The B43733A6398M608 from TDK Corporation is a Supercapacitor with Capacitance 3900 µF, Voltage Rating 500 V, Equivalent Series Resistance 6.8 to 26 milli-ohm, Temperature Operating Range -25 to 85 Degree C. Tags: Screw Mount. More details for B43733A6398M608 can be seen below.