The 25PEV220M8X10.5 from Rubycon is a Supercapacitor with Capacitance 0.22 mF, Voltage Rating 25 V, Equivalent Series Resistance 27 mOhm, Temperature Operating Range -55 to 105 Degree C. Tags: Surface Mount. More details for 25PEV220M8X10.5 can be seen below.