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Meaning of ESD

Update:31-05-2022
Summary:

ESD stands for ElectroStatic Discharge in English, whic […]

ESD stands for ElectroStatic Discharge in English, which means "electrostatic discharge". ESD has been formed since the middle of this century to study the generation and decay of static electricity, electrostatic discharge models, electrostatic discharge effects such as current thermal (spark) effects (such as fire 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, more and more attention has been paid to the electromagnetic field effects of electrostatic discharge such as electromagnetic interference (EMI) and electromagnetic compatibility (EMC).

Three types:
1. Human body type refers to the friction between the body and the clothes that generates triboelectric charges when the human body moves. When a person holds an ESD-sensitive device without first pulling the charge to 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. During the automated production process, triboelectric charges will be generated, and these triboelectric charges will be quickly discharged to highly conductive lines through low-resistance lines. a solidly grounded surface, thereby causing damage; or by inductively charging metal parts of ESD-sensitive devices.

3. The field-sensing type is surrounded by a strong electric field, which may come from plastic materials or people's 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.

Others include: machine model, field enhancement model, human body metal model, capacitive coupling model, and suspended device model.

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