Transistor Devices, Inc. (TDI) is a global supplier of Power Systems Solutions for the Computer/Networking, Telecommunications, Military/Aerospace, Medical and Industrial markets. We have the broadest range of high technology power conversion products available in the marketplace, including DC and AC Power Systems, Power Supplies, Rectifiers, Converters and accessory equipment. Established in 1960, TDI is headquartered in New Jersey, has over 1000 employees and seven facilities located throughout the world.