KW222J2

Series:	KW
Packaging:	Bulk
Part Status:	Active
Resistance in Ohms @ 25°C:	2.252k
Resistance Tolerance:	±0.5°C
B Value Tolerance:	--
B0/50:	3892K
B25/50:	--
B25/75:	--
B25/85:	--
B25/100:	--
Operating Temperature:	120°C
Power - Max:	30mW
Length - Lead Wire:	1.50" (38.00mm)
Mounting Type:	Free Hanging
Package / Case:	Bead, Epoxy

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Temperature Sensors - NTC Thermistors

NTC thermistors are commonly used temperature sensors and one type of them is KW222J2. It is mainly used for temperature measurement and switching purposes.

Features and Benefits of KW222J2

KW222J2 has many beneficial features. It is a chip size thermistor with a high accuracy of ±1°C. It is temperature calibration compatible with the most common thermistor curves and has a small resistive temperature coefficient. It is also RoHS compliant and has very low prices.

Application Fields of KW222J2

KW222J2 can be used to measure temperature in many different applications. It is mostly used in medical devices, industrial equipment, and any mechanical components that are sensitive to temperature changes. It can also be used for controlling switches in heating/ventilation/air-conditioning (HVAC) systems and for temperature protection which requires accurate temperature sensing.

Working Principle of KW222J2

KW222J2 works according to the principle of negative temperature coefficient (NTC). It consists of a semiconductor material, usually silicon dioxide, that has been doped with impurities. When exposed to higher temperatures, this material has n-type conduction, and when exposed to lower temperatures, it has p-type conduction. Thermally, a thermistor is a two-terminal device. The electrons and holes are free to flow between these two terminals. When temperature increases, the current across the two terminals increases as well. This is because the higher temperature causes more electrons to move, thus allowing an increase in current. With the increase in current, the resistance decreases – this is known as the negative temperature coefficient of the thermistor.

Conclusion

KW222J2 is a type of NTC thermistor which is used as a temperature sensor in many applications. It has a high accuracy of ±1°C and is temperature calibration compatible with the most common thermistor curves. Its small size, low prices and good temperature resistance make it useful in various projects. Moreover, it works according to the principle of negative temperature coefficient, where the resistance decreases with increasing temperature.

The specific data is subject to PDF, and the above content is for reference

Part Number	Manufacturer	Price	Quantity	Description