The CAP CER 3900PF 4KV X7R 2225 is a type of ceramic capacitor with specific characteristics. It has a capacitance value of 3900 pF and operates within the range of ±10% at a voltage rating of 4000V (4kV). The "X7R" classification indicates that this component belongs to the X7R dielectric family, suitable for applications requiring stability across temperature ranges. This capacitor is identified by its metric size designation of 2225 and part number 5763.