PRF18AS471QB1RB: PTC Thermistor for Overheat Sensing

The PRF18AS471QB1RB is a PTC thermistor from Murata Electronics North America. It is a small, surface mount device that is designed to sense overheating conditions. The thermistor has a resistance of 470 ohms at 25°C, with a tolerance of ±50%. Its maximum operating voltage is 32 volts, and its operating temperature range is -20°C to 160°C.

PTC thermistors are positive temperature coefficient thermistors, which means that their resistance increases with temperature. This makes them ideal for overheat sensing applications. When the thermistor is exposed to a high temperature, its resistance increases rapidly. This change in resistance can be detected by a circuit and used to trigger an alarm or shut down the device.

The PRF18AS471QB1RB is a versatile thermistor that can be used in a variety of applications. It is commonly used in consumer electronics, industrial equipment, and medical devices. Some specific applications include:

• Consumer electronics: The PRF18AS471QB1RB can be used to sense overheating conditions in a variety of consumer electronics devices, such as laptop computers, smartphones, tablets, and televisions.
• Industrial equipment: The PRF18AS471QB1RB can be used to sense overheating conditions in industrial equipment, such as motors, generators, and transformers.
• Medical devices: The PRF18AS471QB1RB can be used to sense overheating conditions in medical devices, such as pacemakers, defibrillators, and surgical equipment.

The PRF18AS471QB1RB is a reliable and accurate thermistor that is ideal for overheat sensing applications. It is small, lightweight, and easy to use. It is also RoHS compliant and meets the GHTF A/B standard for medical devices.

Here are some additional benefits of using the PRF18AS471QB1RB PTC thermistor:

• Fast response time: The PRF18AS471QB1RB has a fast response time, meaning that it can quickly detect changes in temperature. This is important for overheat sensing applications where it is critical to detect and respond to high temperatures quickly.
• Wide operating temperature range: The PRF18AS471QB1RB has a wide operating temperature range, making it suitable for a variety of applications. It can operate in temperatures from -20°C to 160°C, making it ideal for use in harsh environments.
• Long-term stability: The PRF18AS471QB1RB is a stable thermistor, meaning that its resistance will not change significantly over time. This is important for overheat sensing applications where it is critical to have a reliable and consistent sensor.

Overall, the PRF18AS471QB1RB PTC thermistor is a versatile and reliable device that is ideal for a variety of overheat sensing applications. It is small, lightweight, easy to use, and has a fast response time, wide operating temperature range, and long-term stability.