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In the SMT production line, we sometimes encounter the problem of static electricity. If the conditions are suitable, the starting point is almost a few volts, and the peak is hundreds of thousands of volts. Therefore, anti-static is a must in our work. Today, I will tell you about it. Some measures for anti-static of SMT placement machine.


 


 



(1) Set up anti-static areas according to anti-static requirements, and have obvious anti-static warning signs. According to the electrostatic sensitivity of the devices used in the work area, it is divided into 1, 2, and 3 levels, and different protective measures are formulated according to different levels.
Level 1 electrostatic sensitivity range: 0-1999V
Level 2 electrostatic sensitivity range: 2000-3999V
Level 3 electrostatic sensitivity range: 4000-15999V
Above 16000V is a non-static sensitive process product.
(2) The room temperature of the electrostatic safety zone (point) is 23±3℃, and the relative humidity is 45-70%RH. It is forbidden to operate SSD (Static Sensitive Components) in an environment of less than 30%.
(3) Regularly measure the surface resistance value of the ground, desktop, turnover box, etc.
(4) Non-production items, such as tableware, tea sets, handbags, woolen fabrics, newspapers, rubber gloves, etc., are prohibited on the workbench in the static safety zone (point).
(5) When the staff enters the anti-static area, they need to discharge. Operators must wear overalls and anti-static shoes and socks when operating. Before each operation, the electrostatic protection safety inspection must be carried out, and the production can only be carried out after passing the test.
(6) Wear an anti-static wristband during operation, and measure whether the wristband is effective every day.



 

                   
                   
                   
                   
                       
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