激光横向切割长度对片式电阻阻值影响的实验研究  

Experimental study of the effect of laser transverse-cutting length on resistance of chip resistor

作　　者：王志娟[1] 汤建华[1] 于前洋[1] 

机构地区：[1]中国科学院长春光学精密机械与物理研究所,吉林长春130033

出　　处：《激光杂志》2005年第1期35-36,共2页Laser Journal

摘　　要：激光在片式电阻上的横向切割长度对阻值影响较大 ,合理设计其长度能够以较低成本提高激光调阻精度及调阻效率。通过实验数据分析得出激光横向切割的长度变化率与阻值变化率之间的定量结论 ,并拟合了有效横向切割长度的阻值变化率与切割长度变化率之间的关系函数 ,二者能够为提高调阻精度和调阻效率提供控制依据。The laser cutting that is vertical to the current flow,called transverse-cutting,increases the resistance quickly.Designing its length reasonably can improve the trimming precision and yield efficiency at a low cost.Through analyzing the experimental data,the quantitative dependence of resistance varying-ratio on cutting-length varying-ratio of transverse-cutting is gotten,and the function of them when cutting-length varying-ratio is less than 55% is fitted.They both can provide the control basis for improving the trimming precision and yield efficiency.

关 键 词：激光调阻 横向切割 长度变化率 阻值变化率 

分 类 号：TN2[电子电信—物理电子学]