Apr. 02, 2022
With the rapid development of science and technology, the application of thermistors is becoming more and more extensive. A thermistor is a sensor resistor whose resistance value changes with temperature. According to the different temperature coefficients, it is divided into positive temperature coefficient thermistors and negative temperature coefficient thermistors. The resistance value of the positive temperature coefficient thermistor increases with the increase of temperature, and the resistance value of the negative temperature coefficient thermistor decreases with the increase of temperature, and they both belong to semiconductor devices.
How the thermistor works:
The thermistor will be in an inactive state for a long time; when the ambient temperature and current are in the c zone, the heat dissipation power of the thermistor is close to the heating power, so it may or may not operate. When the ambient temperature is the same, the operating time of the thermistor is shortened sharply with the increase of the current; when the ambient temperature is relatively high, the thermistor has a shorter operating time and smaller holding current and operating current.
The main features of the thermistor are:
①High sensitivity, its temperature coefficient of resistance is more than 10 to 100 times larger than that of metal, and it can detect temperature change of 10-6 °C easily;
② Wide operating temperature range, normal temperature devices are suitable for -55℃～315℃, high temperature devices are suitable for temperatures higher than 315℃ (currently up to 2000℃), and low temperature devices are suitable for -273℃～-55℃;
③Small size, able to measure the temperature of voids, cavities and blood vessels in living organisms that cannot be measured by other thermometers;
④Easy to use, the resistance value can be arbitrarily selected between 0.1 ~ 100kΩ;
⑤It is easy to process into complex shapes and can be mass-produced;
⑥ Good stability and strong overload capacity.
Understanding the working principle and characteristics of the thermistor helps us better use the component. A good thermistor manufacturer can save you many problems. Dongguan Zhixu Electronic Co., Ltd. (also JYH HSU(JEC)) has engaged in the electronic component industry for many years, and our technical engineers can help you solve related problems. When purchasing varistors, you need to find out whether the products come from regular manufacturers. A good varistor manufacturer can reduce many unnecessary troubles.
JEC has over 30 years of manufacturing experience in the electronic components industry. If you have technical questions or need samples, please contact us.
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