The B0810-2R5105-R from Eaton is a Supercapacitor with Capacitance 1000 mF, Voltage Rating 2.5 to 3.0 V, Equivalent Series Resistance 500 mOhms, Temperature Operating Range -25 to 70 Degree C. Tags: Through Hole. More details for B0810-2R5105-R can be seen below.