Ceramic capacitors are a type of capacitor that utilize ceramic materials in their construction. They are often used to filter out unwanted frequencies or signals in electronic circuits. These capacitors typically have good high-frequency characteristics and are relatively low cost compared to other types of capacitors. In the context of MLCC (Multilayer Ceramic Capacitor), it refers specifically to a type of ceramic capacitor that consists of multiple layers of ceramic material, which provides a higher capacitance value in a smaller package size. This design enables compactness and high density, making them suitable for use in various electronic applications such as smartphones, laptops, and other devices.