The B43726B6188M600 from TDK Corporation is a Supercapacitor with Capacitance 1800 µF, Voltage Rating 500 V, Equivalent Series Resistance 11 to 40 milli-ohm, Temperature Operating Range -40 to 85 Degree C. Tags: Screw Mount. More details for B43726B6188M600 can be seen below.