The HP-3R0-J407UYJ33 from Jinzhou Kaimei Power is a Supercapacitor with Capacitance 400000 mF, Voltage Rating 3 V, Equivalent Series Resistance 6.4 mOhms, Temperature Operating Range -40 to 65 Degree C. Tags: Through Hole. More details for HP-3R0-J407UYJ33 can be seen below.