NCP15XW472J03RC

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NCP15XW472J03RC Temperature Sensors - NTC Thermistors

Introduction:

The NCP15XW472J03RC is a highly accurate End of Line (EOL) temperature sensor designed by ON Semiconductor, an American semiconductor manufacturer based in Arizona. This thermal device is a non-linear negative temperature coefficient (NTC) thermistor embedded in an epoxy package. It is used in many electrical and electronic products for controlling temperatures. The thermistor features a resistance value of 4.7 kΩ at 25°C and a working temperature range of -45°C to +125°C. It has a coefficient of resistance that varies proportionally with the temperature. This temperature coefficient and resistance of the NCP15XW472J03RC make it an ideal choice for temperature sensing applications in high reliability equipment including automotive systems.

Application Field

The NCP15XW472J03RC is mainly used in consumer electronics, instrumentation, and automotive, medical and instrumentation applications. It can be used to detect extreme temperatures in areas difficult to reach with traditional sensors. In automotive engine control systems, the thermistor can be used as an End of Line (EOL) switch to detect spark plug and oil temperatures. It can also be used for temperature compensation in many other systems.

Working Principle

The NCP15XW472J03RC is a NTC thermistor, meaning it is a non-linear resistor that changes its resistance value with temperature. It is composed of a ceramic capacitor material doped with a β-type semiconductor. As temperature increases, the resistance of the thermistor decreases. This largely depends on its type of semiconductor. In this case, its semiconductor material is made of Nickel-Cobalt (5% + 15%), which gives it a -2.7 rate of resistance change per °C. So, when the thermistor is exposed to heat, its resistance decreases.

The resistance can be measured directly in an external bridge circuit with the use of a steady DC current. When the temperature around the thermistor changes, the voltage across it also changes. This voltage is proportional to the temperature and can be used to detect the variation in heat. It is important to note that the NCP15XW472J03RC provides an output linearized to the ICCP (Indirect Calibrated Curve Propotional) formula. This means that it has a non-linear temperature-to-resistance curve but the output is linear.

Conclusion

The NCP15XW472J03RC is a highly precise End of Line (EOL) temperature sensor. Its application fields include consumer electronics, automotive, instrumentation, and medical applications. This NTC thermistor features a resistance value of 4.7 kΩ at 25°C and a working temperature range of -45°C to +125°C. It also has a coefficient of resistance which varies with the temperature. The thermistor can be used to detect extreme temperatures in hard to reach areas. The intensity of the voltage across the thermistor provides a proportional output to the temperature. Those features make the NCP15XW472J03RC a great choice for temperature sensing applications in high reliability gears and equipment.

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