GH1.25mm JST Connector — Locking 1.25mm Pitch for Drones & Robotics
GH1.25mm JST Connectors — Secure Locking 1.25mm Pitch for Vibration-Prone Environments
The GH1.25mm series is JST's premium 1.25mm pitch connector family, distinguished from standard MX1.25mm by its integrated locking latch mechanism that prevents accidental disconnection under vibration, shock, and mechanical stress. This makes GH1.25mm the industry-standard connector for Pixhawk, CUAV, Cube Orange, and ArduPilot flight controllers, as well as robotics servo buses, precision sensor arrays, and any application where an unintended disconnect would be catastrophic.
Key Technical Specifications
- Pitch: 1.25mm (0.049")
- Wire gauge: 28AWG UL1571 (7×0.11mm stranded copper)
- Rated voltage: 300V DC/AC
- Rated temperature: –40°C to +80°C
- Locking mechanism: Integrated side-latch (GHR housing series)
- Pin count: 2P, 3P, 4P, 5P, 6P, 7P, 8P, 9P, 10P, 11P, 12P, 16P
- Mounting styles: Vertical SMT, Horizontal SMT (BM10B-GHS-TBT equivalent)
- Certifications: CE, RoHS
Complete Product Range in This Collection
This collection covers the full GH1.25mm ecosystem: pre-crimped single/double-head wire assemblies (10cm, 15cm, 20cm, 30cm), vertical and horizontal SMT wafer connectors (equivalent to JST BM10B-GHS-TBT and A1257 series), bulk crimp terminal wires without housing (colorful PVC insulation, 28AWG, single and double-head), adapter conversion cables (GH1.25 to MX1.25 / ZH1.5 / PH2.0 / XH2.54 / Dupont 2.54mm), and professional SN-03BM crimping tools for 0.08–0.14mm² terminals.
Ideal Applications
- Pixhawk 4, 6C, 6X, Pixracer — GPS, telemetry, I2C, UART, and power module connections
- CUAV X7, Cube Orange/Purple — peripheral sensor and payload wiring
- FPV drone camera, VTX, and OSD signal harnesses
- Robotics servo feedback and encoder wiring under vibration
- Industrial automation sensor buses requiring secure mating
- Automotive interior electronics and infotainment module connections
- Scientific instrumentation requiring tamper-resistant interconnects
GH1.25mm vs MX1.25mm — Which Should You Choose?
Both GH1.25mm and MX1.25mm share the same 1.25mm pitch and are often confused. The critical difference is the locking latch: GH housings (GHR series) feature a side-release latch that audibly clicks when mated and requires deliberate pressure to release. MX1.25mm has no latch and relies on friction alone. Choose GH1.25mm for any application subject to vibration, repeated mating cycles, or where accidental disconnection is unacceptable. Choose MX1.25mm for cost-sensitive, low-vibration applications where ease of disconnection is preferred.
GH1.25mm Connector Buying Guide
Step 1 — Confirm your flight controller pinout: Pixhawk-standard GH1.25mm ports are typically 4P (GPS), 6P (telemetry/UART), 4P (I2C), and 3P (buzzer/safety). Download your FC's pinout diagram before ordering.
Step 2 — Choose housing type: GHR (female housing, wire side) mates with BM-GHS (male SMT wafer, PCB side). Ensure you order the correct gender for your application.
Step 3 — Select cable length: For compact drone builds, 10–15cm is standard. For larger frames or external payload connections, 20–30cm provides routing flexibility.
Step 4 — Adapter cables: If you need to connect a GH1.25mm port to a Dupont 2.54mm breadboard or XH2.54mm device, use our GH1.25-to-Dupont adapter cables — available in 2P–6P configurations.
Why Choose Yoeruyo for GH1.25mm Connectors?
Yoeruyo stocks the complete GH1.25mm ecosystem — from raw crimp terminals and bulk wire to fully assembled, tested cable harnesses — all CE and RoHS certified. Our GH1.25mm housings and terminals are manufactured to JST GHR/BM-GHS dimensional tolerances, ensuring reliable mating with OEM flight controller ports. Bulk orders (100pcs+) are available with reel packaging for SMT wafers, and custom cable lengths or multi-connector harnesses can be arranged on request.
Frequently Asked Questions
Q: Are these connectors compatible with official JST GH series housings?
A: Yes. Yoeruyo GH1.25mm housings and terminals are manufactured to JST GHR and BM-GHS dimensional standards and mate correctly with genuine JST GH components.
Q: What Pixhawk ports use GH1.25mm connectors?
A: Pixhawk 4, 6C, 6X, and most ArduPilot-compatible flight controllers use GH1.25mm for GPS (4P or 6P), telemetry (6P), I2C (4P), UART (6P), buzzer (3P), and safety switch (3P) ports. Always verify with your specific FC's pinout documentation.
Q: Can I crimp GH1.25mm terminals myself?
A: Yes. The SN-03BM crimper (available in this collection) is the recommended tool for GH1.25mm terminals with 28AWG (0.08–0.14mm²) wire. Proper crimping requires both insulation and conductor crimp wings to be correctly formed.
Q: Do you offer pre-made Pixhawk wiring harness kits?
A: We offer individual cable assemblies in standard Pixhawk pin counts (3P, 4P, 6P). For complete harness kits, contact us with your FC model and payload requirements.
Q: What is the difference between GH1.25mm and SH1.0mm?
A: GH1.25mm has a larger 1.25mm pitch (vs 1.0mm for SH) and a locking latch. SH1.0mm is smaller and lighter, suited for ultra-compact builds. GH1.25mm is preferred for flight controllers due to its secure locking and wider industry adoption.
