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The Differences Between Anti-Static and ESD

2017-02-22

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It is important to understand that “anti-static” and “dissipative” are terms that are used to subdivide electro static discharge into further detail. Anti-static materials are generally referred to as any material which inhibits triboelectric charging. This kind of charging is the buildup of an electric charge by frictional contact with another material. Anti-static material will not generate a charge, but also will not dissipate a charge.

Dissipative materials will work to actively dissipate a static charge. They also allow the static charges to flow to ground more slowly, and in a more controlled manner, than with conductive materials.

Materials are divided into anti-static or dissipative classifications based on their individual surface resistance. Surface resistance is a measurement by how easily an electric charge can travel across a medium. Dissipative items have a surface resistance of more than 1 x 10⁵ ohms/square but less than 1 x 10¹¹ ohms/square.

Dissipative and anti-static materials both reduce the risk of producing a charge, but only dissipative protects against existing charges as well.

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