ESD is a discipline formed since the mid-20th century to study the generation and attenuation of static electricity, electrostatic discharge models, electrostatic discharge effects such as current thermal (spark) effects (such as ignition and explosion caused by static electricity), and electromagnetic effects (such as electromagnetic interference). In recent years, with the rapid development of science and technology, the widespread application of microelectronics technology, and the increasingly complex electromagnetic environment, the electromagnetic field effects of electrostatic discharge, such as electromagnetic interference (EMI) and electromagnetic compatibility (EMC), have become increasingly important.

What are the parameters that represent the static electricity performance of materials?

The amount of electrostatic charge on an object is commonly expressed by the amount of electrostatic charge and electrostatic voltage, while measuring the anti-static performance of materials such as plastic, rubber, anti-static floors (surfaces), carpets, etc. is usually done using resistance, resistivity, volume resistivity, surface resistivity, charge (or voltage) half-life, electrostatic capacitance, dielectric constant, etc. But the most commonly used and reliable ones are still resistance and resistivity.

Can objects still be electrified without contact?

Answer: Yes!

Except for objects that can be separated and electrified after contact, when a charged object approaches an uncharged object, negative and positive charges will be induced at both ends of the uncharged conductor.

Is static electricity harmful to the human body?

If the static electricity in the human body exceeds 2-3kV, static electric shock will be generated when a person comes into contact with grounded metal. If the static voltage is very high, it will have a certain impact on the psychological and physiological aspects of the human body.

5. The static voltage that electronic devices can withstand from electrostatic damage:

From the above table, it can be seen that the electrostatic breakdown voltage of most devices is between a few hundred to several thousand volts, while the static electricity generated by human activities in dry environments can reach several thousand to tens of thousands of volts.