密级:内部公开DKBA3200.04-2009.122020-07-02版权所有,未经许可不得扩散第1页,共47页Page1,Total47DKBA华为技术有限公司内部技术标准DKBA3200.4-2009.12代替DKBA3200.4~2005.06代替Q/DKBA3200.4~9-2003PCBA检验标准第四部分:THD组件2009年12月31日发布2010年01月01日实施华为技术有限公司HuaweiTechnologiesCo.,Ltd.版权所有侵权必究Allrightsreserved密级:内部公开DKBA3200.04-2005.062020-07-02版权所有,未经许可不得扩散第2页,共47页Page2,Total47目录前言.......................................................................41范围.......................................................................62规范性引用文件.............................................................63元器件安装.................................................................63.1元器件安装——方向.......................................................................63.1.1元器件安装——方向——水平.............................................................73.1.2元器件安装——方向——垂直.............................................................73.2元器件安装——引脚成型...................................................................93.2.1器件插装——引脚成型——弯曲...........................................................93.2.2元器件安装——引脚成型——应力释放(支撑孔)............................................103.2.3元器件安装——引脚成型——损伤........................................................113.3元器件安装——轴向引线——水平插装......................................................123.3.1支撑孔...............................................................................123.3.2非支撑孔.............................................................................133.4元器件安装——轴向引线——垂直插装......................................................143.4.1支撑孔...............................................................................143.4.2非支撑孔.............................................................................153.5元器件安装——径向引线——水平插装......................................................163.6元器件安装——径向引线——垂直插装......................................................173.6.1元器件安装——径向引线——垂直插装——有垫片时........................................183.7元器件安装——双列直插器件(DIP)、单列直插器件(SIP)、插座.............................193.8元器件安装——连接器....................................................................213.9元器件安装——紧固件——高功率..........................................................223.10元器件安装——引线跨越导体............................................................233.11元器件安装——焊料填充孔阻塞..........................................................243.12散热片安装...........................................................................253.12.1散热片安装——一般检查...............................................................263.12.2散热片安装——绝缘体和导热混合物......................................................273.12.3散热片安装——接触性.................................................................283.13散热片安装—粘贴偏移..................................................................28密级:内部公开DKBA3200.04-2005.062020-07-02版权所有,未经许可不得扩散第3页,共47页Page3,Total474元器件固定................................................................294.1元器件固...