TDK EPCOS AEC-Q200 Qualified Inductors TDK EPCOS AEC-Q200 Qualified Inductors feature ceramic/ferrite and ferrite drum cores with flame retardant molding or an injected molded base. These series of inductors have multiple methods of terminal windings, as well as various rated currents and inductances. Due to their resistance to high temperature, humidity, and thermal shock these inductors are ideal for a vast array of application designs, such as automotive electronic systems, telecommunications, and industrial electronics.