What is ESD?
Electrostatic Discharge is a high voltage event from the
release of electrical energy caused by static electricity or
electrostatic induction.
ESD can cause permanent damage to electronics and
integrated circuits.

什麼是ESD？
靜電放電是從高電壓事件電能的釋放引起的靜電或靜電感應。
靜電放電可能會導致電子永久性損傷，集成電路。


ESD Principle
Protect the IC by suppressing incoming transient voltage to an
acceptable level (Output of Vc: Clamping voltage).
ESD原理
通過抑制輸入的瞬態電壓到保護IC可接受的水平（VC的輸出：箝位電壓）。


Types of ESD
1) Sparks – A spark is triggered when the electric field strength
exceeds approximately 4‐30kV/cm. This may cause a very rapid
increase of free electrons and ions in the air, temporarily causing
the air to abruptly become an electrical conductor. eg, lightning.
2) Corona discharge – A corona discharge occurs between a highly
curved electrode (eg, tip of pen) and an electrode of low curvature
(eg flat plate)
3) Brush discharge – A brush discharge occurs between an
electrode with a curvature between 5mm and 50mm and a voltage
of about 500 kV/m. The resulting discharge paths have the shape of
a brush.
Comchip Technology ‐ PTM: Intro to ESD 4

ESD的類型
1.火花 - 火花觸發時的電場強度超過大約4-30kV/厘米。

這可能會導致非常快速的的空氣中的自由電子和離子的增加，導致暫時空氣突然變成電導體。如閃電。
2.電暈放電 - 一個電暈放電的高度之間發生彎電極（例如，鋼筆尖）和低曲率電極（如平板）
3.放電刷 - 刷子放電的發生之間電極為5mm和50毫米和電壓之間的曲率約500千伏/米2。
所得放電路徑具有的形狀一把刷子。


ESD Simulations
There are three models for assessing the
survivability/susceptibility of electronic devices to ESD:
1)Human Body Model, HBM
2)Machine Model, MM
3)Charged Device Model, CDM

ESD模擬
有三種型號為評估
電子設備ESD的生存性/敏感性：
1.人體模型，HBM
2.機器型號，MM
3.帶電器件模型，CDM

Product Applications
Applications
Communications → phones, fax, webcams...
Consumer Electronics → TV, stereo, cell phones…
Business Machines → photocopying machines, airconditioners,
anti‐theft systems...
Information processing → notebook computers, LCD
monitors, modems, scanners, PDAs ...
Industrial machinery → cars, motors, equipment ...

產品應用
通訊→電話，傳真，網絡攝像頭...
消費電子→電視，音響，手機...
商業機器→影印機，airconditioners，防盜系統...
信息處理→筆記本電腦，液晶顯示器，調製解調器，掃描儀，個人數字助理...
工業機械→汽車，電機，設備...