ESD (electrostatic discharge) is a common natural phenomenon. It is a sudden and momentary flow of electric current between two differently-charged objects when brought close together or when the dielectric between them breaks down, often creating a visible spark associated with the static electricity between the objects.
ESD can create spectacular electric sparks (lightning, with the accompanying sound of thunder, is an example of a large-scale ESD event), but also less dramatic forms which may be neither seen nor heard, yet still be large enough to cause damage to sensitive electronic devices.
The effects of ESD on electrical and electronic equipment, devices or systems are everywhere. It is a very high degree of harmful electromagnetic energy. ESD can cause harmful effects of importance in industry, including explosions in gas, fuel vapor and coal dust, as well as failure of solid-state electronics components such as integrated circuits. These can suffer permanent damage when subjected to high voltages. Electronics manufacturers therefore establish electrostatic protective areas free of static, using measures to prevent charging, such as avoiding highly charging materials and measures to remove static such as grounding human workers, providing antistatic devices, and controlling humidity.
Only to improve the level of anti-static interference can ensure the safe use of electronic products.
ESD generators are used to evaluate the electrostatic immunity performance of electrical components and electronic equipment by simulating real electrostatic discharge as defined in the standard IEC/EN 61000-4-2.
