– Ceramic filter capacitors are a type of capacitor that uses a ceramic material as the dielectric. – The main advantage of ceramic capacitors is that they are very stable and have a low ESR (equivalent series resistance). – Ceramic filter capacitors are commonly used in high-frequency applications, such as in RF circuits and power supplies. – They are also used in applications where stability is important, such as in medical devices and instrumentation. – Ceramic filter capacitors are available in a variety of sizes and capacitances, and can be used in both surface mount and through-hole applications.