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12
2019-03
11
2019-03
PCB孔无铜不良品质问题解析(友联鑫)
孔无铜属于pcb功能性问题,随着科技的发展PCB精度(纵横比)要求亦越来越来高,它不但给PCB厂带来的麻烦(成本与品质的矛盾),而且给下游客户埋下了严重的品质隐患!下面就此做简单分析,友联鑫线路板厂希望能对相关同仁有所启示和帮助! 一、鱼骨图分析 二、孔无铜的分类及特征 1. PTH孔无铜:表铜板电层均匀正常,孔内板电层从孔口至断口处分布都
1
2019-03
28
2019-02
27
2019-02
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