The CAP CER 18PF 630V C0G/NP0 2220 is a specific type of ceramic capacitor with a capacitance value of 18 pF and a voltage rating of 630V. It belongs to the C0G or NP0 classification, which indicates its temperature stability characteristics. The dimensions are 2220, which corresponds to a metric package size. Additionally, this capacitor has a tolerance rating of ±5% and is identified as type 1B.