The HP-3R0-J507UYJ44 from Jinzhou Kaimei Power is a Supercapacitor with Capacitance 500000 mF, Voltage Rating 3 V, Equivalent Series Resistance 6 mOhms, Temperature Operating Range -40 to 65 Degree C. Tags: Through Hole. More details for HP-3R0-J507UYJ44 can be seen below.