Electrostatic protection in the process of Pcba processing is a systematic project.
SMT PCBA processing plants should first establish and inspect basic anti-static projects, such as ground wires and floor mats, benches, and environmental anti-static projects. Because once the equipment enters the workshop, if the environment does not meet the requirements and re-rectification, it will cause a lot of trouble. After the foundation project of the smt patch processing production line is built, if it is a dedicated site for long-term products, anti-static equipment should be configured according to the anti-static requirements of long-term products. If there are multiple varieties of products, anti-static equipment should be configured according to the highest level of anti-static requirements.
Anti-static work area The anti-static area in the production line is prohibited from directly using wooden floors or laying wool, hemp, chemical fiber floors and ordinary floor leather. The floor made of electrostatic conductor materials should be used, such as anti-static raised floor or defense on the ordinary floor. Static ground pad, and effective grounding.
The ceiling material in the anti-static area should be anti-static products. Generally, gypsum board products are allowed to use, and ordinary plastic products are prohibited. Antistatic wallpaper should be used for wall fabrics. In general, plaster paint or lime paint is allowed for walls, and ordinary wallpaper and plastic wallpaper are forbidden. This is the case from the current general usage of Shenzhen pcba manufacturers.
The anti-static facilities in the production line of the patch processing plant should have an independent ground wire and separate from the lightning protection wire; the ground wire is reliable and has a complete electrostatic leakage system. The workshop maintains a constant temperature and humidity environment, and the general temperature is controlled at ( 25±2)℃, relative humidity is 65% 5%; the entrance is equipped with ion wind, the anti-static work area should be marked with regional boundaries, and warning signs should be hung in obvious places. The warning signs should comply with the "Electronic Products Anti-static Discharge Control Program" 》(GJB1649-1993), ionized air wind bath equipment should be equipped at the entrance of the work area.
The ESD (ESD) sensitive symbol is a triangle with a hand drawn with a trace inside,
PCB Manufacturer which indicates that the object is very sensitive to damage caused by ESD.
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