The TCTR0603F100KF4050T is a NTC thermistor 0603 RoHS manufactured by ResistorToday. It is a surface mount, flat film type thermistor with a resistance of 100k ohms at 25C, a dissipation factor of 4.05 mW/K, an operating temperature range of -40C to 125C, and a noise level of =2mV peaks to peaks. This part is commonly used in temperature sensing, current sensing, and overcurrent protection circuits.