LST EN 60191-4-2014 半导体器件的机械标准化. 第4部分: 半导体器件包封装外形的编码系统和分类形式(IEC 60191-4-2013)
Mechanical standardization of semiconductor devices - Part 4: Coding system and classification into forms of package outlines for semiconductor device packages (IEC 60191-4:2013)