The CHP5R5L504R-TWX from Taiwan Zhifengwei Technology is a Supercapacitor with Capacitance 0.5 F, Voltage Rating 5.5 V, Equivalent Series Resistance 3000 milli-ohm, Temperature Operating Range -40 to 65 Degree C. Tags: Through Hole. More details for CHP5R5L504R-TWX can be seen below.