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IC dull material recycling manufacturers share the impact of static electricity on electronic components
Edit:A-GRADE Electronic Technology Co., Ltd.   UpDate:2020-01-08

IC dull material recycling manufacturers share what impact static electricity has on electronic components. Depending on the type of electronic component, the degree of damage caused by static electricity is different. The lowest static voltage of 100V will also cause damage. In recent years, with the development of electronic components, integration has been required, so the corresponding electrostatic voltage is also continuously reduced.

The electrostatic voltage induced by the human body is generally above 2-4KV, which is usually caused by the slight movement of the human body or the friction with the insulator. In other words, if the electrostatic potential in our daily life comes into contact with ICs, almost all ICs will be destroyed, and this danger exists in any working environment without electrostatic protection measures. The damage of static electricity to the IC is not only reflected in the manufacturing process of electronic components, but also to the IC during the assembly and transportation of the IC.

A. Influence of static electricity on electronic components

① Static electricity absorbs dust, changes the impedance between the lines, and affects the function and life of the product. ② The element's insulation or conductor is damaged due to the electric field or current, making the element inoperable (completely destroyed). ③ Due to the heat generated by the instantaneous electric field or current, the element is injured, it can still work, and its life is damaged.

B. Characteristics of electrostatic damage:

① The hidden human body cannot directly sense static electricity, unless the electrostatic discharge occurs, but the human body may not feel electric shock. This is because the electrostatic discharge voltage perceived by the human body is 2-3KV. ② Latentity Some electronic components have no obvious performance degradation after being damaged by static electricity, but multiple accumulated discharges will cause internal damage to the device and cause hidden dangers, and increase the device's sensitivity to static electricity. There is no cure for the problems that have arisen. ③ Under what circumstances will random electronic components be damaged by static electricity? It can be said that from the production of a component until it is damaged, all processes are threatened by static electricity, and the generation of these static electricity is also random. Because the generation and discharge of static electricity occur instantaneously, and it is difficult to predict and protect. ④ Complex electrostatic discharge damage sub-board work, which is time-consuming, labor-intensive, and expensive due to the fine and small structural features of electronic products. More sophisticated technologies often require the use of precision instruments such as scanning electron microscopes. Different from the damage caused by other reasons, people mistake the electrostatic damage failure as other failures. This is because before the electrostatic discharge damage is not fully understood, it is often attributed to early failures or unknown failures, thereby unconsciously covering the failure. The real reason. ⑤ Severe ESD problems seem to only affect the users of manufactured products, but they also affect manufacturers at all levels, such as warranty fees, maintenance, and the company's reputation.

Two basic principles for protecting against electrostatic hazards:

① Use or install static-sensitive components in a static-safe area. ② Use electrostatically shielded containers to transport static-sensitive components.

To solve the above problems, you can take the following various electrostatic protection measures:

1. Static electricity protection at the operation site. Electrostatic sensitive devices should be operated in an antistatic work area;

2. Human body electrostatic protection. Operators wear anti-static work clothes, gloves, work shoes, work hats, and wrist straps;

3. ESD protection during storage and transportation. The storage and transportation of electrostatic sensitive devices must not be carried out in a charged state.

To achieve the above functions, the basic approach is to try to reduce the voltage of the charged object to reach the safety value required by the design. That is, the charge (Q) and resistance (R) in the following formula are required to be small, and the electrostatic capacity (C) is to be large. V = I.RQ = CV (where V: voltage, Q: charge amount I: current C: electrostatic capacity R: resistance) Of course, the resistance value is not as low as possible, especially in the antistatic area of ​​a large area Material selection must be done after considering safety measures such as leakage.

4. Consider electrostatic protection when designing and use anti-static devices