The B43733A4189M600 from TDK Corporation is a Supercapacitor with Capacitance 18000 µF, Voltage Rating 350 V, Equivalent Series Resistance 2.2 to 7.2 milli-ohm, Temperature Operating Range -25 to 85 Degree C. Tags: Screw Mount. More details for B43733A4189M600 can be seen below.