Definition of field-effect transistor in US English:

field-effect transistor

(also FET)


  • A transistor in which most current is carried along a channel whose effective resistance can be controlled by a transverse electric field.

    • ‘Pica takes advantage of the way that field-effect transistors emit photons when they switch, letting sensors track circuit activity across the chip.’
    • ‘Superconducting field-effect transistors and Josephson-junction integrated circuits have been demonstrated.’
    • ‘Signals from neurons or other electrically active cells have been recorded using microelectrode arrays of metallized electrodes on glass or silicon substrates or nonmetallized field-effect transistors.’
    • ‘In 1997, researchers demonstrated that semiconducting nanotubes can act as field-effect transistors, which are the the bread and butter of all electronic devices.’
    • ‘This latest development comes four years after IBM built the first nanotube field-effect transistors, a component in the construction of computer chips that controls the flow of electrical current.’