The B43707A5278M650 from TDK Corporation is a Supercapacitor with Capacitance 2700 µF, Voltage Rating 450 V, Equivalent Series Resistance 14 to 40 milli-ohm, Temperature Operating Range -25 to 85 Degree C. Tags: Screw Mount. More details for B43707A5278M650 can be seen below.