Anti-static knowledge introduction
1. Production site, including anti-static treatment of floors, doors, windows, ceilings, etc. For example, floor brush anti-static paint, etc.
2. Anti-static grounding of the machine, assembly line, anti-static work surface, etc.
3. Anti-static of the operator: Wear anti-static coat shoes, wear anti-static wrist straps, etc.
4. Storage of component materials and products, anti-static during transfer: anti-static turnover boxes, packaging boxes, etc.
Component breakdown damage caused by electrostatic discharge is the most common and serious electrostatic hazard in the electronics industry. It is divided into hard breakdown and soft breakdown. Hard breakdown is a one-time breakdown of the component dielectric, burnt or permanent failure; soft breakdown is caused by device performance degradation or parameter indicators.
Antistatic loading boxes, component boxes, turnover boxes, turnover trays, etc. must be used for the transfer and storage of electrostatic sensitive components and printed circuit boards between processes. To prevent the accumulation of static electricity and cause harm. Electrostatic sensitive components and printed circuit boards must be used as anti-static shielding bags, packaging bags, packaging boxes, strips, baskets, etc. to avoid static damage during transportation.
In the production process of electronic products, the finished components and components are often in contact with and separated from equipment tools, and static electricity is generated. Antistatic seat cushions, turnover trolleys, maintenance kits, tools, work chairs (stools), etc. must be used. Static electricity is quickly vented by proper grounding.
Friction and static electricity are two major sources of harm in the electronics and microelectronics industries, but the generation of static electricity is not a hazard. The danger lies in the accumulation of static electricity and the resulting electrostatic charge discharge, so it must be controlled. An electrostatically charged object forms an electrostatic field around it, which produces mechanical effects, discharge effects, and electrostatic induction effects.
Due to the mechanical effect of static electricity, floating dust particles in the air will be adsorbed to electronic components such as silicon wafers, which seriously affect the quality of electronic products. Therefore, anti-static measures must be taken for purifying the working space.