RL2007-44.5K-155-D1

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NTC thermistors, also known as negative temperature coefficient thermistors, are temperature-sensitive semiconductor devices which exhibit a large change in their electrical resistance when exposed to changes in temperature. The RL2007-44.5K-155-D1 is a type of NTC thermistor with a broad range of applications, including temperature sensing and temperature compensation. This article will explain the application field and working principle of this type of thermistor.

Application Field

The RL2007-44.5K-155-D1 thermistor can be used in a variety of applications, depending on its characteristics. It is suitable for use as a temperature sensor in air conditioning systems, as it is capable of accurately detecting ambient temperatures. It can also be used in circuit design to provide temperature compensation, helping to reduce errors caused by temperature fluctuations. Furthermore, the thermistor can be used in over-temperature protection systems to automatically shut off power to electrical components if they are exposed to excessive temperatures.

Working Principle

NTC thermistors work on the principle of semiconductor resistance. The RL2007-44.5K-155-D1 thermistor is composed of semiconductor materials in a bead shape. The thermistor has two terminals, one connected to the semiconductor material, and the other connected to an external power supply. When an electric current is passed through the thermistor, the resistance of the semiconductor material decreases with increasing temperature. Conversely, the resistance increases when the temperature decreases. This change in resistance is the basis for the thermistor’s temperature sensing capabilities.

The RL2007-44.5K-155-D1 thermistor also has a temperature coefficient, which describes the rate of change of the thermistor’s resistance with temperature. This coefficient is expressed as a negative value since the resistance decreases with increasing temperature. For the RL2007-44.5K-155-D1 thermistor, the temperature coefficient is -155 PPM/K, which means that the resistance decreases by 155 parts per million (PPM) per degree Kelvin. This thermistor has a wide operating temperature range from -55°C to +150°C.

In addition to temperature detection, the RL2007-44.5K-155-D1 thermistor can also be used as a temperature compensator. It can be connected to a circuit using a voltage divider network, with the thermistor and a fixed resistor connected in series between two voltage supplies. The thermistor’s resistance will vary with temperature, and as a result, the voltage ratio across the two supplies will vary proportionally. This allows the thermistor to change the overall gain of an electronic circuit in order to maintain its accuracy over a wide temperature range.

Conclusion

The RL2007-44.5K-155-D1 thermistor is a type of NTC thermistor with a variety of useful applications, such as temperature sensing, temperature compensation, and over-temperature protection. It works on the principle of semiconductor resistance, wherein its resistance varies with temperature. The thermistor has a wide temperature range from -55˚C to +150˚C and a temperature coefficient of -155PPM/K. This makes it an excellent choice for various temperature-sensing and temperature-compensation applications.

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