The BCAP3400 P285 K04/K05 from Maxwell Technologies is a Supercapacitor with Capacitance 3400000 mF, Voltage Rating 2.85 V, Equivalent Series Resistance 0.22 mOhms, Temperature Operating Range -40 to 65 Degree C. Tags: Through Hole. More details for BCAP3400 P285 K04/K05 can be seen below.