What are the hazards of ESD during SMT patch processing?

- Sep 27, 2019-

What are the hazards of ESD during SMT patch processing?

The ESD in the SMT chip processing process is harmful. Which ANSI ESD S20.20 is the electrostatic preservative standard in the SMT production and processing process of the American Electrostatic Discharge Association electronic products, is the most authoritative standard for the static electricity of the international electronics industry. Protection is the only certification for electrostatic discharge protection standards. Among them, the company has passed ANSI ESD S20.20 certification, which indicates that static electricity has been strictly controlled in production, thus ensuring product quality to ensure product reliability. Static electricity and electrostatic discharge are ubiquitous in our daily lives, but they are used in electronic equipment and can cause serious damage to electronic equipment. With the rapid development of electronic technology, electronic products have become more and more powerful and small in size, but this is an increasingly sensitive cost for electronic components with electrostatic sensitivity. This is because high integration means that the line unit will become narrower and narrower, and the electrostatic discharge capability tolerance becomes worse and worse. In addition to the large number of new materials, the special device is also a static sensitive material, so that the electronic components, especially the semiconductor device, SMT patch processing, assembly and maintenance environment electrostatic control requirements are getting higher and higher.

On the other hand, in the environment of electronic product SMT processing, production, use and maintenance, a large number of various polymer materials that are easy to generate static electricity are used, which undoubtedly brings more difficulties and challenges to the electrostatic protection of electronic products. .

Electrostatic discharge has two kinds of damage and damage to electronic products: sudden damage and potential damage. The so-called sudden injury refers to the device being seriously damaged and losing its function. This type of damage can usually be detected in the quality inspection of the production process, so the main cost to the factory is the cost of rework maintenance.

The potential damage is the damaged part of the device, the function has not been lost, and can not be found in the production process of the test, but the product will become unstable and good or bad in use, so the quality of the product constitutes a larger s damage. Among the two types of damage, the potential failure is more than 90%, and the sudden failure is only 10%. That is, 90% of the electrostatic damage is undetectable, and only the user's hand will be found in the hands, such as frequent crashes, automatic shutdown, poor call quality, loud noise, good time difference, key errors and other problems mostly involve electrostatic damage. .

Because of this, electrostatic discharge is considered to be the biggest potential killer of electronic products, and electrostatic protection has become an important part of the quality control of electronic products. The difference in the use of domestic and foreign brands of mobile phones is mainly reflected in their differences in electrostatic protection and anti-static design of products.

In fact, the electronics industry has a long history of static electricity. From the emergence of electronic products, especially transistors, this issue has begun to be recognized and valued by companies and countries. Research on electrostatic and electrostatic protection has gradually evolved into an emerging edge discipline, forming modern electrostatic engineering and electrostatic protection engineering, including electrostatic principles and model electrostatic discharge, electrostatic devices, electrostatic hazards and their protection and related electrostatic measurement techniques. A rapid development.

The above is the industry consultation provided by smt patch processing factory Shenzhen Pengzexiang Technology Co., Ltd., I hope to help you! Please contact us if necessary: http://www.oem-pcb.com pcb@sunsoartech.com

 


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