The B43733B4398M600 from TDK Corporation is a Supercapacitor with Capacitance 3900 µF, Voltage Rating 350 V, Equivalent Series Resistance 8.1 to 30 milli-ohm, Temperature Operating Range -25 to 85 Degree C. Tags: Screw Mount. More details for B43733B4398M600 can be seen below.