How harmful is static electricity to the chip
That is, ESD electrostatic discharge, which can cause various damages to precision semiconductor chips, such as penetrating the thin insulating layer inside the components; destroying the gates of MOSFET and CMOS components; triggering lockup in CMOS devices; causing reverse bias Short-circuit with the forward-biased PN junction; melt the bonding wire or aluminum wire inside the active device.
In the computer industry, ESD is a frequent intangible damage, mainly in:
1 Lightning strikes or other electrostatic discharges cause damage to the network card
2 The chipset burned out, such as a large number of South Bridge burned out due to the ESD problem of the USB interface in a major motherboard manufacturer a few years ago
3IO interface problems cause damage to the components on the motherboard, such as burned transistors
4 System error, restart, hard disk data loss, etc. Effective ESD protection measures are added to the motherboard design, which can prevent the occurrence of the above-mentioned damages to the greatest extent, thereby improving the quality of the motherboard and prolonging the working life. Generally, motherboard components can be generally divided into three states after being exposed to ESD: health, death, and injury. Healthy, this component has proper ESD protection and can operate normally for several years. In case of death, the component has no ESD protection, and suffers severe ESD damage and cannot operate normally. Injured, the component has suffered partial damage and contains potential defects. Although it is not easy to detect in a short time, it fails prematurely during use