The specified capacitor is a CAP CER 390PF 4KV X7R 1812 model. It features a capacitance of 390 pF with an accuracy of ±5%, and it has a voltage rating of 4000V (4kV). This component utilizes a ceramic material classified as X7R, which is packaged in the metric size of 4532, also referred to as 1812 in the standard notation.