120-501CAJ-P01

Temperature Sensors - NTC Thermistors

The 120-501CAJ-P01 is an example of a temperature sensor in the category of negatvet temperature coefficient thermistors (NTC). An NTC thermistor can be used in both environmental and industrial applications due to its ability to accurately measure temperature, even in extreme temperature ranges.

NTC thermistors are made of ceramic material and thermally sensitive semiconductors. They work by using an analogy of resistance in relation to temperature. The resistance will decrease with an increase in temperature. This decrease in resistance is the same for all types of thermistors, as each thermistor has a unique set of characteristics in which the resistance variation is predetermined.

Application Field

NTC thermistors can be effective in a variety of applications. In many industries, they are used to perform precise temperature measurement and control. NTC thermistors have the ability to serve as temperature sensors, temperature switches, temperature monitors, and more. Depending on the design of the thermistor, frequencies ranging from hertz to gigahertz can be realized.

The 120-501CAJ-P01 is usually deployed as an environmental temperature sensor, though it could certainly be used in industrial applications as well. Due to its small size and power usage efficiency,, the 120-501CAJ-P01 is particularly suited for residential heating/cooling systems, temperature-controlled baths, and more.

Working Principle

The working principle of NTC thermistors is relatively straightforward. When an electrical charge is applied to the thermistor, it acts as a resistor, and the resistance of the material changes depending on the temperature. This means that by measuring the resistance of a thermistor, one can accurately measure the temperature.

In the case of the 120-501CAJ-P01, it operates on the voltage divider principle. A voltage is applied across two points. A resistor is placed in between these two points. When the resistor is an NTC thermistor, the resistance of the thermistor will change in relation to the temperature. The output voltage is then measured and used to deduce the temperature.

Conclusion

The 120-501CAJ-P01 is one example of an NTC thermistor, as there is a wide range of NTC thermistors available with different characteristics for different temperature ranges. In either environmental or industrial settings, NTC thermistors are a reliable and accurate way of measuring temperature.