The B43733F2189M650 from TDK Corporation is a Supercapacitor with Capacitance 18000 µF, Voltage Rating 250 V, Equivalent Series Resistance 2.3 to 7.6 milli-ohm, Temperature Operating Range -25 to 85 Degree C. Tags: Screw Mount. More details for B43733F2189M650 can be seen below.