Common ways of ESD protection
Therefore, it can be seen that anti-static measures in the electronics industry are very important. The main anti-static methods are static leakage, dissipation, neutralization, humidification, shielding and grounding. The specific and common methods are the establishment of an anti-static production environment and operation and packaging methods. Anti-static floors, anti-static tables and chairs, anti-static materials, ion fans, shielding bags and various grounding systems are used. Various methods such as electrostatic wrist straps and anti-static shoes are used to strengthen ESD protection to reduce the hazard of electrostatic discharge and ensure the improvement of product quality and yield. The human body is the most common source of electrostatic hazards in the production environment of the electronics industry. For static electricity, the human body is a conductor, so the main anti-static measure is to strengthen the grounding of the human body. *Common methods are: use anti-static ground, anti-static footwear (static from the feet to the ground) and wear an anti-static wrist strap and ground (static from the hand to the ground). It can be seen that in addition to the construction of standard anti-static floor, the anti-static detection of personnel is particularly important, mainly using the human body comprehensive static tester to test whether the anti-static wrist strap worn by the personnel and the anti-static are normal within the standard range , Not too low or too high. Why can't it be too low? From the perspective of anti-static, the total resistance of the human body to ground is as small as possible, but the minimum value is restricted by safety. The human body must have a certain value of resistance to ground in case of metal equipment or devices. In the case of short-circuiting with the industrial frequency power supply, the resistor can limit the current flowing through the operating human body, so if it is too low, an industrial safety event may occur when the current is leaked. Is it too high? The wrist strap or anti-static value exceeds the standard high resistance value. The static electricity generated by the human body cannot be normally discharged through the wrist strap or anti-static shoes. The electrostatic discharge may damage the electronic components. Therefore, wear the anti-static properly. Wrist straps, anti-static shoes, and inspections to ensure that they are normal and not failing are important steps for entering the production workshop.
Strengthen control of anti-static detection of human body:
In many places where EPA is set up, the tests of anti-static footwear and anti-static wrist straps are performed by traditional manual login or supervision methods, which are difficult to implement and even make mistakes, making it difficult to obtain customers and management. This trust also forms a huge potential loophole in the electrostatic grounding of the police. As mentioned earlier, ESD control protection has also become one of the core conditions that customers pay attention to when choosing suppliers. Therefore, more and more people regard anti-static detection of human body as an important inspection item, and foundries must be well controlled. Personnel static detection. The ESD electrostatic protection access control system is a combination of the human body comprehensive electrostatic tester and the access control system. It proposes a variety of solutions to the shortcomings of the traditional human body electrostatic tester to ensure that when the operator enters the EPA area, the personnel have been properly charged. Preparation for grounding. Scope of application: SMT production line control area, semiconductor industry clean room, high-tech research and development room, defense and military electrostatic control area, explosive disposal area, aviation and space maintenance verification area, electrostatic control area, oil and gas electrostatic control area, biochemical industry static electricity Control area...all kinds of occasions where anti-static testing and protection are required.