Electrostatic protection measures before use qihe smt pick and place machine

Today author from qihe smt pick and place machine tell you about Electrostatic protection measures and precautions for PCBA processing before use qihe smt pick and place machine

In the process of PCBA processing, electrostatic protection is very important. In PCBA processing and production, good electrostatic protection can effectively protect electronic components and ensure the quality of the patch. So how to take electrostatic protection measures in PCBA processing and production , What are the precautions in electrostatic protection, Qihe smt pick and place machine tech will explain to you following.

2.Why do PCBA processing need electrostatic protection?
There are precision electronic components on the PCBA board, many of which are sensitive to voltage. Shocks above the rated voltage can damage these components.
It is difficult to check the PCBA board damaged by static electricity step by step during functional testing. What is even more fatal is that some PCBA boards function normally during testing, but when the finished product is used in the hands of customers, there are occasional defects. Bringing great hidden dangers, affecting the company’s brand and reputation. Therefore, in the process of PCBA processing, great attention must be paid to ESD electrostatic protection

3.How to do electrostatic protection measures in PCBA processing

(1) Operators must wear electrostatic work clothes. It is forbidden to attach or wear any metal products on work clothes. It is not allowed to take off work clothes on the site of operating electrostatic sensitive products. .

(2) Wear an anti-static wrist, the wristband is in good contact with the skin and is grounded reliably. It is not allowed to stack plastic boxes, rubber, cardboard and glass and other debris that are prone to static electricity on the electrostatic safety workbench.

(3) The operation of all components must be carried out on the electrostatic safety workbench. All components entering the anti-static work area must be treated according to anti-static requirements.

(4) The electrostatic sensitive components dropped on the floor during operation must be tested and reconfirmed before they can be used. Items that cannot be directly tested must be confirmed to be qualified before they are released.

(5) When holding sensitive components, avoid touching their leads and lugs. When holding the motherboard, try to avoid areas with static-sensitive components. When cleaning certain components, anti-static brushes should be used instead of plastic brushes.

(6) When entering the workshop, you must wear an anti-static cap to prevent your hair from inadvertently coming into contact with static-sensitive components.

(7) When welding by hand, use an anti-static low-voltage constant temperature electric soldering iron, and it is forbidden to reuse the device packaging tube to package the components.

Precautions for electrostatic protection in PCBA processing

Ensure that the temperature and humidity of the workshop are within the standard range, 22-28 degrees Celsius, humidity 40%-70%;

All employees entering and leaving the workshop must be electrostatically discharged;

Dress as required, wear electrostatic caps, electrostatic clothing, and electrostatic shoes;

4. All workstations that need to touch the PCBA board must wear a corded electrostatic ring and connect the corded electrostatic ring to the electrostatic alarm;

The electrostatic wire is separated from the equipment ground wire to prevent equipment leakage and damage to the PCBA board;

All turnover car electrostatic frame shelves, etc. must be connected to the electrostatic ground wire;

Strictly follow ISO quality management requirements for ESD electrostatic spot inspection

The above is the entire content of the electrostatic protection measures and precautions for PCBA processing.

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