Ceramic capacitors are a type of capacitor that utilize ceramic materials in their construction, specifically in the dielectric layer between the conductive plates. These capacitors are often referred to as Class II or non-polarized capacitors and are widely used due to their relatively low cost, reliability, and stable performance across a range of frequencies and temperatures. They can be found in various applications including filtering, coupling, bypassing, and resonance circuits within electronic devices such as radio transmitters, receivers, audio equipment, and other electrical systems.