The CAP CER 39PF 100V C0G/NP0 0805 is a type of ceramic capacitor. It has a capacitance value of 39 picofarads and can handle voltages up to 100 volts. The C0G designation indicates that it is part of the C0G/NP0 class, which is known for its stability over temperature. This particular component comes in an 0805 (2012 Metric) package size.