序进应力在线加速退化模型研究  

Online degradation model based on process-stress accelerated test

作　　者：郭春生[1] 万宁[1] 马卫东[1] 熊聪[1] 张光沉[1] 冯士维[1] 

机构地区：[1]北京工业大学电子信息与控制工程学院,北京100124

出　　处：《物理学报》2011年第12期628-632,共5页Acta Physica Sinica

摘　　要：针对线下参数退化模型由于温度冲击而引入误差的问题,基于在线序进应力加速退化实验,建立了在线参数退化模型,提高了以参数变化为计算基础的参数退化模型的准确性.并以3CG120型高频晶体管为例,在150—230℃范围内进行了在线序进应力加速实验.利用建立的在线参数退化模型,得到3CG120型高频晶体管的寿命误差为6.5%,比线下参数退化模型的误差(23.2%)要小.An online degradation model is presented,in which is avoided the error in parameter degradation accelerated test,which is caused by temperature shock during parameter measurement.Through the measurement with avoiding the error parameter,the parameter degradation model can be more accurate.To demonstrate the application of the method,a kind of mature product,3CG120,is tested in a temperature range of 150—230 ℃ under online process-stress.Then the error of lifetime is obtained by utilizing the online model to be about 6.5%,much less than that of the old model （23.2%）.

关 键 词：序进应力加速实验 参数退化 在线测量 

分 类 号：TN306[电子电信—物理电子学]