Temperature Sensors - NTC Thermistors

NTC thermistors are electronic temperature sensing devices. They have a wide range of applications in automotive, industrial, consumer electronics, medical and aerospace markets due to their fast response time, accuracy and repeatability. The 15DB751J is a type of NTC thermistor that has an operating temperature range of -50°C to +150°C and a resistance range of 1.0 to 50 ohms.

Application Field

NTC thermistors can be used in a wide variety of applications. They are often used as temperature sensors in HVAC, automotive, and medical systems. They are used to control temperature, monitor the environment, and detect over-heating in motors and other electronic devices. In addition, NTC thermistors are used as components in temperature compensation circuits, surge arrestors, and circuit protection devices.

Working Principle

NTC thermistors are temperature sensitive resistors. This means that their electrical resistance changes constantly with temperature. This is due to the fact that the atoms vibrate at different speeds depending on the temperature. At higher temperatures, the atoms vibrate faster, which increases the resistance of the thermistor. At lower temperatures, the atoms vibrate slower, which decreases the thermistor\'s resistance.NTC thermistors are composed of a ceramic material that has been mixed with a metal oxide such as manganese, cobalt, nickel, or copper. This mixture creates a semiconductor that has a negative temperature coefficient. This means that as the temperature rises, the resistance of the thermistor decreases. The rate at which the thermistor\'s resistance changes is referred to as the Beta value, and is usually between 30 and 5000.

Benefits

NTC thermistors have several advantages over other temperature sensors. They are inexpensive, fast responding, and can be fabricated in small sizes. This makes them ideal for use in a variety of applications. In addition, NTC thermistors are highly accurate and stable over a wide range of temperatures. They also have a high temperature range and a low self-heating coefficient, which enables them to be used in high-temperature environments.

Conclusion

The 15DB751J is a type of NTC thermistor that has a wide range of applications due to its accuracy, fast response time and repeatability. It is inexpensive, fast responding and can be fabricated in small sizes, making it an ideal choice for temperature sensing applications. NTC thermistors have a wide temperature range and a low self-heating coefficient, making them suitable for high-temperature environments.