3. Electrostatic discharge electric field or electric current produce unripe heat, make component gets hurt (potential loss) .
4. The electromagnetism field range that electrostatic discharge produces is very big (amount to hundreds of bend over / rice) spectrum is extremely broad (from a few to thousands of million) , produce to the electron implement cause interference to damage even (electromagnetism is disturbed)
If component is destroyed entirely, will surely reach in production in tasting a canal, be aware of and eliminate, the influence is minor, if component is slight,be damaged, not easy discovery plays in normal test, below this kind of case, because regular meeting passes multilayer treatment, when already was being used even, ability discovery is destroyed, not only the examination is not easy, and its loss also is forecasted hard. Want to expend how many manpower and check of financial capacity ability to give all issues, and if be in,the ability when using senses trouble, its loss will be potential tremendous.



4. Electrostatic damage to electronic product what characteristic is there?
(1) . Concealment quality
Human body cannot be felt directly electrostatic unless produce electrostatic discharge, but produce electrostatic discharge human body to also certainly can tip-and-run does not feel, because the electrostatic spark voltage of human body perception is,this is 2 - 3 KV, so electrostatic have concealment quality.
(2) . Potential
Some electrons yuan parts of an apparatus is done not have apparent fall by the function after electrostatic injury, but cumulative discharge can cause internal injury to parts of an apparatus and form hidden trouble for many times. Because this is electrostatic,have potential to the injury of parts of an apparatus.
(3) . Random sex
Is the meeting below circumstance of electronic component what sufferred electrostatic destroy? Can so say, after arising from a component, arrive all the time before its attaint, all processes are browbeaten electrostaticly, and these electrostatic generation also are had use a sex randomly. Its attaint also is had use a sex randomly.
(4) . Complexity
The invalidation that electrostatic discharge injures analyses the job, because of the essence of electronic product, fine, tiny structure characteristic take time, give or take a lot of trouble, costly, ask higher technology often needs to use scanning report lens to wait for tall accurate instrument. Even so, the loss that phenomenon of a little electrostatic injury also causes with other reason hard tries to distinguish, make the person regards electrostatic injury invalidation as by accident other be no longer in force. Before this is damaging not sufficient understanding to electrostatic discharge, often the invalidation with ascribe early failure or unidentified circumstance, masked the real reason of invalidation not self-consciously thereby. So electrostatic the analysis that injures to electronic parts has complexity.
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