The 506DER2R5SLZ from Cornell Dubilier is a Supercapacitor with Capacitance 50000 mF, Voltage Rating 2.5 V, Equivalent Series Resistance 30 to 50 mOhms, Temperature Operating Range -25 to 70 Degree C. Tags: Through Hole. More details for 506DER2R5SLZ can be seen below.