This is a 22 pF ±2 ceramic capacitor with a capacitance value of 22 pF and an operating voltage rating of 3000V. The part number is CAP CER 22PF 3KV C0G/NP0, it has a metric size of 1808 (4520) and it belongs to the C0G, NP0 type, which is also known as 1B.