电镀镍层对金属封装外引线弯曲疲劳性能的影响  

Effect of Nickel Electroplating on Bending Fatigue of Leads to Metallic Packages

作　　者：刘飞华[1] 沈卓身[1] 许维源[2] 

机构地区：[1]北京科技大学材料科学与工程学院,北京100083 [2]中国科学院电子学研究所,北京100080

出　　处：《电子元件与材料》2002年第11期22-23,33,共3页Electronic Components And Materials

摘　　要：笔者系统地研究了改善金属封装外引线抗弯曲疲劳的方法。发现各种类型的电镀镍层对外引线弯曲疲劳性能有不同的影响,其中在氨基磺酸镍镀液中,采用多波形电流电镀时外引线抗弯曲疲劳的性能最好。另外,用H2作为保护气体,对引线弯曲性能较差的镀覆亮镍的金属封装进行退火,也能明显改善外引线的抗弯曲疲劳能力。The approaches to control bending fatigue of the leads to metallic packages were investigated systematically. The effects of different nickel electroplating on the bending fatigue of the leads was examined. The bending fatigue can be controlled most efficiently when multi-wave current used in plating. In addition, the bending fatigue of leads to metallic packages plated with bright nickel can be controlled by annealing in hydrogen.

关 键 词：电镀镍层 金属封装 外引线 弯曲疲劳 退火 

分 类 号：TN405.96[电子电信—微电子学与固体电子学]