CMFA3950473JNT

Series:	CMF
Packaging:	Tape & Reel (TR)
Part Status:	Active
Resistance in Ohms @ 25°C:	47k
Resistance Tolerance:	±5%
B Value Tolerance:	--
B0/50:	--
B25/50:	3950K
B25/75:	--
B25/85:	--
B25/100:	--
Operating Temperature:	-40°C ~ 125°C
Power - Max:	100mW
Length - Lead Wire:	--
Mounting Type:	Surface Mount
Package / Case:	0603 (1608 Metric)

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Introduction to CMFA3950473JNT Temperature SensorThe CMFA3950473JNT temperature sensor, part of the NTC thermistor family, is a device designed to detect changes in temperature. It is a circuit element that changes its resistive value with temperature, typically in a linear fashion between an upper and lower temperature limit. NTC (Negative Temperature Coefficient) thermistors are made of a semiconductor material, such as semiconductors having a higher resistance value when the surrounding temperature increases while having a lower resistance when the temperature declines.Applications of CMFA3950473JNT Temperature SensorThe CMFA3950473JNT temperature sensor is used widely in various industries and applications, including automotive, communications, and consumer electronics. In the automotive industry, for example, NTC thermistors are used in air-conditioning systems, climate control systems, and engine control systems. In these applications, these temperature sensors detect the temperature in the system and provide feedback to the control system or indicator light on the dashboard, telling the driver how warm or cold the environment is.NTC thermistors are also used in communication systems, such as in satellites and cell towers. Here, they measure the temperature of components located inside interconnected network boxes and provide information to the system for troubleshooting and maintenance purposes. In consumer electronics, NTC thermistors are found in laptop computers, mobile phones, and etc. In these applications, they are responsible for detecting the temperature, and providing feedback to the main board, which is used to adjust the performance settings of the device according to ambient temperature.Working principle of CMFA3950473JNT Temperature SensorThe working principle of the CMFA3950473JNT temperature sensor is simple to understand and can be attributed to the thermoelectric effect. A typical thermistor is made of semiconductor material with weak electrical connections between the particles, allowing an easily controllable amount of current to pass through. When the surrounding temperature changes, the resistance of the material also changes. For NTC thermistors, when the temperature increases, the resistance of the material increases, meaning less current can pass through. Conversely, when the temperature decreases, the resistance of the material decreases, meaning more current can pass through. This relationship is used by the temperature sensor to detect the temperature and provide feedback to the main board or control system.The way the temperature information is processed also depends on the application. In automotive, for example, the temperature sensor might be a voltage-divider circuit, which measures the voltage being divided across the voltages of the two resistors, one of which is the thermistor. This voltage is then processed by the microcontroller, which will then generate a signal to indicate the temperature in the system.In consumer electronics, the thermistor can be part of a Wheatstone bridge circuit, which works similarly to the voltage-divider circuit. The resistance value of the thermistor is compared to a calibrated resistor, and the difference between the two is used to calculate the temperature. ConclusionIn conclusion, the CMFA3950473JNT temperature sensor is a device typically used for detecting temperature in the automotive, communications, and consumer electronics industries. It makes use of the thermoelectric effect, in which the resistance of a semiconductor material changes with temperature. Depending on the application, a variety of branches such as voltage-divider and Wheatstone bridge circuits can be used to process the temperature information.

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