The RKS1E8R2MCNAFEGS from Nichicon is a Supercapacitor with Capacitance 8.2 µF, Voltage Rating 25 V, Equivalent Series Resistance 50 milli-ohm, Temperature Operating Range -55 to 125 Degree C. Tags: Surface Mount. More details for RKS1E8R2MCNAFEGS can be seen below.