PCBA不良分析.ppt

文档介绍：Defect mode: BURNTVersion:加温过度
Defect mode: CleanlinessVersion:不洁Description:洁净度不够,如有助焊剂残留等
Defect mode: cold solderVersion:冷焊
Defect mode: ContaminationVersion:玷污Description:污染
Defect mode: coplanarityVersion:不共面
Defect mode: Defective fan PCBA Version:风扇线路板故障
Defect mode: DelaminationVersion:分层Description:PCB组装后分层
Defect mode: DewettingVersion:去湿Description:焊盘或端子,引脚不沾锡
Defect mode: Excess solderVersion:焊料过多
Defect mode: Excessive lead lengthVersion:引脚过长