The 251M4001227MR13S from Matsuo Electric is a Power Capacitor with Capacitance 220 µF, Voltage Rating 4V, Equivalent Series Resistance (ESR) 2000 mOhm, Operating Temperature -55 to 125 Degree C. Tags: Surface Mount, Film Capacitor. More details for 251M4001227MR13S can be seen below.