What is the role of anti-static ground wire
First: protect the human body to prevent the human body from contacting objects with strong static electricity and hurting people
Second: protect static-sensitive devices, such as chips, the static electricity carried by the human body is sufficient to penetrate sensitive devices and damage equipment. This is very important!
The loss and harm caused by static electricity in the electronics industry such as the manufacture and use of microelectronics and optoelectronics are quite serious. According to a report from the United States in 1988, due to the impact of ESD, their electronic industry lost as much as $5 billion annually; according to Japanese statistics, 45% of their unqualified electronic devices were caused by static electricity.
The harm of ESD to electronic components is also manifested in its potential. That is, the device does not fail immediately after being subjected to ESD stress, but will gradually degrade or suddenly fail during use. The device at this time is "work with injury". This is one of the main reasons why people do not know enough about static electricity hazards. In fact, the potential and cumulative effect of electrostatic discharge on component damage will seriously affect the reliability of components. Because the potentially damaged devices cannot be identified and eliminated, once they fail in the on-machine application, the losses will be even greater. The best way to avoid or reduce this loss is to take electrostatic protection measures to prevent components from electrostatic discharge.