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Tunnel Diode


Tunnel Diode

Tunnel Diode

Definition

A tunnel diode is a special type of semiconductor diode that works using quantum tunneling.

Key Features

  • Heavily doped semiconductor
  • Exhibits negative resistance
  • Operates at very high speeds (GHz range)

What is Tunneling?

Electrons can pass through a barrier even at low voltage due to quantum mechanics. This process is called tunneling.

Negative Resistance

In a certain region, increasing voltage causes current to decrease. This is known as negative resistance.

Applications

  • High-frequency oscillators
  • Microwave amplifiers
  • Fast switching circuits

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