Diodes are not just used as rectifiers, as various other types of diode can be used in many other applications. Some other different types of diodes include: light. Different Types of Diodes Used in Various Applications. A diode is a two-terminal device, having two active electrodes, between which it allows the transfer of current in one direction only. Most diodes are made from semiconductors such as silicon, however, germanium is also used sometimes. Light Emitting Diode (LED). The diode operates when a voltage signal is applied across its terminals. The application of a DC voltage to make the diode operate in a circuit is called as.


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Some of the metal migrates into the semiconductor and produces a PN junction.

Types of Diode | Different Diode Types |

These diodes have a very low level of capacitance and are ideal for many radio frequency RF applications. They also have the advantage that they are very cheap to manufacture, although their performance is not diode types and applications repeatable.

The standard PN junction may be thought of as the normal or standard type of diode in use today. These diodes can come diode types and applications small signal types for use in radio frequency, or other low current applications, or other types may be high current and high voltage ones that can be used for power applications.

This type of diode has a lower forward voltage drop than ordinary silicon Diode types and applications junction diodes. At low currents the drop may be somewhere between 0. To achieve this performance they are constructed in a different way to normal diodes having a metal to semiconductor contact.

Diode Types | Types of Diode | Electronics Notes

They are widely used as clamping diodes, and in RF applications. Read more about the Schottky diode.

A form of diode types and applications diode used for generating and shaping pulses at very high frequencies. These diodes rely on a very fast turn off characteristic of the diode for their operation.

It offers lower noise, but does not reach such high frequencies.

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Although not widely used today, the tunnel diode was used for microwave applications where its performance exceeded that of other devices of the day. Read more about the Tunnel diode. The two terminals of the diode are called as anode and cathode.

The symbol of diode is as shown in the figure below. The characteristics of a diode closely match to that of a switch. An ideal switch when open does not conduct current in either directions and in closed state conducts in both directions.

The characteristic of a diode is as shown in the figure below. Ideally, in one direction that is indicated by the arrow head diode must behave short circuited and in other one that opposite to that of the direction of arrow head must be open circuited. By ideal characteristics, diode types and applications diodes is designed to meet these features theoretically but are not achieved diode types and applications.


So the practical diode characteristics are only close to that of the desired. Diodes transmit electric currents in one direction, however, the manner in which they do so can vary.

What is a Diode: Tutorial on Different Types of Diodes | Diode Applications

Some of the different types of diodes are: They are p-n junction diode types and applications that permit transfer of electrons between the electrodes and produce light. However, not all LEDs emit visible light. There diode types and applications those that emit infrared light, which cannot be seen by human eyes.

When the diode is switched on or forward biased, the electrons recombine with the holes and release energy in the form of light. This means electronic excitation spearheads photon emission, which in turn results in light emission or electroluminescence.

Aluminium gallium indium phosphide or aluminum gallium arsenide are generally the conducting materials used in LEDs.

Different Types of Diode: Summary

The color emitted by the LED, will depend on the combination of semiconductor material used. Avalanche Diode Slightly doped p-n junctions at times encounter avalanche breakdown, which is the sudden multiplication of voltage voltage transients across a diode.

This sudden increase often destroys diodes.