On-Board Charger EV Charger Temperature Sensor 10kohm NTC Thermistor
This temperature sensor is designed for use in on-board chargers, providing accurate temperature measurements to ensure safe and efficient charging. It features a resistance value of 10K ohms at 25°C with a tolerance of ±1%, and a beta value of 3950K at 25/50°C with a tolerance of ±1%. The sensor includes a ring lug Cu/Sn probe, XLPE parallel wire, a glass fiber tube, and a Molex connector.
Resistance Value
- R25ºC: 10KΩ ± 1%
- At a standard temperature of 25°C, the sensor has a resistance value of 10 kiloohms with an accuracy of ±1%. This high precision ensures reliable temperature readings crucial for effective thermal management in chargers.
Beta Value
- B25/50: 3950K ± 1%
- The beta value, which represents the change in resistance per degree Celsius, is 3950K at temperatures between 25 and 50°C. A beta value of this magnitude indicates that the sensor's resistance changes significantly with temperature, allowing for precise temperature measurements.
Probe
- Ring Lug Cu/Sn
- The probe is made of copper (Cu) and tin (Sn) alloy, providing excellent electrical conductivity and corrosion resistance. The ring lug design facilitates easy installation and secure connection.
Wire
- XLPE Parallel Wire UL4413 26AWG
- The sensor uses XLPE (Cross-Linked Polyethylene) parallel wire, which is known for its superior insulation properties and durability. The wire gauge is 26AWG, making it suitable for handling currents typical in charger applications while ensuring minimal voltage drop and signal loss.
Tube
- Glass Fibre Tube
- The sensor is encased in a glass fibre tube, offering robust protection against mechanical stress and environmental factors such as moisture and temperature fluctuations. Glass fibre also provides excellent dielectric strength, preventing electrical interference.
Connector
- Molex Connector
- The Molex connector ensures a reliable and secure connection between the sensor and the charger circuitry. Molex connectors are widely recognized for their quality and ease of use, making them ideal for automotive and industrial applications.
Resistance value |
R25ºC=10KΩ±1% |
Beta value |
B25/50=3950K±1% |
- On-Board Charger
- This temperature sensor is specifically designed for integration into on-board chargers, where it monitors the temperature of batteries during the charging process. Accurate temperature sensing is vital to prevent overcharging, overheating, and potential battery damage, thereby enhancing the safety and longevity of the battery pack.




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