112-202EAJ-B01

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Temperature sensors are essential components used in many different industries for temperature monitoring, control, and regulation. In this article, we will take a look at the 112-202EAJ-B01 NTC thermistor temperature sensor from Vishay and its application fields and working principles.

What is a NTC Thermistor

NTC thermistors, also known as Negative Temperature Coefficient thermistors, are solid-state temperature sensors comprised of two parts, a ceramic body and a semiconductor material. NTC thermistors have a unique property where the electrical resistance of the device changes with variations in temperature. Because the RT (resistance versus temperature) curve of a thermistor is non-linear, they are not used to measure absolute temperature, but rather to detect changes in temperature.

The 112-202EAJ-B01 Temperature Sensor

The 112-202EAJ-B01 is a small-sized NTC thermistor developed by Vishay and is a commonly used temperature sensor in many industrial applications. It is a 2-pin surface-mount component measuring 1.9 x 1.6 x 0.87 mm3 with a resistance of 20kΩ at 25°C. It has a power dissipation rating of 0.44 mW with a linear temperature coefficient of -3.6%/°C.

Application Fields

The application fields of the 112-202EAJ-B01 are broad due to its small size and accurate measurements. It is ideal for use in many consumer electronics applications such as laptops, computers, and hand-held devices. It can also be used in industrial applications such as HVAC systems, refrigeration, and automotive systems. Additionally, this specific NTC thermistor is widely used in temperature compensation circuits, load switches, and voltage regulators.

Working Principle

The working principles of NTC thermistors are relatively simple. When a temperature change is detected by the thermistor, its resistance changes. This change in resistance causes the voltage drop across the resistor to change, which can be used to determine the current temperature. In order to accurately determine the temperature readings, the resistance-temperature equation of the thermistor is usually used in conjunction with other components such as resistors, capacitors, and electronic amplifiers.

Conclusion

The 112-202EAJ-B01 NTC thermistor temperature sensor is a small, yet powerful component designed to accurately measure changes in temperature. Its broad application fields and simple operating principle make it an ideal choice for a variety of temperature monitoring applications.

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