This is a CAP CER 2200PF 2.5KV X7R 1808 - a ceramic capacitor with specific characteristics. It has a capacitance value of 2200 pF, tolerance of ±10%, and operates at a voltage rating of 2500V (2.5kV). This component is classified as an X7R type and measures in the metric 1808 package size equivalent to 4520 in imperial units.