KT502J2

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

KT502J2 is a type of NTC thermistor, a temperature sensor commonly used in electronic circuits. Thermistors are variable resistors that respond to temperature changes, and the NTC type refers to the negative temperature coefficient of thermistors. Temperature sensing with NTC thermistors is an accurate and economical way to give temperature feedback and protection for a variety of electronic systems.

Principle of Operation

An NTC thermistor is a solid state resistor with a resistance value that changes with temperature. As the temperature increases, the resistance decreases and vice versa. This is due to the negative temperature coefficient of the electrical properties of the material used as the thermistor such as semiconductive ceramics. The NTC curve is typically divided into three sections: the linear region, transitional region, and saturation region. The linear region is from 0 to 40°C and is characterized by a straight line representation, and is the most useful range for sensing applications. The other two regions show a much higher deviation from a straight line causing some complexity in the reading.

KT502J2 Specifications

The KT502J2 is a special type of NTC thermistor specifically designed to offer increased accuracy over the traditional thermistor. It provides a linear 1% tolerance from -50 to 125°C with a B25/85 value of 4196K. It is a 2-pin SMT device with a resistance value of 4.7K ohms (470K ohms on ES3-4 series) at 25°C. It features a reduced self-heating of 0.3°C and a low thermal time constant of 10 seconds, meaning it can quickly measure temperature changes and respond to them.

Application Areas

Due to the small size and accurate sensing capabilities of the KT502J2 thermistor, it is often used in portable or embedded electronic devices or products, such as cell phones, PDAs, MP3 players, medical instruments, water valves, automobile instrumentation, and many other temperature sensing applications. It provides temperature protection for the device and aids in temperature measurement. It is also used in motor controls, noise suppression, watt-hour meters, and power supplies.

Performance and Reliability

The accuracy and response time of the KT502J2 thermistor make it suitable for many different temperature sensing applications. It is a robust and reliable device, with a maximum working voltage of 1.3V (ES3-4 series), a long life expectancy, and shock and vibration resistance. It also provides improved temperature sensing stability compared to other thermistors.

Conclusion

The KT502J2 thermistor is an accurate and reliable NTC thermistor that is used in many temperature sensing applications. It provides an accurate voltage-temperature ratio, making it suitable for a variety of electronic systems. With its small size, robust design, and accurate temperate sensing, the KT502J2 thermistor provides a dependable temperature sensing solution.

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