american capacitors are good quality and performance. american Technical Ceramics Corp. is a U.S.-based company that provides components and customized, integrated packaging solutions for the RF, microwave, and telecom industries. american designs, develops, produces, and sells multilayer capacitors single-layer capacitors, resistive products, inductors, and custom films! products for RF, microwave and millimeter wave applications. Key products include AmericanTechnicalCeramics (ATC) capacitors, ATC inductors, and ATC high-value resistors for wireless communications infrastructure, fiber optics, medical electronics, semiconductor manufacturing equipment, defense, aerospace, and satellite communications markets.