The B43733B9478M658 from TDK Corporation is a Supercapacitor with Capacitance 4700 µF, Voltage Rating 400 V, Equivalent Series Resistance 7.5 to 26 milli-ohm, Temperature Operating Range -25 to 85 Degree C. Tags: Screw Mount. More details for B43733B9478M658 can be seen below.