USP12838

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USP12838 Application field and working principle

USP12838 is a NTC (Negative Temperature Coefficient) thermistor, which belongs to the temperature sensors family. NTC thermistors are widely used in various industrial, automation and consumer applications. This article mainly focuses on the application field and operation principle of USP12838.

1.Application field

NTC thermistors belong to semiconductor temperature measurement sensing elements. USP12838 can be used in air conditioners, air conditioners controller, home appliances, automotive electronics HVAC, temperature control, and other kinds of temperature measurement fields. As a temperature-sensing element, USP12838 can resist the effects of temperature and humidity, and measure the temperature very accurately and quickly. It has a wide temperature range in practical applications (-40°C~+125°C). USP12838 is a good choice in corrosive medium environment.

2. Working Principle

USP12838 is a resistor-resistor type temperature sensor. It is made of metal oxide semiconductor. It mainly consists of chip body, chip electrodes and particle surface oxidation film. Its resistance value is extremely small (down to hundreds of ohms).NTC thermistors’ resistance values are largely changes with the temperature. When the temperature increases, the resistivity of the semiconductor decreases, so the resistance decreases. It follows the exponential expression: R = R_0exp(B/T), in which B is a constant, R_0 is the resistance value at T=25°C, and T is the absolute temperature.

In addition, USP12838 has very small errors in temperature measurement (typically ±0.1°C).Along with the improvement of auto-calibration technology ,USP12838’s calibration accuracy can be further improved. Thanks to its sizs and low power consumption, USP12838 can be applied in many varieties of applications. Therefore, USP12838 is widely used as a temperature measuring device in smart home, industry and automotive systems.

Conclusion

After introducing the application field and the working principle of USP12838, it can be concluded that USP12838 is a NTC (Negative Temperature Coefficient) thermistor, which belongs to the temperature sensors family. Its wide application temperature range, resistance stability and accuracy in temperature measurement make USP12838 a good choice in various industrial, automation and consumer applications.

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