BS IEC 60191-1:2007

1 Scope and object
2 Normative references
3 Terms and definitions
4 General rules for all drawings
  4.1 Drawing layout
  4.2 Dimensions and tolerances
  4.3 Methods for locating the datum
  4.4 Numbering of terminals
5 Additional rules
  5.1 Rules for device and case outline drawings
  5.2 Rules to specify the dimensions and positions
      of terminals
  5.3 Rules for gauge drawings
6 Inter-conversion of inch and millimetre dimensions
  and rules for rounding off
7 Rules for coding
Annex A (informative) Reference letter symbols
Annex B (normative) Standardization philosophy
Annex C (informative) Rules to specify the dimensions and
                      positions of terminals on a base drawing
Annex D (normative) General philosophy of flat base devices
Annex E (informative) Examples of semiconductor device drawing
Annex F (informative) Former rules for rounding off
Annex G (informative) Former rules for coding
Bibliography

Provides guidelines on the preparation of outline drawings of discrete devices.

IEC 60191-1:2007 gives guidelines on the preparation of outline drawings of discrete devices. For preparation of outline drawings of surface mounted discrete devices, IEC 60191-6 should be referred to as well. The main changes from the previous edition are as follows:
- requirement added for SI-dimensions for new drawings to be published;
- former rules concerning inch-dimensions are given in an informative annex;
- former rules for coding are given in an informative annex; incorporation of the supplements;
- updating of references and
- restructuring and renumbering.