00048-PCB技术文章精选111篇.pdf
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1、 写在前面写在前面 一、前言 当今社会是一个信息的社会,尤其是互联网的兴起,使世界变得更易 沟通和交流,人们通过 INTERNET可以实现许多的梦想。就象是我们就是技术网站, 如果没有互联网,也就没有了与你的交 流,也可能没有了这个【PCBTech】 的软件! 二、为什么写【PCBTech】? 这要从我刚入线路板这个行业开始说起,当时想得到一些好的技术 文章,提高自己的专业技能是相 当困难的,从老师傅的言传中得到一点知识就如获 至宝的收集整理,结合日常控制中出现的工程、品质 问题的解决再自己总结一些, 都是非常的珍惜。也常常希望能有一些专业的文章让我们进行系统的学 习。 随着信息的发展,这些资
2、料的获得已经变得很方便,PCB行业的专业 杂志也是越办越好、越办越 多。但我却发现了另外的一外现象,就是现在的技术人员 不太在意这些工程技术文章了!可能是多了的 原因吧,可能是现在写文章的人越来越 不求甚解吧,可能是现在的工程人员越来越浮澡吧!可能 是。 既然现时是这样,我就更加想做一点此方面的事情,给同行们提供一个 交流的场所,给同行们一些 专业的文章,所以就有了就是技术网站,就有了 【PCBTech】 V1.0 版本。 三、如何使用【PCBTech】 这是一个非常简单的软件,其中主程序就是一个CHM格式的文件,而各位下载的 是一个ZIP格式的文 件(不会打不开ZIP文件吧!如果真得打不开,
3、请与我们联系!)。其中除了主程序外还包括我们的版权 说明(README。TXT)。 请将此文件解压到任何一个你的硬盘的一个目录下面,运行PCBTech.chm文件即 可! 另外,请各位如果将此软件放在自己的网站让别人下载时保持原样的组成格式,不要删除我们的版 权说明! 三、长远点的想法 制作了这个软件,建设了这个网站,只是一个起步。我想如果大家能够支持 ,我会逐步完善这个网 站和软件,丰富她的内容,也让大家能够多一个交流的空间。 当然如果资源充分,我会扩大网站的业务 范围,实现我们利通资讯社当时建设的想法,成为 PCB行业的门户站点! 四、补充几句 1、关於这个软件资料的来源问题:我原想将自己
4、的收集进行整理分类 后制作出来,后来在中国PCB 信息网 看到其关於工艺技术的介绍较为有条理并且已经录入成为电脑资料,就取而用之!如果你想得到 最新的资料,还是要去中国PCB信息网, 她是一个非常专业和有资源的网站!当然对其还是结合我的体 现进行了重新的调整,还加入几篇 从寻智公司和CIRCUITREE上面得到的文章。 2、关於这个软件是不是免费的问题,我也很矛盾!这些资料从网上得来,应当是不 收取费用的, 但大家一定也能体会到我在制作和维护这个网站时花费的精力及金钱,我在这里要说 得是制作这个软件 不容易,收集和整理这些资料也不容易。最后我还是决定会免费提供给各位同行! 不过我会加 一个密码
5、限制,请需要此软件的人写EMAIL或去就是技术留言给我们索要,目的是想知道这个软件到 哪里去了, 这个要求我想不过分吧! 3、【PCBTech】 V1.0版本共收入精彩专业文章111111篇。 4、如果哪个企业想在我们这个软件或网站上宣传自己的产品或企业形象,我们热烈欢迎!请与我们 联系,价格一定优惠得你想不到! Copyright2001-2002 94TECH 版权所有2001-2002 就是技术 页码,1/2:94TECH:就是技术: 2011-2-23mk:MSITStore:T:资料01-SMT工程02-PCBPCBTech.chm:/index.html 页码,2/2:94TECH
6、:就是技术: 2011-2-23mk:MSITStore:T:资料01-SMT工程02-PCBPCBTech.chm:/index.html 源自源自CIRCUITREECIRCUITREE 共有此类文章16篇共有此类文章16篇 Hungry for Growth: Taiwans Second-Tier Fabricators 中国印制电路工业现状 筹建电路板厂规划及实施浅述 生产SMB的新技术发展动向 表面安装印制板(SMB)的特点 双面印制电路板制造工艺 综述05-工艺技术 印制板技术水平的标志 PCB发展简史 印制板在电子设备中的地位和功能 PCB相关名词解释 印制电路工艺创新探讨 浅
7、析多层印制电路板内层短路工艺因素 高密度、细导线、窄间距制造工艺发展动态 印制电路板制造简易实用手册 21世纪的微特电机技术 Copyright2001-2002 94TECH 版权所有2001-2002 就是技术 Hungry for Growth: Taiwans Second-Tier Fabricators By Steve Gold The capstone article in our Taiwan series examines alternatives to Compeq and Nan Yas manufacturing models. Over the last two m
8、onths, weve looked at two distinct Taiwanese business models: Compeqs R which in turn owns Taiwans second-leading IC foundry. Unlike many vertically integrated companies, the UMC group likes cross-fertilization between its companies. As a result, company leadership is a combination of semiconductor
9、and circuit board cultures. CircuiTree visited World Wisers spotless new Shan-Ying facility, the focal point of its high-tech production effort. Here is where the companys vision of the future is crystallized. Its sister company, UniMicron Technology Corp. (UMTC), shares part of the factory (though
10、none of the production overlaps) and will occupy the expansion being built next door. Operational since last July, the facility produces approximately 200,000 square feet of high-density PWBs per month. Fanning Out Unlike most Taiwanese companies, World Wiser used acquisitions to complement internal
11、 growth. Established in Taoyuan in 1970 as the World Wide Company, it was reorganized into World Wiser in 1990. At the time, fabricators in Taiwan were offering unreasonably low prices to bring in business, and World Wiser had done little to distinguish itself from the pack. But by 1994, World Wiser
12、 became profitable; its restructuring effort had taken root, and it began acquiring companies. World Wiser acquired plants in Lu-Chu and Chung-Li; Lu-Chu now handles high-volume production of conventional boards while Chung-Li does burn-in service and test work. The added capacity helped the company
13、 move into higher volume work. During peak production periods last year, Lu-Chu lines were churning out about 900,000 square feet of 页码,1/41:94TECH:就是技术: 2011-2-23file:/C:Documents and SettingsAdministratorLocal SettingsTemp. PWBs per month. Lu-Chu also became more involved in World Wisers R he cite
14、d lower turnover and a higher productivity as examples of how the stock option gift still keeps giving back to the company-even after the company went public and long-time employees could cash out their options. “1995 was the year we gave 90 percent of the earnings to all of the employees. After tha
15、t, the sales just jumped-more than 2.5 times,“ Wang recalled, sounding as if he could hardly believe the result. Would the company pursue this type of strategy in China? “Most of the workers in Mainland China do not have any idea about stock options,“ stated Tseng. He drew closer and confided with a
16、 large smile, “Most of them want cash.“ Motherlode Market: Northeast Asia World Wisers future lies abroad, but not necessarily in the West. Wang said, “Taiwan is still the major market for us, but America, Europe and Northeast Asia are increasing rapidly.“ Of the three areas targeted by World Wiser,
17、 Wang believes Northeast Asia will grow the most: “I think . . . next year Northeast Asia will double because of the China and Korea markets.“ How can you argue that opinion when you consider a potential electronics market of over 1 billion people in China alone? Product mix is a familiar story. Wan
18、g said, “The six-layer and above is increasing year after year while the four-layer and double- sided have been decreasing. I think by next year, the four-layer and double-sided will be less than 25 percent of production but the six-layer and above percentage will continue to increase. . . . Our maj
19、or product is still the computer-related PCBs. The second major group is telecommunications, which include the network, cellular phone and set-top box boards. As the PC industry moves into 页码,2/41:94TECH:就是技术: 2011-2-23file:/C:Documents and SettingsAdministratorLocal SettingsTemp. Mainland China, .
20、. . we will concentrate on telecommunications.“ Unlike Compeq and Nan Ya, World Wiser is not pushing its layer count. It is focused on high-technology boards that complement UMTCs substrate business. By keeping its product line less than twelve layers, World Wiser can also relentlessly pursue higher
21、 yields. “We have improved the yield rate around 8 to 10 percent in the third quarter of 2000. Its quite an achievement, and it improved the profit rate a lot,“ stated Wang. While this sounds similar to other fabricator approaches to yield, dont forget that World Wiser makes three-mil lines and spac
22、es with six-mil mechanically drilled holes and four-mil laser microvias in mass production. “We hope that we can get the hole size down to three mils . . . next year,“ said Tseng. UMTC Developing Substrate Market On the substrate side, UMTC is achieving even finer features. The spin-off decision was
23、 made once World Wiser realized substrate production and circuit board production require different manufacturing processes. “In 1996,“ explained UMTC President David Cheng, “we started BGA substrate development at World Wiser. At that time . . . our technical education was just starting. The yield
24、was so low. At the end of 1996, we decided BGA substrates are not compatible with PCB manufacturing. We decided to set up this new company.“ Construction of a dedicated BGA substrate line began and by 1998 UMTC qualified cores down to 0.1 mm. “At that time,“ said Cheng proudly, “nobody could produce
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