]() | G125-1010005 | CONN PIN 26AWG CRIMP GOLD | 67061 - Immediate | $1,915.00 | View Details |
![]() | ![]() | G125-1020005 | CONN PIN 28-32AWG CRIMP GOLD | 14399 - Immediate | $1,915.00 | View Details |
Tools
| Image | Manufacturer Part Number | Description | Available Quantity | Price | View Details | |
|---|---|---|---|---|---|---|
![]() | ![]() | G125-4520000B | BOLT FOR PNL/PCB MNTGECKO CONN | 8620 - Immediate | $1,714.00 | View Details |
![]() | ![]() | G125-4510000B | NUTSLOTSTNLESSTEEL M2X0.4 1=1PC | 0 - Immediate | $1,977.00 | View Details |
![]() | ![]() | G125-4500000B | NUTHEX STNLESSSTEEL M2X0.4 1=1PC | 9726 - Immediate | $819.00 | View Details |
![]() | ![]() | Z125-900 | TOOL HAND CRIMPER 26-32AWG SIDE | 77 - Immediate | $2,640,028.00 | View Details |
![]() | ![]() | Z125-901 | CRIMP CONTACT POSITIONER G125 | 54 - Immediate | $728,602.00 | View Details |
![]() | ![]() | Z125-902 | G125 CRIMP INS/REMOV TOOL KIT | 348 - Immediate | $156,031.00 | View Details |
![]() | ![]() | Z80-298 | SCREW DRIVER TOOL FOR J-TEK | 81 - Immediate | $118,471.00 | View Details |
Accessories
| Image | Manufacturer Part Number | Description | Available Quantity | Price | View Details | |
|---|---|---|---|---|---|---|
![]() | ![]() | G125-96420F1 | HOOD FOR CBL MNT GECKO SL 20POS | 0 - Immediate | $177,560.00 | View Details |
![]() | ![]() | G125-9642600 | HOOD FOR CBL MNT GECKO SL 26POS | 0 - Immediate | $185,884.00 | View Details |
![]() | ![]() | G125-96434F1 | HOOD FOR CBL MNT GECKO SL 34POS | 138 - Immediate | $196,957.00 | View Details |
![]() | ![]() | G125-9645000 | HOOD FOR CBL MNT GECKO SL 50POS | 4 - Immediate | $202,980.00 | View Details |
![]() | ![]() | G125-9642000 | HOOD FOR CBL MNT GECKO SL 20POS | 2 - Immediate | $176,602.00 | View Details |












































