Connector Wire To Wire

C1251: 1.25mm Pitch Connector Wire to Wire

Sixteen Circuits on a 1.25mm Inline Interface

The C1251 series covers 2 to 16 positions on a 1.25mm pitch. Sensor, display and low-power harnesses combine all required conductors in one narrow connection instead of dividing them across several larger plugs.

Molex 1.25-Compatible Mating Geometry

The plug, receptacle and crimp-terminal interface matches the Molex 1.25 connection format. Existing harness drawings and mating assemblies remain unchanged when the connector is qualified as a second source.

1A Contact Path Rated to +105°C

Each circuit carries 1A at 125V AC/DC with contact resistance limited to 20mΩ, 500V AC dielectric strength and at least 100MΩ insulation resistance. The connection retains defined electrical performance from -25°C to +105°C.

Pitch	1.25mm
Rated Current	1A AC/DC
Rated Voltage	125V AC/ DC
Insulation Resistance	≥100MΩ
Contact Resistance	≤20mΩ
Withstand Voltage	500V AC/minute
Temperature Range	-25℃ ～ +105℃

Application Scenarios

• Smart Wearable Devices: Used for connections between main boards and sensor modules in smartwatches, as well as between display modules and batteries in smart glasses, offering optimal space utilization and PCB-free wiring.

• Miniature Consumer Electronics: Suitable for connections between TWS earphone charging cases and earphone batteries, as well as internal module connections in portable voice recorders and translation pens, supporting ultra-fine wires and multi-circuit transmission.

• Industrial Micro Sensor Nodes: Ideal for MEMS pressure and acceleration sensor signal transmission, as well as wiring connections for miniature photoelectric switches and proximity sensors, enabling multi-signal transmission with flexible, boardless wiring.

• Maker and Open-Source Hardware: Supports miniature expansion module connections for Arduino and Raspberry Pi platforms, internal wiring for miniature robots and model aircraft, and offers compatible replacement and rapid assembly.

• Medical Micro Devices: Applicable to portable blood glucose monitor test strip interfaces and mainboard connections, as well as internal wiring for miniature temperature and ECG patches, ensuring stable signal transmission and high reliability.

The core manufacturing base provides full coverage of all production processes. The injection molding workshop is equipped with high-precision automated injection molding machines, the stamping workshop operates clusters of high-rigidity precision stamping equipment, and the assembly workshop is equipped with multiple intelligent automated assembly lines. These lines complete key processes such as terminal crimping and component assembly while integrating online inspection modules.

Industry-standard packaging solutions are adopted. Products are neatly packed in dedicated cartons according to specifications and secured on pallets. They should be stored in clean, dry, light-proof warehouses with minimal temperature and humidity fluctuations.

Flexible transportation methods are available. During transportation, care should be taken to prevent contact between packaging and sharp objects and to ensure safe and environmentally compliant loading and unloading.

Throughout the entire R&D and manufacturing process, JKUN ensures product compliance, quality stability, and technological differentiation through comprehensive certification systems and independent patent portfolios. The company has obtained multiple authoritative certifications, including IATF 16949, ISO 9001, ISO 14001, ISO 45001, and GB/T 27922-2011, and holds multiple utility model patents, establishing a full-process quality control system that guarantees product quality and technical advantages.