2023-07-06
In modern society, electronic devices have become an indispensable part of our daily life. However, with the rapid development of electronic technology, we also have to face a common and can not be ignored problem - static electricity. Static electricity can cause catastrophic damage to electronic equipment, and the emergence of electrostatic protectors effectively solve this problem. Liyang Semiconductor will discuss the importance of electrostatic protectors and the key role they play in the electronics field from the perspective of protecting the electronics industry.
Second, the principle of electrostatic protector
Electrostatic protector is a device used to eliminate or reduce electrostatic discharge. It is based on two key principles: grounding and electrostatic discharge. First, the electrostatic protector guides the static charge to the ground by grounding, thus eliminating the accumulation of static charge. Secondly, the electrostatic protector transfers the accumulated electrostatic charge to a location where it can be safely released through electrostatic discharge, such as a ground socket or a specially designed electrostatic discharge device.
Second, the application of electrostatic protectors in various fields
Electrostatic protectors are widely used in many industries and fields to ensure the safety of equipment and personnel. In the electronics manufacturing industry, electrostatic protectors are widely used in semiconductor production, assembly and testing processes to prevent electrostatic discharge from damaging sensitive electronic components. In the chemical and petroleum industries, static protectors help prevent fires and explosions caused by static electricity, protecting the lives and property of workers. In addition, electrostatic protectors are also widely used in medical equipment, aerospace, textiles and paints.
Third, ESD electrostatic protection device selection?
So, how to prevent ESD static release of IC circuit or electronic components damage? Installing ESD electrostatic protection diodes in circuits has become a mainstream trend in the electronics industry. The key question comes, procurement ESD electrostatic protection devices, what factors need to consider? ESD electrostatic protection device selection has always been a topic in the industry. ESD electrostatic protection devices, packaging forms are diverse, different types, how to correctly choose the appropriate ESD electrostatic protection devices?
1, ESD electrostatic protection device junction capacitor CJ should be selected as small as possible to avoid affecting the quality of communication;
2, the cut-off voltage of ESD static protection device VRWM is greater than the maximum operating voltage of the protected circuit;
3, according to the circuit design layout and the number of protected lines to choose the appropriate form of packaging, in general, ESD electrostatic protection device package size to a certain extent, reaction device protection level, the larger the package can accommodate ESD chip area is also larger, the higher the level of protection;
4, ESD electrostatic protection devices have single, two-way points, to choose according to the working signal. Unipolar ESD diode with choice of any polarity; For bipolar, a bi-directional ESD electrostatic protection device should be selected.
