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What are the anti-static work areas, equipment, and precautions?

1. Static safety workbench: composed of workbench, anti-static table mat, wrist strap joint, and grounding wire, etc.

2. There should be two or more wrist strap joints on the anti-static desk mat, one for operators and one for technicians and inspectors.

3. Plastic boxes, rubber, cardboard, glass, and other debris that are prone to static electricity are not allowed to be stacked on the electrostatic safety workbench. Drawing materials should be placed in anti-static document bags.

4. Anti static wrist strap: Personnel who directly come into contact with static sensitive devices must wear an anti-static wrist strap. The wrist strap should have good contact with human skin, and the ground resistance value of the wrist strap system should be 1M Ω.

5. Anti static containers: The component material bags, turnover boxes, PCB loading and unloading racks, etc. in the production site should have electrostatic protection. Metal and ordinary containers are not allowed to be used, and all containers must be grounded.

6. Anti static work clothes: Personnel entering the static work area and those in contact with SMD components must wear anti-static work clothes, especially in dry environments with relative humidity less than 50% (such as winter). The fabric of the work clothes should comply with relevant national standards.

7. Personnel entering the work area must wear anti-static work shoes. Personnel wearing regular shoes should use conductive shoe harnesses, anti-static shoe covers, or heel straps.

8. The conveyor belt and transmission shaft used on the production line should be equipped with anti-static grounding brushes and support rods.

9. Ionic wind electrostatic eliminators can be used on the surface of the conveyor belt.

10. Assembly fixtures, testing fixtures, welding tools, and various instruments used in production sites should be equipped with good grounding wires.

11. An anti-static testing platform should be installed at the entrance of the production site, and every person entering the production site should undergo an anti-static test. Only after passing the test can they enter the site.

Static control can refer to the following materials:


(1) Control the environment for static electricity generation:

a. Humidity control. Try to increase humidity as much as possible without causing corrosion, rust or other hazards to equipment or products;

b. Temperature control. Minimize temperature under possible conditions, including ambient temperature and object contact temperature;

c. Dust control. This is an important measure to prevent adhesion (adsorption) of charged particles;

d. The floor, table and chair fabrics, and workbench mats should be made of anti-static materials and properly grounded;

e. The transportation, transmission, storage, packaging, and unpacking of electrostatic sensitive products should take electrostatic protection measures;

f. The speed of spraying, flow, transportation, winding, and separation should be controlled, and moderators should be used in the transportation pipelines of materials such as liquids and powders.


(2) To prevent human electrification:

a. Wear anti-static wristbands;

b. Wear anti-static clothing, clothing, and hats;

c. Wear anti-static shoes, socks, and ankle chains;

d. Wear anti-static gloves and fingertips;

e. Strictly prohibit human activities unrelated to work (such as doing exercises, playing around, combing hair, eating, etc.);

f. Perform ion air bath.


(3) Process control measures:

a. Develop and implement anti-static operation procedures;

b. Use anti-static turnover, transportation trays, boxes, boxes, and other containers and carts;

c. Use anti-static tools (soldering iron, tin absorber, etc.);

d. Adopting anti-static packaging;