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SMT焊盘设计中的关键技术 被引量:2
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作者 路佳 《微电子学》 CAS CSCD 北大核心 2000年第1期53-55,共3页
焊盘设计技术是表面组装技术(SMT)的关键。详细分析了焊盘图形设计中的关键技术,包括元器件选择的原则、矩形无源元件、SOIC和PLCC及QFP器件的焊盘优化设计。
关键词 表面组装技术 焊盘技术 印制电路板
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FPC焊盘设计类型选择导致的DFM问题及其对策
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作者 车固勇 《现代表面贴装资讯》 2011年第3期45-49,共5页
本文介绍了两种典型的FPC焊盘设计类型,即SMD和NSMD的定义、特点,以及对于FPC制造过程或FPC’A组装过程(SMT)的影响。并以FPC上WCSP封装为例分别阐述了两种焊盘设计导致的DFM问题及其对策。
关键词 柔性线路板/阻层决定型/非阻层决定型/表面贴装技术/偏置钢网
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Applications and research in frame longeron of hydroforming
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作者 Liu Hao Jiao Mengwang +4 位作者 Wei Yuansheng Du Huijun Li Shuli Yang Hongxin Yang Jie 《Engineering Sciences》 EI 2012年第6期79-82,共4页
The application feasibility of hydroforming in frame longeron large parts is verified for the first time at home. The result of the research on the structure design and process analysis for frame longeron shows that h... The application feasibility of hydroforming in frame longeron large parts is verified for the first time at home. The result of the research on the structure design and process analysis for frame longeron shows that hydroforming can he fully realized. With stiffness is comparison, collision test simulation and cross section force with traditional drawing- assembly welding techniques, it has been found that hydroforming combining has multiple advantages such as light- weight, high stiffness, reduction in the number of parts, high precision, hence reduction the associated machining and welding and so on. It is especially suitable for forming various lightweight components used for the chassis parts in automotive. 展开更多
关键词 AUTOMOTIVE HYDROFORMING frame longeron LIGHTWEIGHT
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