The B57045K0472K000 is a thermistor manufactured by TDK. It is a chip thermistor type with a disc-type shape, non-flame retardant epoxy coating, and NTC thermistor element material. This thermistor has a tolerance of ±10% and a resistance of 4700 ohms at 25°C. It has a temperature range of -40 to +125°C and has a maximum power rating of 500 mW. The device has a lead soldering temperature of 260°C for 10 seconds.