The B43733E2279M658 from TDK Corporation is a Supercapacitor with Capacitance 27000 µF, Voltage Rating 250 V, Equivalent Series Resistance 1.7 to 5.2 milli-ohm, Temperature Operating Range -25 to 85 Degree C. Tags: Screw Mount. More details for B43733E2279M658 can be seen below.