MX1.25mm Molex Connector — 1.25mm Pitch Micro-Fit Wire & Housing
MX1.25mm Molex-Compatible Connectors — High-Density 1.25mm Pitch for Compact PCB Assemblies
The MX1.25mm series (dimensionally compatible with Molex Pico-EZmate and JST GH series) operates at a 1.25mm pitch, striking the ideal balance between miniaturization and current-carrying capacity. These connectors are the go-to choice for LiPo battery leads, drone ESC signal wiring, compact sensor modules, and high-density PCB-to-wire interconnects where SH1.0mm is too fine but standard 2.0mm connectors are too bulky.
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
- Contact resistance: ≤20mΩ
- Insulation resistance: ≥1000MΩ
- Pin count: 2P, 3P, 4P, 5P, 6P, 7P, 8P, 9P, 10P, 11P, 12P
- Mounting styles: Straight DIP, Right-Angle DIP, Vertical SMT, Horizontal SMT
- Certifications: CE, RoHS
Complete Product Range in This Collection
This collection covers the full MX1.25mm ecosystem: pre-crimped single/double-head wire assemblies (10cm, 15cm, 20cm, 30cm, same-direction and reverse-direction), SMT and DIP wafer connectors (straight, right-angle, vertical SMT, horizontal SMT — reel-packaged for qty ≥500pcs for automated pick-and-place), adapter conversion cables (MX1.25 to SH1.0 / ZH1.5 / PH2.0 / XH2.54), bulk crimp terminal wires without housing for custom harness builds, and professional crimping tools (SN-03BM, SN-01BM compatible with 0.08–0.14mm² wire cross-section).
Ideal Applications
- LiPo and Li-ion battery connector leads for RC aircraft, FPV drones, and quadcopters
- Pixhawk, CUAV, Cube, and ArduPilot flight controller peripheral wiring
- Compact motor driver and ESC signal harnesses
- Raspberry Pi HAT, Arduino shield, and ESP32 module peripheral connections
- Industrial sensor and actuator wiring in space-constrained enclosures
- Medical device and wearable electronics interconnects
- Robotics servo and encoder feedback wiring
MX1.25mm Connector Buying Guide — How to Choose the Right Configuration
Step 1 — Determine pin count: Count the number of signals or power rails you need to connect. MX1.25mm is available from 2P to 12P. For battery connections, 2P (positive + negative) is standard. For flight controller telemetry, 4P–6P is typical.
Step 2 — Choose termination style: If you are connecting a PCB to a wire harness, you need a wafer (male housing on PCB) paired with a female housing on the wire. If you need board-to-board, use SMT wafers on both sides with a double-head cable assembly.
Step 3 — Select cable length: For internal drone or RC builds, 10–15cm is usually sufficient. For bench testing or longer routing paths, 20–30cm provides flexibility. Custom lengths are available on request.
Step 4 — Mounting angle: Straight DIP is best for vertical PCB edge connectors. Right-angle DIP suits horizontal board layouts. SMT (vertical or horizontal) is required for reflow soldering in automated assembly lines.
Why Choose Yoeruyo for MX1.25mm Connectors?
Yoeruyo sources directly from certified manufacturers in mainland China, applying CE and RoHS compliance across the entire connector range. Every wire assembly undergoes continuity testing before shipment. We stock the complete MX1.25mm ecosystem — housings, terminals, wafers, cables, and crimping tools — so you can source everything from a single supplier and eliminate compatibility guesswork. Bulk orders (100pcs+) are available with reel packaging for SMT components, and custom cable lengths or wire gauges can be arranged on request.
Frequently Asked Questions
Q: Are Yoeruyo MX1.25mm connectors compatible with Molex Pico-EZmate and JST GH housings?
A: Yes. The MX1.25mm pitch is dimensionally equivalent to both Molex Pico-EZmate and JST GH series. Yoeruyo housings and terminals mate correctly with OEM Molex and JST components of the same pitch and pin count.
Q: What is the difference between MX1.25mm and GH1.25mm?
A: Both share a 1.25mm pitch, but GH1.25mm (JST GH series) features a locking latch mechanism for more secure mating, making it preferred for vibration-prone environments like drones. MX1.25mm is a general-purpose 1.25mm pitch connector without a latch. Check the product listing to confirm which variant you need.
Q: Can I use these connectors for LiPo battery connections?
A: Yes, 2P MX1.25mm connectors are widely used for small LiPo cells (1S–2S) in micro drones and RC models. For higher current applications (≥1A continuous), verify the wire gauge and contact rating before use.
Q: Do you offer custom cable lengths?
A: Yes. Standard lengths are 10cm, 15cm, 20cm, and 30cm. Custom lengths (5cm to 100cm+) are available for bulk orders. Contact us with your specifications.
Q: What crimping tool is compatible with MX1.25mm terminals?
A: The SN-03BM and SN-01BM crimpers are compatible with MX1.25mm terminals for 0.08–0.14mm² (28–26AWG) wire. Both are available in this collection.
