The BCAP0050 P300 X11/X1B from Maxwell Technologies is a Supercapacitor with Capacitance 50000 mF, Voltage Rating 3.0 V, Equivalent Series Resistance 10 mOhms, Temperature Operating Range -40 to 65 Degree C. Tags: Through Hole. More details for BCAP0050 P300 X11/X1B can be seen below.