2007年12月25日 星期二

EMI and ESD

Tag: EMI, ESD

Electromagnetic interference (EMI) is a disturbance caused in a radio receiver or other electrical circuit by electromagnetic radiation emitted from an external source. The disturbance may interrupt, obstruct, or otherwise degrade or limit the effective performance of the circuit.

Electrostatic discharge (ESD) is the sudden and momentary electric current that flows between two objects at different electrical potentials.

These terms are usually used in the electronics and other industries to describe momentary unwanted effects that may cause damage or bad influence to electronic equipment.

Related EMI and ESD standards, please refer to http://www.dbicorporation.com/ite.htm
See a nice flash drawing in http://www.vactecinc.com/whyshielding.htm

When you are replacing metal covers by plastic, you have to add EMI, ESD shielding on the plastic. Next article, I would discuss how to produce EMI, ESD shielding on plastic by inline sputtering.

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