The ebook FEEE - Fundamentals of Electrical Engineering and Electronics is based on material originally written by T.R. Kuphaldt and various co-authors. For more information please read the copyright pages.

Tunnel Diode

The unqualified term tunnel diode refers to the Esaki tunnel diode, an early quantum device. A reverse biased diode forms a depletion region, an insulating region, between the conductive anode and cathode. This depletion region is only thin as compared to the electron wavelength when heavily doped-- 1000 times the doping of a rectifier diode. With proper biasing, quantum tunneling is possible.

Last Update: 2010-11-19