PCBA processing is a prevalent integrated technology in the electronics industry. Since PCBA processing frequently involves electrostatic-sensitive components, certain technologies require specific measures to protect against static electricity. Consequently, static electricity protection in PCBA processing is both necessary and crucial. Electrostatic warning signs should be prominently displayed in the workshop, on equipment, components, or packaging to remind staff to be cautious of electrostatic discharge or electrical overload. Additionally, what are the anti-static requirements?
1. **Workshop Anti-Static Requirements**
Based on product production standards, the workshop should be equipped with appropriate anti-static facilities, and the ground wire must be independent and reliable. Maintain constant temperature and humidity in the workshop. Designate static-safe working areas with clearly visible anti-static warning signs. The grounding system outside the workshop should be inspected annually, while the grounding systems within the workshop, such as floors/mats and workbenches, should be checked every six months with corresponding records. The workshop temperature and humidity should be controlled at (25±2)°C and 65%±5%RH, measured twice daily with records kept.
2. **Requirements for Employees’ Electrostatic Protection**
1. When entering the anti-static area, wear anti-static overalls and anti-static shoes as required.
2. Before handling electrostatic-sensitive components, wear a grounding wrist strap or foot strap and pass the corresponding electrostatic test.
3. Items prone to static electricity must not be brought into the anti-static area.
4. Electrostatic-sensitive components must be stored in anti-static packaging during handling, storage, and distribution.
5. Anti-static packages can only be opened after implementing the necessary anti-static measures.
6. Trolleys and shelves used in the anti-static area must be properly grounded.
7. Anti-static work clothes and shoes must not be worn outside the work area and should be cleaned regularly according to regulations.
8. Clean anti-static work surfaces with cleaning agents approved by electrostatic protection personnel.
9. Avoid placing static-sensitive components and circuit boards near plastic products or tools (e.g., computers and terminals).
10. Connect all tools and machines to a ground;
11. Use static-dissipative table mats;
12. Employees who are not wearing a wristband should avoid approaching the static-sensitive workstation;
13. Immediately report any potential causes of electrostatic damage.
3. Matters Needing Attention During Operation
1. Touch the work surface with both hands before handling components to ensure any static electricity on your hands is discharged through the anti-static work surface;
2. Place devices with their pins facing down on the table to dissipate static electricity;
3. When handling an integrated circuit, grasp the body of the component, not the pins;
4. When operating with electronic components, hold them by the edges of the PCB board and avoid touching the components or circuits directly;
5. Do not drag or slide electronic components across any surface;
6. Non-conductive personnel should maintain a distance of more than 1 meter from the static-safe working area;
7. Only remove components and circuit boards from anti-static packaging within the static-safe working area;
8. Temporarily store static-sensitive components in anti-static containers or packaging when not in use;
9. Minimize handling frequency to the lowest possible limit.
The above points outline common anti-static requirements in PCBA processing. Adhering to these guidelines in the workshop, by the staff, and during the operational process is essential.
1. **Workshop Anti-Static Requirements**
Based on product production standards, the workshop should be equipped with appropriate anti-static facilities, and the ground wire must be independent and reliable. Maintain constant temperature and humidity in the workshop. Designate static-safe working areas with clearly visible anti-static warning signs. The grounding system outside the workshop should be inspected annually, while the grounding systems within the workshop, such as floors/mats and workbenches, should be checked every six months with corresponding records. The workshop temperature and humidity should be controlled at (25±2)°C and 65%±5%RH, measured twice daily with records kept.
2. **Requirements for Employees’ Electrostatic Protection**
1. When entering the anti-static area, wear anti-static overalls and anti-static shoes as required.
2. Before handling electrostatic-sensitive components, wear a grounding wrist strap or foot strap and pass the corresponding electrostatic test.
3. Items prone to static electricity must not be brought into the anti-static area.
4. Electrostatic-sensitive components must be stored in anti-static packaging during handling, storage, and distribution.
5. Anti-static packages can only be opened after implementing the necessary anti-static measures.
6. Trolleys and shelves used in the anti-static area must be properly grounded.
7. Anti-static work clothes and shoes must not be worn outside the work area and should be cleaned regularly according to regulations.
8. Clean anti-static work surfaces with cleaning agents approved by electrostatic protection personnel.
9. Avoid placing static-sensitive components and circuit boards near plastic products or tools (e.g., computers and terminals).
10. Connect all tools and machines to a ground;
11. Use static-dissipative table mats;
12. Employees who are not wearing a wristband should avoid approaching the static-sensitive workstation;
13. Immediately report any potential causes of electrostatic damage.
3. Matters Needing Attention During Operation
1. Touch the work surface with both hands before handling components to ensure any static electricity on your hands is discharged through the anti-static work surface;
2. Place devices with their pins facing down on the table to dissipate static electricity;
3. When handling an integrated circuit, grasp the body of the component, not the pins;
4. When operating with electronic components, hold them by the edges of the PCB board and avoid touching the components or circuits directly;
5. Do not drag or slide electronic components across any surface;
6. Non-conductive personnel should maintain a distance of more than 1 meter from the static-safe working area;
7. Only remove components and circuit boards from anti-static packaging within the static-safe working area;
8. Temporarily store static-sensitive components in anti-static containers or packaging when not in use;
9. Minimize handling frequency to the lowest possible limit.
The above points outline common anti-static requirements in PCBA processing. Adhering to these guidelines in the workshop, by the staff, and during the operational process is essential.
