Library Splitting

Created: May 5, 2022 | Updated: May 5, 2022

The content of this page is applicable only to Altium Designer version 21. To select a previous version, use the version selector at the top of the navigation tree at the left.

For information about importing your existing libraries to a Workspace in Altium Designer 22 and above, see Importing Existing Libraries to Your Connected Workspace. For information about library splitting, see the Uncategorized Components section.

The Library Splitting dialog
The Library Splitting dialog


The Library Splitting dialog provides controls to set custom library grouping options for uncategorized components based on designator mapping by the component types and parameter-based splitting.


This dialog is accessed in the following ways:

  • Click the Library Splitting button in the Library Migrator when the file-based integrated library (.IntLib) is selected from the Source Libraries region. 
  • Click the Library Splitting button in the Library Migrator when the schematic library (.SchLib) is selected from the Source Libraries region. 
To learn more about accessing the Library Migrator, see Streamlined Migration of Existing Libraries to your Managed Content Server
The file-based libraries that are currently available to the software can be viewed and managed in the Available File-based libraries dialog, which is accessed from the File-based Libraries Preferences option on the    button menu in the Components panel.


  •  Parameter Grouping - enable this option to split components by parameter values. The drop-down lists all of the available parameters. 
  • Custom Designator Mapping - enable this option for designator mapping by the component type. 
    • Component Type - click to select the desired component type option from the drop-down. 
    • Designators - click to select the correct designator string option for the uncategorized components from the drop-down. 
    • Add - click this button to create a new mapping entry.
    •  - click this button to remove the selected mapping entry. 
  • Update - click this button to apply the Library Splitting configuration. 
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