The K21420822SHM0L145 from Kendeil is a Supercapacitor with Capacitance 8200 µF, Voltage Rating 420 V, Equivalent Series Resistance 8.5 milli-ohm, Temperature Operating Range -40 to 85 Degree C. Tags: Screw Mount. More details for K21420822SHM0L145 can be seen below.