半导体有classtool还有什么

❶ ESD和半导体放电管什么区别

ESD：electrostatic protection device 电子保护器 也称：静电保护 半导体放电管：Thyristor & Sidactor 它是用半导材料做成的，属于二极管的一类 ，它是起开关作用，把大的能量泄放到大地。它主要指标有：通流量、动作电压。
ESD与半导体放电管，同属于过压，峰值波涌吸收的器件，详细你可以看看这家公司的产品手册：它们里面技术文档很齐的，看看他的参数说明！
http://www.yint.com.cn/proctlist.asp?classid=926 它是半导体放电管的资料
http://www.yint.com.cn/proctlist.asp?classid=929 它是静电ESD的资料

❷ 半导体净化车间的微颗粒达不到class100，对硅片生产有什么影响

去这个里面。bbs.2ic.cn
资料很多。

❸ 什么是3A类导体激光

应该是3A类半导体激光
半导体激光器产生于上世纪九十年代初，欧美等几大公司相继生产出可供商用的半导体激光二极管，使激光的实际应用价值发生了革命性的进步。其他种类的激光器由于产生激光的机理过于复杂，使其体积，重量特别大，功耗高等原因，大大限制了激光的应用。而半导体激光器的出现使这些问题迎刃而解。
半导体激光器体积小、重量轻、可靠性高、转换效率高、功耗低、驱动电源简单、能直接调制、结构简单、价格低廉、使用安全、其应用领域非常广泛。如光存储、激光打印、激光照排、激光测距、条码扫描、工业探测、测试测量仪器、激光显示、医疗仪器、军事、安防、野外探测、建筑类扫平及标线类仪器、实验室及教学演示、舞台灯光及激光表演、激光水平尺及各种标线定位等。

半导体激光器的一些独特优点使之非常适合于军事上的应用，如野外测距、枪炮等的瞄准、射击模拟系统、致盲、对潜通信制导、引信、安防等。由于可用普通电池驱动，使一些便携式武器设备配置成为可能。

目前已开发出并投放市场的半导体激光器的波段有370nm、390nm、405nm、430nm、480nm、635nm、650nm、670nm、780nm、808nm、850nm、980nm、1310nm、1550nm等，其中1310nm、1550nm主要用于光纤通讯领域。405nm - 670nm为可见光波段，780nm - 1550nm为红外光波段，390nm - 370nm为紫外光波段。

激光安全警示和使用注意事项

激光器是强度很高的光源辐射器件，大功率的激光器可以用于切割焊接金属材料，所以激光对人体，特别是人眼有严重伤害，使用时需特别小心。国际上对激光有统一的分类和统一的安全警示标志，激光器分为四类（Class1～Class4），一类激光器对人是安全的，二类激光器对人有较轻的伤害，三类以上的激光器对人有严重伤害，使用时需特别注意，避免对人眼直射。

3a类激光器是指可见光激光器的出口光功率在1 - 5mw之间，一般认为对人的眼睛是不安全的，暴露在这种激光器的光束下会对眼睛的视网膜造成伤害，因此不能暴露在这种激光器的光束下或直视激光光束。

❹ 半导体与晶体管

半导体是一个很大来的范畴,晶体管自当然属于半导体的范畴.
关于半岛体的发展史,网上有很多文章,你可以搜索一下.
TSMC台积电今年将发表28nm设计流程,明年1Q投产;看来你提到的90nm技术已比较落后了.
www.semi.org.cn/news/news_show.aspx?ID=19577&classid=117

❺ 半导体设备 为什么叫tool

任何设备本质上都是“工具”，只不过有简单和复杂之分，功能之分。英语tool是“工具”的意思。所以半导体设备在英语里面也可以叫“tool
”。

❻ 半导体激光器(将此文翻译成英文）（将此文翻译成英文）

Also known as laser diode laser diode (LD). Into the 1980s, it absorbed the physical development of the semiconctor up-to-date results, the use of quantum well (QW) and strained quantum well (SL-QW) structures, such as novelty, the introction of the refractive index molation Bragg launchers, as well as to enhance Bragg molation transmitter The latest technology, as well as the development of the MBE, MOCVD and the CBE, such as crystal growth technology of the new technology, making new epitaxial growth technology to precisely control crystal growth to the accuracy of atomic layer thick, high-quality growth of quantum wells, as well as strained quantum well materials. As a result, proction of the LD, the current threshold of a significant decline in conversion efficiency has been greatly improved the power output doubled, significantly longer service life.
A low-power LD
In the field of information technology for the rapid development of low-power LD. For example, for fiber-optic communications and optical switching systems distributed feedback (DFB) and the dynamic single-mode LD, narrow linewidth tunable DFB-LD, such as CD-ROM for information processing technology in the field of visible light Wavelength (such as wavelength of 670nm, 650nm, 630nm The blue-green to red) LD, surface-emitting quantum well, as well as ultra-short laser pulses substantive, which are all treated the development of LD. The development of these devices are: narrow-linewidth single-frequency, high-speed, as well as short-wavelength tunable optical and integrated single-chip, and so on.
B high-power LD
In 1983, a single wavelength of 800nm output power LD more than 100mW, to 1989, 0.1mm-wide LD be reached 3.7W continuous output, and 1cm linear array LD has reached 76W output, the conversion efficiency of 39%. In 1992, the Americans also targets to a new level: 1cm linear array LD CW output power up to 121W, the conversion efficiency of 45%. Now, the output power of 120W, 1500W, 3kW and many other high-power LD have been published. High-efficiency, high power LD array and its rapid development for all-solid-state laser, diode laser that is pumped (LDP) of the rapid development of solid-state laser provides strong.
In recent years, in order to adapt to the EDFA and the EDFL, and other needs of the wavelength of 980nm high-power LD is that there is great development. Fiber Bragg Grating with recently selected frequency for filtering, a significant improvement in the stability of its output, pump effectively improve the efficiency.
And the characteristics of the application: semiconctor diode laser is the most important practical for a class of lasers. Its small size, long life, and a simple injection of current-pumped his way to work with the voltage and current circuit-compatible, which can be integrated with a single. And also can be as high as GHz frequency molation direct current for high-speed molation of laser output. As a result of these advantages, the semiconctor diode laser in the laser communications, optical storage, optical gyros, laser printing, as well as radar range, and so on, as well as access to a wide range of applications.