The part number CAP CER 56PF 250V C0G/NP0 1808 corresponds to a ceramic capacitor with specific characteristics. This component has a capacitance of 56 pF with an accuracy range of ±2, and it operates at a maximum voltage of 250V. It is designated as being part of the C0G or NP0 (1B) group, which are known for their temperature-stable properties. The capacitor's size is 1808 metric, but it can also be referred to by its imperial counterpart, 4520.