ESD is the abbreviation of Electro Static Discharge, which means electrostatic discharge in Chinese: charge transfer (transfer) between two objects with different potentials due to direct contact or electrostatic field induction. It can be seen that static electricity and electrostatic discharge (ESD) are completely different physical concepts or physical processes. One is "static" and the other is "dynamic". With electrostatic discharge, there are often electricity transfer, current generation and electromagnetic field radiation.

Electrostatic protection measures usually include the following:

Electrostatic dissipation: The ordinary materials are mainly replaced by electrostatic dissipative materials (that is, materials with surface resistance between the 5th ohm 10 and the 6th ohm 1 1). For example, anti-static desk mats, anti-static floors, anti-static packaging boxes and so on used in anti-static work areas.

Electrostatic discharge: usually refers to the grounding of equipment and personnel, that is, the equipment is grounded through a metal wire whose cross-sectional area meets the standard, and the personnel are grounded through bracelets, clothing, anti-static shoes and other measures.

Electrostatic neutralization: generally speaking, it refers to the use of an ion generator to generate positive and negative ions and blow the ions to the area where static electricity needs to be eliminated in order to neutralize the generated static electricity. Common ones are ion fans, wind snakes and so on.

Electrostatic shielding: Electrostatic shielding can be divided into active shielding and passive shielding. Mainly refers to the use of faraday cage principle, the use of closed conductors to shield electrostatic power or products that need protection.

Environmental humidification: Experimental data show that the increase of environmental humidity can effectively reduce the probability of electrostatic discharge. However, environmental humidification can only be used as an auxiliary measure and cannot replace the above measures.

ESD protection design of electronic products: that is, setting anti-static circuits on electrostatic sensitive elements. There are many well-designed protection circuits at home and abroad, which can effectively protect thousands of volts at the highest. Protection circuit can reduce the sensitivity of components to ESD, but it cannot be completely eliminated.