The use of plastics in microwave electronic devices

Although microwave electronic devices are primarily metallic and inorganic in composition, they make use of synthetic resins for insulation, adhesion, encapsulation, and numerous miscellaneous applications. Silicones, fluorocarbons, epoxies, elastomers, polyesters, foams, and laminates are widely used. The selection of the proper material is based on the chemical, mechanical, and electrical properties of the material. Resiliency, mechanical strength, coefficient of expansion, electrical performance, thermal stability, chemical properties, and ease of application are important factors.