The PHB-5R0V305-R from Eaton is a Supercapacitor with Capacitance 3000 mF, Voltage Rating 5.0 to 5.5 V, Equivalent Series Resistance 190 to 200 mOhms, Temperature Operating Range -25 to 70 Degree C. Tags: Through Hole. More details for PHB-5R0V305-R can be seen below.