Ceramic capacitors are a type of capacitor used in electronics, denoted by the designation CAP CER. They utilize ceramic materials to provide a high dielectric constant between their plates. This results in a compact and relatively low-cost component that is often utilized for filtering and coupling purposes. Ceramic capacitors typically exhibit stable temperature coefficients but can experience variations in capacitance due to aging. They also tend to be prone to moisture sensitivity, which may impact performance over time.