MF51B332F3470

Temperature Sensors - NTC Thermistors

NTC thermistors are temperature-sensitive devices made of semiconductive materials whose electrical resistance is inversely proportional to temperature. MF51B332F3470 is one type of NTC thermistor which is composed of ceramic substrate and negative temperature coefficient. Generally speaking, this device is used to measure and detect temperature in a range of -20℃～100℃. The working principle of MF51B332F3470 is by measuring the decrease of the resistance of its semiconductor when the temperature increases.

Application Field

MF41B332F3470 has many application fields including automotive, computing, consumer electronics, and telecommunication. The device can be used as mini temperature sensor in vehicle ECUs to stabilize temperature, monitor and prevent over-heating. It can also be used in laptops/notejusts to maintain their system temperature inside a certain range. In consumer electronics, MF51B332F3470 is often utilized as temperature sensors to measure temperature of air conditioners, refrigerators, vending machines, and microwave ovens. As for telecommunication, the thermistor is often used as an important component in high-wake/state mode power supply to stabilize the parameter of system temperature.

Working Principle

MF51B332F3470 functions by measuring the decrease of the resistance of its semiconductor (ceramic substrate and negative temperature coefficient) when the temperature increases. When the device gives off signal to indicate a certain temperature, the resistance-temperature (R-T) curve will be slightly affected, and the ceramic substrate of the device also needs to have agreed pre-processed fixed points. The resistance changes in R-T curve can be indicated by the following relationship which is used for temperature calibration.

R = R_0 [1 + a*(T - T_0)]

Where R_0 is the resistance at calibration temperature T_0, and "a" (alpha) is a coefficient which is determined by the material of the thermistor.

Conclusion

In conclusion, MF51B332F3470 is a type of NTC thermistor that is used for temperature sensing, monitoring, and detecting in a range of -20℃～100℃. The device has major application fields including automotive, computing, consumer electronics, and telecommunication. Its working principle is based on the measurement of the decrease of the resistance of its semiconductor when the temperature increases.