A high-voltage ceramic capacitor, specifically the CAP CER 820PF 4KV X7R 1812, features a capacitance of 820 picoFarads with a tolerance of ±10 percent. It has a maximum working voltage of 4000 volts (4 kV) and is constructed using an X7R dielectric material. The capacitor's dimensions are in the metric configuration known as 4532, but it is often referred to by its American counterpart, 1812.