Harm of electrostatics on electronic components and protective measures
Electronic components vary according to their type, and the degree of damage by static electricity is also different. The lowest static voltage of 100V will also cause damage. In recent years, with the development of electronic components tending to be integrated, the corresponding electrostatic voltage is also required to be continuously reduced.
The electrostatic voltage induced by the human body is generally above 2-4KV, usually caused by slight movement of the human body or friction with the insulator. That is to say, if the electrostatic potential in our daily life is in contact with the IC, almost all ICs will be destroyed. This danger exists in any working environment where no electrostatic protection measures are taken. The damage of static electricity to IC is not only reflected in the manufacturing process of electronic components, but also in the process of assembly and transportation of ICs.
To solve the above problems, you can take the following various electrostatic protection measures:
1. Operation site electrostatic protection. Static sensitive devices should be operated in an anti-static working area;
2, the body's static protection. Operators wear anti-static overalls, gloves, work shoes, work hats, wrist straps;
3. Static protection during storage and transportation. The storage and transportation of electrostatic sensitive devices cannot be carried out in the presence of a charge.
4, anti-static treatment of electronic components, brush anti-static liquid - Li Jing anti-static liquid
Check and install the IC static protection work place. The purpose of the anti-static measures in this process is to place the work place including the human body at the same potential. The specific methods are as follows:
1. Connect a 1 megaohm resistor to the ground and wear an antistatic wrist strap.
2. Ground the tester, tools, soldering iron, etc.
3. Ground the anti-static mat after the work surface is laid;
4. The operator wears anti-static work clothes and work shoes;
5. Laying anti-static floor or conductive rubber floor mat on the ground;
6. The same potential should be maintained during IC transportation and packaging.
Anti-static performance detection cycle and precautions - anti-static conductive ball
Anti-static rubber sheets (tables, floors), work shoes, work clothes, turnover containers, etc. should be inspected at least once a month. Anti-static wrist straps, air guns, fans, instruments, etc. should be tested once a day. When testing, factors such as temperature and humidity of the site to be inspected must be considered.