A、Influence of static electricity on electronic components：

   1.Electrostatic adsorption of dust changes the impedance between lines, affecting the function and life of products. 

   2.The insulation or conductor of the element is damaged by electric field or current, so that the element cannot work (completely destroyed).

   3.Due to the heat generated by the instantaneous electric field or current, the element is injured and can still work, and the service life is damaged.

 
   B、Characteristics of electrostatic damage:

   1.Hidden human body cannot directly perceive static electricity unless electrostatic discharge occurs. However, when electrostatic discharge occurs, human body may not feel electric shock. This is because the electrostatic discharge voltage perceived by the human body is 2-3kv.
   2.Latent: the performance of some electronic components does not decrease significantly after being damaged by static electricity, but multiple accumulated discharges will cause internal damage to the components and form hidden dangers, and increase the sensitivity of the components to static electricity. 
   3.Under what circumstances will random electronic components suffer from electrostatic damage? It can be said that all processes from the production of a component to its damage are threatened by static electricity, and the generation of these static electricity is also random. Since the generation and discharge of static electricity are instantaneous, it is difficult to predict and protect.
   4.Complex electrostatic discharge damage board work takes time, trouble and money due to the fine and micro structural characteristics of electronic products. Complex technologies often require the use of scanning electron microscopy and other precision instruments. Even so, some electrostatic damage phenomena are difficult to distinguish from the damage caused by other reasons, making people mistake the electrostatic damage failure as other failures. This is before the electrostatic discharge damage is fully understood, It is often attributed to early failure or failure with unknown conditions, so that the real cause of failure is unconsciously covered up.
   5.On the surface, the serious ESD problem only affects the users of finished products, but in fact, it also affects manufacturers at all levels, such as warranty fees, maintenance and the reputation of the company.

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