The CAP CER 3900PF 63V C0G/NP0 1808 is a type of ceramic capacitor with specific characteristics. It has a capacitance value of 3900 pF and operates within a ±5% tolerance range at a maximum voltage rating of 63V. This component adheres to the C0G (NP0) specification, indicating its stability over temperature variations, and features a metric size of 1808.