The RSHT1221M1LDE7002E from Taiyo Yuden is a Supercapacitor with Capacitance 220 µF, Voltage Rating 10 V, Equivalent Series Resistance 24 milli-ohm, Temperature Operating Range -55 to 105 Degree C. Tags: Surface Mount. More details for RSHT1221M1LDE7002E can be seen below.