The KR-5R5H334-R from Eaton is a Supercapacitor with Capacitance 330 mF, Voltage Rating 5.5 to 6.3 V, Equivalent Series Resistance 50000 mOhms, Temperature Operating Range -25 to 70 Degree C. Tags: Through Hole. More details for KR-5R5H334-R can be seen below.