金融查询WARNING
YOU ARE ENTERING INTO
AN ESD CONTROL WORKSHOP
OBSERVE ALL ESD PRECAUTIONS
注意
任何人等均要遵守防静电守则
1.0 Introduction 简介
静电是由于两个物体表面互相摩擦而产生的高压电荷。在日常生活中，静电现象经常可见。例如，在冬天脱去尼龙制品衣服或毛衣之类时，有时会发现有"啪啦"声音，黑暗中可能看到火花闪现，人体有触电的感觉，这就是静电现象。 线型灯因为静电现象可能对精密的电子零件造成损坏，所以防静电装置和设备是现代高科技电子产品制造厂为了保障产品安全和质量而设的重要运作系统。
2.0 Definition 定义
Static Electricity is an excess or deficiency of electrons on a surface. It is caused by contact and separation of two dissimilar materials (including solids, liquids & gases).
静电是物体表面的过剩或不稳定电子，它是由两个不同材料物料的接触和分离而形成 (包 括固体，液体及气体) 。
Electrostatic Discharge (ESD)rat组合 is the transfer of electrons between bodies at different static potentials. It is caused by direct contact or induced by an electrostatic field.
静电流是两个不同电位带电体间的电子流动，它可以透过直接接触或受静电场极化而产生。柜台制作
3.0 Cause of Static Electricity 静电的起因
3.1 Triboelectricity Effect 摩擦电效应
The generation of static electricity caused by contacting or rubbing two substances.
静电的产生是由于两个对象的接触或摩擦。
3.2 Electrostatic Fields 静电场
There is an electrostatic field around a charged body. Other objects that enter this field will be polarized by induction without contacting the charged body.
带电体的附近会产生静电场，其他对象进入这静电场，在没有接触带电体的情况下会被极化。
Typical Electrostatic Voltages 主要静电电压
Mean of static generation 产生静电的情况 | Electrostatic voltages 静电电压(V) |
10 to 20 percent related humidity 相对湿度10~20% | 套管挤压65 to 95 percent related humidity 相对湿度65~95% |
Walking across carpet 走过地毯 | 35000 | 1500 |
Walking over vinyl floor 越过乙烯基地板 | 12000 | 250 |
Worker at bench 工作台的工人 | 钢水包 6000 | 100 |
Vinyl envelopes for work instructions 装作业指导书的乙烯基胶袋 | 7000 | 600 |
Common poly bag picked up from bench 从工作台上拿起聚乙烯胶袋 | 20000 | 1200 |
Work chair padded with polyurethane 垫有聚胺酯泡沫的工作椅 | 18000 | 1500 |
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4.0 Effect of Static Electricity 静电的影响
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