ISO/TS 10303-1646:2019 specifies the application module for
Footprint definition.

The following are within the scope of
ISO/TS 10303-1646:2019:

the
representation of a footprint, including functional and geometric;
and representation of a breakout pattern associated with a footprint.
Also provided is support to reference a part feature that an aspect of a footprint is dependent upon.

the hierarchical footprint definition providing support for complex arrangements and patterns.

• footprints, optionally linking the features of a part with corresponding padstacks;
• geometric models of footprint and breakout patterns;
• layer specific features of footprints.