TCT Magnetic (also known as T.C.T-Tores Composants Technologies) is a manufacturer of wound passive components and magnetic cores. It offers power and pulse transformers, sensors, chokes, and inductors as well as iron-nickel, iron-silicon, iron-cobalt, and nanocrystalline cores. The company serves the railway, energy, nuclear power, aeronautics, building automation, manufacturing, and electronics markets.