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Static dissipative compounds: solutions for static control

SpecialChem / Oct 3, 2001

Static electricity can be described as an electrical charge caused by an imbalance of electrons on the surface of a material. Electrostatic charging occurs when two dissimilar surfaces are brought together and then separated, or rubbed together. Charges can also be generated by induction or conduction from other charged objects or due to ions in the local atmosphere. Electrostatic discharge (ESD) is the transfer of charge between two bodies at different electrical potentials. Electrostatic discharge and its control have a significant effect on the production process of modern industry and logistics. As practically all electronic components and assemblies are prone to ESD damage, even at relatively low voltage levels, designing a proper ESD protective environment for electronic equipment is essential. Damage that occurs when protection from ESD is insufficient can be either catastrophic failure or latent defect. Catastrophic damage is usually detected before the component is shipped but latent damage is much more difficult to detect. An uncontrolled ESD event can also lead to a spark, which in an environment with explosive gases or dust, can cause an explosion.

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