The 335DER2R5SGU from Cornell Dubilier is a Supercapacitor with Capacitance 3300 mF, Voltage Rating 2.5 V, Equivalent Series Resistance 200 to 320 mOhms, Temperature Operating Range -25 to 70 Degree C. Tags: Through Hole. More details for 335DER2R5SGU can be seen below.