The meaning of ESD

The meaning of ESD:

ESD stands for "ElectroStatic Discharge" in English. ESD has been formed since the middle of this 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). Subject. In recent years, with the rapid development of science and technology, the wide 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 more and more important.

Three types:

1. The type of human body refers to the friction between the body and clothes when the human body moves. When people hold an ESD-sensitive device without first dragging the charge to the ground, the triboelectric charge will move to the ESD-sensitive device and cause damage.

2. The charged type of microelectronic devices refers to these ESD-sensitive devices, especially for plastic parts, when in the automated production process, frictional charges will be generated, and these frictional charges will be discharged very quickly through low-resistance circuits to highly conductive The ground surface is firmly grounded, thus causing damage; or the metal parts of the ESD-sensitive device are charged by induction to cause damage.

3. The type of field sense is surrounded by a strong electric field, which may come from plastic materials or human clothes, and electron conversion will occur across the oxide layer. If the potential difference exceeds the dielectric constant of the oxide layer, an arc will be generated on the side to destroy the oxide layer, resulting in a short circuit.

4. Others include: machine model, field enhancement model, human metal model, capacitive coupling model, and floating device model.