The DDKG2R7ELL500KM40T from Nippon Chemi Con is a Radial Lead-Type Supercapacitor that is ideal for electricity backups. It has a capacitance of 50 F and a capacitance tolerance of ±10%. This supercapacitor has a voltage rating of 2.7 V and an equivalent series resistance (ESR) of less than 19.2 milli-ohms. It has a lifetime of 2000 hours when operated at 2.7 V and 65°C. This RoHS2-compliant supercapacitor is available in a through-hole package that measures 18 x 40 mm.