Schottky diode principle and construction principle — SUNMATE
With the development of economy, the electronic component industry has developed rapidly, and the development of secondary tube, single chip and other components has become more and more mature. Some people asked what Schottky diode is, its principle and
Schottky diode principle and structure working principle
1. The basic principle is: on the contact surface of metal (such as lead) and semiconductor (N-type silicon chip), the established Schottky diode is used to block the reverse voltage. There is a global difference in the working principle of rectification efficiency between Schottky and PN junction. Its withstand voltage level is only above and below 40V. Its specialty is that the switching efficiency is particularly fast and the reverse recovery period is particularly short. Therefore, it can be made into a switching diode and a low-voltage high-current rectifier diode.
2. Schottky diode structure and working principle: It is a multi-generic semiconductor component made of noble metal (gold, silver, aluminum, platinum, etc.) A as the positive electrode, N-type semiconductor B as the negative electrode, using the potential barrier established on the contact surface of the two to have rectification performance. Because there are many electronic devices in N-type semiconductors, and there are only a few free electrons in noble metals, the electronic devices diffuse from high content B to low content A. Obviously, if there are no holes in metal A, there will be no diffusion of holes from A to B.
At present, Schottky diodes are used in many fields at this stage, and Schottky diodes are also an indispensable part of electronic components. Schottky diode not only improves the comprehensive national strength, but also promotes the economic field and improves the information field, and improves people's living standards.