The K21420682SHM0J143 from Kendeil is a Supercapacitor with Capacitance 6800 µF, Voltage Rating 420 V, Equivalent Series Resistance 9.5 milli-ohm, Temperature Operating Range -40 to 85 Degree C. Tags: Screw Mount. More details for K21420682SHM0J143 can be seen below.