Zno varistors have been widely used in electronic and electrical power devices and systems because of excellent nonlinear v - i characteristics and high absorbance of electric current surges . with the smt ( surface mounted technology ) development , traditional zno varistors can not meet the multilayer thin films lamination structure nappe varistor ceramics and metal electrode low temperature co - fire need . however , the best character of zno - v2o5 varistor can sinter in common furnace during lower temperature ( 900 ) , not only settling the problem relate to upon , but also saving energy sources Zno压敏电阻因其优异的v ? i非线性和较高的浪涌吸收能力而广泛应用在电子、电力设备系统上。然而,随着表面贴装技术( smt )的发展,传统的zno压敏陶瓷不能满足多层膜独石结构叠层压敏电阻元件陶瓷与金属电极低温共烧的需要。而zno ? v2o5系压敏陶瓷的最大优点是能用普通烧结炉在较低温度( 900 )下烧结,不仅解决了以上问题,还大大节约了能源。
At recent decade , accompany with surface mount technology printed - circuit board to produce fly of automation degree to soon develop , as to it ' s correspond of mass defect the inspection also put forward higher request , from in brief shoot to be like system to complicated " 3 - d " x optics to examine system , the automatic optical inspection is in great quantities adopt by the each production factory house 摘要在最近十年,伴随着表面贴装印刷电路板生产自动化程度的飞速发展,对其相应的质量缺陷检查也提出了更高的要求,从简单的摄像系统到复杂的" 3 - d " x光检测系统,自动光学检测系统大量被各生产厂家采用。
Based on current situation , background and developping feature of airborne avionics , aiming at development and manufacturing process of new avionics products in our institute , the current manufacturing management status and issues are analyzed in this paper , some suggestions on further developping of surface mount technology and production line program are given 从我国当前的制造业形势、背景及航空微电子制造技术的发展特点出发,结合我所新产品开发和制造流程分析了当前的生产管理状况,对航空业进一步发展表面组装技术及其流水线规划和生产管理流程再造提出了建设性的方法和途径。