靜電控制程序的五大原則
- 發(fā)布人：
- 發(fā)布日期：2017-04-14 09:12:35
雖然技術(shù)、工藝和材料在不同的時(shí)期有不同的變化，但是有效的靜電控制程序的設(shè)計(jì)與實(shí)施仍然是基于以下五個(gè)概念 把靜電保護(hù)設(shè)計(jì)到元件和產(chǎn)品內(nèi) 設(shè)計(jì)你的元件、產(chǎn)品和裝配，使其更合理的避免靜電放電(ESD)的作用。可能的話，使用對(duì)靜電不敏感的元件，或者對(duì)你使用的那些靜電放電敏感的元件提供適當(dāng)?shù)妮斎氡Ｗo(hù)。這里相互矛盾的是，先進(jìn)的生產(chǎn)技術(shù)意味著更小型化和更復(fù)雜的幾何形狀，通常對(duì)ESD更為敏感。可是，在產(chǎn)品設(shè)計(jì)建立越多的ESD控制，其后將發(fā)生的問題越少。
Although the technology, process and material in different periods have different changes, but the design and implementation of effective static control program is still based on the following five concepts to design the electrostatic protection components and products within the design of your components, products and assembly, making it more reasonable to avoid the role of electrostatic discharge (ESD). It is possible to provide an appropriate input for the use of an electrostatic insensitive element, or the use of an electrostatic discharge sensitive element. The paradox here is that advanced production technology means more compact and more complex geometries, which are usually more sensitive to ESD. However, the more ESD control in the product design, the less it will happen.
2、消除產(chǎn)生靜電的材料與過程
2, eliminate the material and process of generating static electricity
很明顯，產(chǎn)品設(shè)計(jì)不是完整的答案。你不可以逃避ESD元件和產(chǎn)品，但是可以減少或消除靜電放電的產(chǎn)生與積累。首先要從工作環(huán)境中盡可能地減少或消除許多靜電產(chǎn)生的工序或材料，如普通塑料。因?yàn)镋SD不會(huì)發(fā)生在保持相同電勢(shì)或零電勢(shì)的材料之間，所以工作環(huán)境中的工序或材料應(yīng)該保持在相同的靜電電勢(shì)。通常，這些導(dǎo)電或驅(qū)散材料應(yīng)該電氣連接到相同的公共地，如電氣地線。另外，提供地線給靜電手環(huán)帶、地板或工作臺(tái)表面，安全地減少放電產(chǎn)生與積累。
Obviously, the product design is not a complete answer. You can not escape the ESD components and products, but can reduce or eliminate the generation and accumulation of electrostatic discharge. First of all, to reduce or eliminate a number of static electricity generation process or material, such as ordinary plastic. Because ESD does not occur in the same potential or zero potential between the materials, so the work environment in the process or material should be kept in the same electrostatic potential. Usually, these conductive or disperse materials should be electrically connected to the same public ground, such as the electrical ground wire. In addition, to provide ground wire to the electrostatic bracelet, floor or working table surface, safe to reduce discharge and accumulation.
因?yàn)殪o電的所有產(chǎn)生是不可能完全消除的，所以我們的第三條原則是，安全地驅(qū)散或中和那些要發(fā)生的靜電放電。適當(dāng)?shù)慕拥睾蛯?dǎo)電性或驅(qū)散性的材料起主要作用。例如，帶靜電進(jìn)入工作環(huán)境的工人可通過帶靜電手環(huán)或穿戴ESD控制的工作鞋踏過ESD地板墊來消除自己身上的靜電，將靜電傳到地線，而不是對(duì)敏感元件放電。對(duì)一些物體，如普通塑料和其它絕緣體，接地不能消除靜電放電。通常，利用離子作用來中和這些絕緣材料上的放電。離子作用過程產(chǎn)生正負(fù)離子，吸引到放電物體表面，因此有效地中和靜電放電。
Because all the static electricity generated is not completely eliminated, so our third principle is to safely disperse or neutralize the electrostatic discharge to occur. The proper grounding and electrical conductivity or the material of the dispersion plays a major role. For example, with static electricity into the working environment of workers through with electrostatic bracelet or wear ESD control work shoes stepped on the ESD floor mats to eliminate their electrostatic, electrostatic reached the ground, rather than the sensitive discharge element. For some objects, such as ordinary plastic and other insulators, grounding can not eliminate electrostatic discharge. In general, the discharge of these insulating materials is used to neutralize these insulating materials. The ion action process is produced by the positive and negative ions, which attract the surface of the discharge object, so that it can effectively neutralize the electrostatic discharge.
4、提供對(duì)靜電放電的物理保護(hù)
4, to provide for the physical protection of electrostatic discharge
我們的第四個(gè)原則是防止要發(fā)生的靜電放電接觸到敏感元件和裝配。一個(gè)方法是，對(duì)元件和裝配提供適當(dāng)?shù)慕拥鼗蚍至鳎谷魏畏烹姀漠a(chǎn)品分散開。第二個(gè)方法是，在適當(dāng)?shù)陌b材料中包裝和運(yùn)輸敏感元件。這些材料可有效地將產(chǎn)品屏蔽開靜電，減少由于包裝內(nèi)任何產(chǎn)品移動(dòng)而產(chǎn)生的靜電。
Our fourth principle is to prevent the occurrence of electrostatic discharge from contact to sensitive components and assembly. One method is that the components and the assembly are provided with proper grounding or shunt, so that any discharge from the product is dispersed. The second method is to pack and transport sensitive components in appropriate packaging materials. These materials can effectively shield the product from static electricity and reduce the static electricity generated by any product in the packaging.
5、檢測(cè)你的過程與環(huán)境。
5, test your process and environment.
例如，利用場(chǎng)強(qiáng)計(jì)(field meter)檢測(cè)是否有可能產(chǎn)生ESD危害的靜電場(chǎng)的存在。測(cè)量是最穩(wěn)妥的方法。你確認(rèn)和量化那些真正需要靜電保護(hù)的區(qū)域，允許你集中在那些最為關(guān)注的區(qū)域。另外，你可以確認(rèn)那些不會(huì)產(chǎn)生ESD危害的區(qū)域，節(jié)省你做那些不必要保護(hù)的花費(fèi)。
For example, the use of ESD field (meter) to detect whether there is a potential for the existence of a static electric field. Measurement is the most reliable method. You identify and quantify the areas that really need to be protected, allowing you to focus on areas that are most concerned about. In addition, you can make sure that those areas will not generate the ESD damage and save you the cost of doing so.
這五條原則成為有效的靜電控制程序的基礎(chǔ)。它們可幫助選擇適當(dāng)?shù)牟牧虾统绦颍脕碛行У乜刂艵SD。在大多數(shù)情況下，有效的程序?qū)⑸婕八羞@些概念。在開發(fā)控制程序中，確認(rèn)那些敏感元件、敏感的級(jí)別、和那些對(duì)其具有ESD危害的操作。然后看看哪個(gè)概念將保護(hù)到這些元件。最后，選擇和實(shí)施可完成這個(gè)任務(wù)的程序和材料的結(jié)合使用。
These five principles are the basis for effective electrostatic control procedures. They can help to select appropriate materials and procedures for effective control of ESD. In most cases, an effective program will involve all of these concepts. In the development of control procedures, to confirm those sensitive components, sensitive level, and those who have the ESD damage operation. And then see which concept will protect these components. Finally, the selection and implementation of this task can be accomplished using a combination of procedures and materials.
