Briefly describe the importance of self-checking ESD protection
In the electronic manufacturing industry, the quality of the products of the prestige is more prominent-static electricity. In actual production, static protection measures are adopted on the surface. The production workshops use anti-static products. Static electricity damage, when commissioned by the OEM to go to the on-site audit, failed to pass, and did not meet the ESD protection standards. What is the problem? What are the problems with its own conditions? These are the reasons that many ESD engineers must find out at the production site, but often there are not enough conditions inside the production workshop, allowing ESD engineers to find more problems, and the ability to self-check is limited. ESD engineers measure whether the production environment meets ESD standards. , It is necessary to rely on measurement data analysis to know the cause of the problem, and effectively carry out electrostatic protection.
What is the difference between the actual conditions of the production line in the hardest hit area of ESD protection and the anti-static industry standard? How to find out the cause? If you want to know these reasons, you have to go through a system plan. There is no static detection instrument for testing, and the analysis cannot be done. What we often hear from customers is: "Our company has bought a lot of anti-static products, static elimination equipment, and supply The merchants said that there is no problem with the quality, and they have equipped with some test reports of anti-static products." However, high static electricity will still be generated. From this, it can be seen that if you do not have the detection capability, the cause of static electricity and the level of voltage are all If you don’t know, how can it be possible to protect against static electricity? Don't turn electrostatic protection into an empty word, but must implement it seriously.
The investigation of various indicators depends on a variety of instruments to complete, the more common ones: human body comprehensive tester, electrostatic field tester, heavy hammer surface resistance tester, ion fan tester, human body walking voltage tester, wrist strap online monitor ( Or wrist strap tester), ground resistance tester, many companies install access control systems at the entrance of the production workshop in order to prevent people who have not taken protective measures from entering the workshop. With the inspection of the above series of instruments, it can be completely analyzed that the problem exists. The reason for this, especially the quality control during the acceptance of some anti-static products, has not passed the acceptance experience, and must not be put into production. Once mixed into the production, it is likely to bring a certain degree of threat to the production.
Whether the electrostatic grounding and the ground are built is also a very critical step. The anti-static grounding system must have an independent and reliable grounding device. The grounding resistance should generally be less than 10Ω. The burying and detection methods should meet the requirements of the industry. The anti-static grounding wire cannot be connected. The ground wire on the power supply cannot be shared with the lightning protection ground wire, because a lightning strike will affect the performance and personal safety of the product through the loop.
The hardware conditions for static protection must also be available. You must consider carefully when selecting the site of the plant to avoid unnecessary losses. A common event is that the plant is well decorated and the anti-static connection project is required to be unable to hit the appropriate green belt. **The preparatory work is all completed, and the anti-static floor has been laid. When trying to release static electricity on the electrostatic floor, it was not possible to find a channel. There is nowhere to release static electricity. The anti-static grounding project is also a mandatory clause of the ESD audit standard. Oh!
The following is the anti-static table mat inspection diagram:
