B57227K112J3

NTC thermistors are common temperature sensors that measure the temperature of a environment or the surface temperature of a material. Model code B57227K112J3 is a bimetallic NTC thermistor from EPCOS, part of TDK group. It is an ultrasound sensing component made of a metal alloy disc with an outside diameter of 10 mm and a thermal resistance of 4400 ohms.

Application Fields of B57227K112J3

B57227K112J3 are mainly used for various temperature monitoring and regulation systems. Their low thermal resistance and small sizes make them ideal temperature sensors for multiple small-scale projects. Their porperties are also applicable in different fields like temperature data logging, heating management, and product immunity testing.

Since these thermistors are non-linear devices, they sensitively respond to changes in temperature. This makes them suitable when precision is required for accuracy. They may be advantageous over other sensing components in many industrial applications like temperatures of motors in automotive industries, surface conditions of printing and paper production systems as well as in industrial processes.

Working Principle of B57227K112J3

The basic idea behind the working of a NTC thermistor is that its resistance keeps changing with increasing temperature. B57227K112J3 are bimetallic type, which is made of two different metal layers. Both layers have different thermistor coefficient of expansion, resulting in a change in resistance when heated or cooled.

The principle of thermistor is simple, but the characteristics of these sensors are quite intricate. Thermistors undergo a significant increase in their resistivity if the temperature drops below the characteristic Curie temperature. Generally, the sensitivity of NTC thermistors increases by a factor of three for a 10 degree celsius in temperature drop. This makes them ideal temperature sensors in various industries, especially in environments where fast and precise response is required.

Conclusion

Model code B57227K112J3 is a bimetallic NTC thermistor from EPCOS, part of TDK group. It is mainly used for temperature monitoring and regulation systems and has a thermal resistance of 4400 ohms. It is a non-linear device that sensitively responds to changes in temperature. The basic idea behind the working of a NTC thermistor is that its resistance keeps changing with increasing temperature. And its sensitivity increases by a factor of three for a 10 degree drop in temperature.