The B43733E2398M608 from TDK Corporation is a Supercapacitor with Capacitance 3900 µF, Voltage Rating 250 V, Equivalent Series Resistance 11 to 36 milli-ohm, Temperature Operating Range -25 to 85 Degree C. Tags: Screw Mount. More details for B43733E2398M608 can be seen below.