The specified component is a 0.4pf capacitance ceramic capacitor with a working voltage of 1KV and dielectric material classification C0G/NP0. It has the code designation 1111 and is in a 2828 metric size package. The capacitor's nominal capacitance value is 0.4pF, with a tolerance of ±0.5pF, and it has a maximum working voltage rating of 1000V (1kV).