The Schottky diodes are used in switching power supplies and high frequency instrumentation. Since, the metal does not contain holes, therefore, in the forward bias, the conduction is only due to movement of free electrons. When the Schottky diode is forward biased, it conducts and the free electrons flow towards the metal-semiconductor junction. ![]() it has higher voltage and current ratings as compared to an ordinary PN junction diode. Basically, the Schottky diode is a power diode, i.e. Thus, in a Schottky diode, we obtain an aluminium-silicon junction. The semiconductor is usually silicon and metal is aluminium. ![]() What is a Schottky Diode?Ī Schottky diode is a special purpose diode that uses metal to semiconductor junction for rectification applications instead of PN junction. positive terminal is connected to the cathode and negative terminal to the anode, then the diode is said to be reverse biased and does not conduct the electric current.ĭue to its operating characteristics, a diode is mainly used in switching and rectification applications in various electrical and electronic circuits. On the other hand, if voltage polarity is reversed, i.e. When a DC voltage is applied to the diode such that the positive terminal is connected to anode and the negative terminal of the source is connected to the cathode, then the PN junction diode is said to be forward biased and conducts the current. The anode is the terminal which is connected to the P-region while the cathode is the terminal that is connected to the N-region. Therefore, a PN junction diode has two terminals namely anode and cathode. These two semiconductor layers are joined together to form a PN junction. What is a PN Junction Diode?Ī PN junction diode, as its name implies, a semiconductor electronic device which has two layers of oppositely charged semiconductor materials namely P-types and N-type semiconductors In this article, we will discuss about Schottky diode and PN junction diode, and highlight the major differences between them by considering various parameters such as basic definition, circuit symbol, characteristics, applications, etc. ![]() Till date, various types of diodes have been developed with the advancement in technology. A diode is an electronic device that can perform switching and rectification operation in an electronic circuit.
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