A metric-sized ceramic capacitor with the designation CAP CER 22PF 630V C0G/NP0 1808 has a capacitance of 22 picofarads and operates within a voltage range of 630 volts. It belongs to the C0G or NP0 type, which is commonly used in electronic components due to its stability and temperature characteristics. The capacitor's dimensions are specified as 1808 (4520 Metric), indicating its size.