PRF18BG471QB5RB Sensors, Transducers

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PTC thermistors, or Positive Temperature Coefficient thermistors, are temperature sensors where the electrical resistance increases with increase in temperature. The PRF18BG471QB5RB is one such thermistor, offering an electrical resistance of 18 kΩ at 25 °C, and increasing to 50 kΩat at 150°C. Used in many applications, the PRF18BG471QB5RB thermistor works on the principle that the electrical resistance increases more sharply with higher temperature. In other words, it has a higher positive temperature coefficient than many other thermistors.

The PRF18BG471QB5RB thermistor is particularly useful in automotive electronics applications. It is non-inductive, and can be used to sense temperatures in the range of -40 °C to 200°C. In addition, it is extremely robust compared to other temperature sensors, withstanding extreme thermal shock and vibration making it well-suited for automotive electronics.

A PTC thermistor is also commonly used in temperature sensing and reactance applications. For example, the PRF18BG471QB5RB thermistor may be used in over-temperature protection circuits, providing critical temperature sensing information. In an over-temperature protection circuit, the thermistor is placed in close contact with the system being monitored. As the system temperature rises, the thermistor’s resistance also rises. When the resistance reaches a pre-defined level, the circuit shuts down to avoid further damage.

Beyond over-temperature protection circuits, the PRF18BG471QB5RB thermistor may also be used as a current sensing device in high-power applications. The thermistor’s resistance decreases as the current passing through it increases. This decrease in resistance increases the voltage drop across the thermistor, causing a higher current to flow. This increase in current may then be used to detect and regulate the current flowing through a system.

The PRF18BG471QB5RB thermistor could also be used to measure temperature and humidity in HVAC systems, as well as in medical and laboratory equipment. In a data logging system, it can be used to monitor temperature and humidity levels in a given environment. The high temperature stability of the PRF18BG471QB5RB thermistor makes it an ideal choice for these applications.

The PRF18BG471QB5RB is a temperature sensing thermistor designed for a wide range of temperature sensing and reactance applications. It offers high robustness and excellent thermal shock resistance, making it well-suited for automotive, HVAC, and medical applications. It operates on the principle that the electrical resistance increases with higher temperature, making it a useful current sensing device in high-power applications.

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