The capacitor in question is a CAP CER 3900PF 100V C0G/NP0 0805 type. It has a capacitance value of 3900 pF and an operating voltage rating of 100V. The ceramic material it's made from falls under the C0G or NP0 classification, which indicates its stability over temperature. This component measures in the metric system as an 0805 (2012) package size.