淺談電子制造過程中的靜電及靜電防護(hù)
鮮飛
(烽火通信科技股份有限公司,湖北 武漢 430074)
摘要：靜電放電（ESD）就是一定數(shù)量的電荷從一個物體（例如人體）傳送到另外一個物體（例如芯片）的過程。這個過程能導(dǎo)致在極短的時間內(nèi)有一個非常高的電流通過芯片，35%以上的芯片損壞都可以歸咎于此。因此，在電子制造行業(yè)里保護(hù)芯片免受靜電放電的損害是非常重要的。實(shí)際上，很多公司在各種不同電子應(yīng)用中都遇到了如何應(yīng)對急速增長的靜電防護(hù)需求的問題。針對ESD 機(jī)制和防護(hù)作了一個較全面的介紹，包括ESD 原理、電流產(chǎn)生、危害、防靜電工藝要求等。
關(guān)鍵詞：靜電釋放；危害；防護(hù)
The Summarizing for ESD and ESD Protection
in Electronics Assembly Industry
Xian Fei
(Fiberhome Telecommunication Technologies Co., Ltd, Wuhan 430074,China)
Abstract：Electrostatic discharge (ESD) is a process in which a finite amount of charge is transferred from one object (i.e., human body) to the other (i.e., microchip). This process can result in a very high current passing through the microchip within a very short period of time, and more than 35% of chip damages can be attributed to such an event. As such, it is very important to protect microchips against ESD stress in electronics assembly industry. In fact, many companies worldwide are having difficulties in meeting the increasingly stringent ESD protection requirements for various electronics applications.
This paper gives a comprehensive coverage on various issues pertinent to ESD mechanism and protection, including ESD fundamentals, charge generation, damaging mechanisms, ESD protection schemes.
Key words: Electrostatic discharge; Damage; Protection