The CAP CER 390PF 500V C0G/NP0 0805 is a ceramic capacitor with a capacitance value of 390 picofarads and a voltage rating of 500 volts. It has a temperature coefficient of C0G/NP0, which indicates it is a type of ceramic material known for its stability over a wide range of temperatures. The 0805 package size refers to the metric equivalent of 2012. This capacitor features a capacitance value of ±1 percent and operates within a voltage rating of 500 volts.