The 80PFV39M10X10.5 from Rubycon is a Supercapacitor with Capacitance 0.039 mF, Voltage Rating 80 V, Equivalent Series Resistance 35 mOhm, Temperature Operating Range -55 to 125 Degree C. Tags: Surface Mount. More details for 80PFV39M10X10.5 can be seen below.