Types Of Varactor Diodes

Based on the principle of working and the characteristics of diodes they are classified into various types such as zener diodes generic diodes constant current diodes light emitting diodes tunnel diodes varactor diodes peltier diodes laser diodes photodiodes etc. The different types of varactor diodes are available in the market such as hyperabrupt abrupt and gallium arsenide varactor diodes.

Different Types Of Diodes And Their Applications

Varactor Tuning Diode

Details About Svc202 Diffused Junction Type Silicon Varactor Diode 25 Pcs New

A gold plated molybdenum stud is connected to n type layer via the mesa structure and it acts as cathode terminal.

Types of varactor diodes. It is a device whose capacitance varies with the variation in the applied reverse bias potential. Depending on this varactor diodes can be classified into two types viz abrupt varactor diodes and hyper abrupt varactor diodes depending on whether the p n junction diode is linearly or non linearly doped respectively. A varactor diode consists of p type and n type semiconductor layers sandwiched together with the n type layer attached to a mesa table shaped structure.

The symbol of the varactor diode is shown in the above figure that includes a capacitor symbol at one end of the diode that signifies the characteristics of the variable capacitor. It is also known as varicap or voltcap. Various types of diodes with their characteristics uses p n junction diode.

The word varicap is derived from the combination of word variable and capacitor. Varactor diode is a pn junction diode that is especially operated in reverse biased mode. Light emitting diode led.

The terms abrupt varactor diode and hyperabrupt varactor diode refer to the properties of the varactor diode junction. Different types of diodes 1. Light emitting diode led.

This can be used in a whole variety of ways where a capacitance level needs to be controlled by a voltage. In an n type semiconductor material the electrons are the majority charge carrier and in the p type material the holes are the majority carriers. The varactor diode is made up of n type and p type semiconductor material.

Varactor or varicap diodes are used mainly in radio frequency or rf circuits to provide voltage controlled variable capacitance. Some varactor diodes may be categorised as abrupt and hyperabrupt types these terms may sometimes be seen in the varcator data sheets.