PCBA检验标准__第一部分SMT焊点(华为)VIP免费

Q/DKBA华为技术有限公司内部技术标准Q/DKBA3200.1-2003代替Q//DKBA3200.1-2001PCBA检验标准第一部分：SMT焊点2003年12月25日发布2003年12月31日实施华为技术有限公司HuaweiTechnologiesCo.,Ltd.版权所有侵权必究Allrightsreserved第2页共55页编号：时间：2021年x月x日书山有路勤为径，学海无涯苦作舟页码：第2页共55页目录前言..........................................................................................................................................................31范围.........................................................................................................................................................42规范性引用文件.....................................................................................................................................43产品级别和合格性状态.........................................................................................................................43.1产品级别........................................................................................................................................43.2合格性状态....................................................................................................................................54使用方法.................................................................................................................................................64.1图例和说明....................................................................................................................................64.2检查方法........................................................................................................................................64.3放大辅助装置及照明....................................................................................................................65术语和定义.............................................................................................................................................66回流炉后的胶点检查.............................................................................................................................77焊点外形.................................................................................................................................................87.1片式元件——只有底部有焊端....................................................................................................87.2片式元件——矩形或正方形焊端元件——焊端有3或5个端面..........................................107.3圆柱形元件焊端..........................................................................................................................167.4无引线芯片载体——城堡形焊端..............................................................................................207.5扁带“L”形和鸥翼形引脚........................................................................................................237.6圆形或扁平形（精压）引脚......................................................................................................287.7“J”形引脚....................................................................................................................................317.8对接/“I”形引脚.....................................................................................................................357.9平翼引线.................................