The term 'CAP CER' is a designation used to describe ceramic capacitors. These components are a type of capacitor that utilize ceramic materials in their construction, which can be divided into various subcategories based on the types of ceramic used and the configuration of the components themselves. Ceramic capacitors are commonly employed due to their compact size, relatively low cost, and stable capacitance values across a range of frequencies. They are widely utilized in electronic circuits for filtering, coupling, and bypassing applications.