EN 60191-6-3-2000 半导体器件的机械标准化.第6-3部分:表面安装半导体器件封装外形图绘制的一般规则.四面扁平部件封装尺寸的测量方法 IEC 60191-6-3-2000
Mechanical Standardization of Semiconductor Devices - Part 6-3: General Rules for the Preparation of Outline Drawings of Surface Mounted Semiconductor Device Packages - Measuring Methods for Package Dimensions of Quad Flat Packs (QFP)