Deals with general philosophy of flat-based devices.
IEC 60191-1B:1970 history
2018IEC 60191-1:2018 Mechanical standardization of semiconductor devices - Part 1: General rules for the preparation of outline drawings of discrete devices
2007IEC 60191-1:2007 Mechanical standardization of semiconductor devices - Part 1: General rules for the preparation of outline drawings of discrete devices
1966IEC 60191-1:1966 Mechanical standardization of semiconductor devices. Part 1 : Preparation of drawings of semiconductor devices