The CAP CER 9.1PF 200V C0G/NP0 1111 is a specific type of ceramic capacitor with a capacitance value of 9.1 pF and a tolerance of ±0.1 pF. It has a voltage rating of 200V and is classified as C0G, also known as NP0 (1B). The designation "1111" refers to the package size, while "2828 Metric" indicates that it conforms to metric specifications.