This is a high-quality ceramic capacitor with the part number CAP CER 0.9PF 1KV C0G/NP0 1111, featuring a capacitance of 0.9 pF with an accuracy of ±0.1pF and a voltage rating of 1000V (1kV). It is designed with C0G/NP0 specifications and is available in the metric size 2828.