The Murata PRF18BD471RB5RB is a 0603-sized PTC positive temperature coefficient thermistor, featuring an overheat Posistor with an operating temperature of 80 C and a resistance of 470 ohms. This thermistor is designed to help protect electronic devices from overheating, as it is designed to increases its own resistance in response to increased temperature. This device has a wide temperature range, making it ideal for various types of thermally sensitive applications. Additionally, its small size, high thermal efficiency, and fast response time make it suitable for use in mobile, handheld, and other space-constrained applications. Overall, this thermistor is a cost effective and reliable option for thermal protection of electronic devices.