B57311V2221J60 Sensors, Transducers

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Obsolete
Resistance in Ohms @ 25°C:	220
Resistance Tolerance:	±5%
B Value Tolerance:	±3%
B0/50:	--
B25/50:	3500K
B25/75:	--
B25/85:	3540K
B25/100:	3550K
Operating Temperature:	-55°C ~ 125°C
Power - Max:	180mW
Length - Lead Wire:	--
Mounting Type:	Surface Mount
Package / Case:	0603 (1608 Metric)

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Temperature Sensors – NTC Thermistors

The B57311V2221J60 is a long-term reliable device consisting of an NTC thermistor housed in a robust epoxy package. Designed for harsh environments, it utilizes a voltage divider configuration to measure small changes in temperature. Here, we’ll discuss the application field and working principle of the product.

Application Field

The B57311V2221J60 is mainly used in applications where precision temperature measurement is required. The product is excellent for use in electric motors, where accurate temperature data is essential to avoid motor over-heating. Its robust epoxy package makes it suitable for use in wet, dirty and corrosive environments, as well as extreme temperature settings.The product is also often used in the electrical heating industry, where accurate temperature measurement is essential for controlling the heat leaking from electrical heating systems. Additionally, it is often used in indoor air conditioning systems, coolers, boilers and other thermal engineering equipment, where temperature measurement is paramount.

Working Principle

The B57311V2221J60 product works via a resistance-based temperature monitoring system, which utilizes a voltage-divider and comparison method.It consists of an NTC thermistor, which is a resistor whose resistance decreases with temperature, wired in series with a constant resistor. Since the two elements have different resistances, when temperature rises, the resistance of the thermistor decreases, thereby affecting the voltage divider ratio of the two resistances.A voltage divider is formed by placing two resistors in series. The voltage division ratio is directly proportional to the resistance ratio of the two resistors. When the thermistor resistance decreases with increasing temperature, the ratio of the thermistor’s resistance to the constant resistor’s resistance also decreases, leading to an increase in the output voltage.This output voltage is then compared with a reference voltage. A comparator circuit measures and compares the two voltages and outputs anvalue depending on which is higher. This data can then be used to measure the temperature.

Conclusion

In conclusion, the B57311V2221J60 is a precision temperature sensor that utilizes a voltage-divider and comparison method to measure small changes in temperature. It is mainly used in applications such as electric motors, electrical heating systems, air conditioning systems and other thermal engineering equipment.

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