Fabrication of integrated resistors in printed circuit boards

来源 :中南大学学报(英文版) | 被引量 : 0次 | 上传用户:newhing
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
In order to utilize integrated passive technology in printed circuit boards (PCBs), manufacturing processing for integrated resistors by lamination method was investigated. Integrated resistors fabricated from Ohmega technologies in the experiment were 1 408 pieces per panel with four different patts A, B, C and D and four resistance values of 25, 50, 75 and 100 Ω. Six panel per batch and four batches were performed totally. The testing was done for 960 pieces of integrated resistors randomly selected with the same size. The value distribution ranges and the relative standard deviation (RSD) show that the scatter degree of the resistance decreases with the resistor size increasing and/or with the resistance increasing. Patts D with resistance of 75 and 100 Ω for four patts have the resistance value variances less than 10%. Patts C and D with resistance of 100 Ω have the manufacturing tolerance less than 10%. The process capabilities are from about 0.6 to 1.6 for the designed testing patts, which shows that the integrated resistors fabricated have the potential to be used in multilayer PCBs in the future.
其他文献
The multi-layer ceramic capacitor (MLCC) alignment system aims at the inter-process automation between the first and the second plastic processes. As a result o
研究背景:通常伴EGFR受体表达的头颈部鳞癌预后较差.西妥昔单抗(C-225)是一种可抑制EGFR的单克隆抗体,并可提高包括顺铂在内的多种细胞毒药物的疗效.
研究背景:前列腺癌是西方国家男性最常见的非皮肤来源恶性肿瘤,病死率排第二位.根治性前列腺切除(RP)是临床局限性前列腺癌标准的外科治疗手段.
期刊
9月11日,2007年中国名牌产品暨中国世界名牌产品表彰大会在北京人民大会堂隆重举行,橡胶行业喜获丰收,高强力输送带、摩托车轮胎、橡胶避孕套、全钢子午线轮胎(复评)四大类产
Numerical study was performed to evaluate the characteristics of combined heat transfer of radiation,conduction and convection in indirect near infrared ray (NI
肿瘤干细胞(cancer stem cells,CSC)假说认为肿瘤的发生和维持由一小部分具有自我更新和多向分化能力的CSC决定,其与肿瘤的复发转移和耐药等密切相关。胰腺癌CSC于2007年首次
该文结合千岛湖明珠花园地基强夯处理实例,介绍了强夯法在大面积爆破碎石填土地基中的应用及技术参数,并通过试验结果的分析,说明了强夯法在处理大面积填土非均匀地基的效果
结合钱塘江标准塘杭州郊区段六期工程南北塘Ⅰ标桩号0-452~0+006段施工的实践,从工作原理、施工工艺、质量控制等角度出发,对塑料排水板堆载预压法处理标准塘堤身淤质软弱基