A ceramic capacitor with the following specifications: CAP CER 5.6PF 250V C0G/NP0 1808 - it has a capacitance of 5.6 pF and a tolerance of ±0.1pF, and is rated for 250 volts. The capacitor is classified as C0G or NP0. It is packaged in the metric size 4520 (which corresponds to the non-metric size 1808).