If a manufacturer provides 3D model data for download from its website, these models should not be duplicated in the KiCad library.
A link to the manufacturer model files may be added to the
README.md file within the 3D model directory.
If 3D model data provided by a manufacturer is of low quality or not available for public download, then these data may be added if the following criteria are met:
The contributor is the creator of the model data
The contributed files provide some advantage over the data supplied by the manufacturer