There are several different ways to manage third party libraries like this one. Using git clone is a great way to keep it up to date.

Launch KiCad and then click the “Symbol library editor” icon. Select “Manage Symbol Libraries” from the Preferences menu.

How you decide to manage the library(s) within KiCad is open to debate, but the way I prefer to use them is to pull them in to the Project Libraries, that way they are managed separately from the default libraries, this can be done as such:

Large number of symbol, footprint, and model libraries included. Applications and documentation have been translated to multiple languages. Digi-Key recognizes this trend and we are proud to offer a new KiCad library comprised of symbols and footprints created in-house by our own Digi-Key. The set of libraries corresponding to versions 4.x of KiCad software are no longer maintained. They are still available on GitHub although they have been archived to make them ready-only: kicad-library - Schematic symbols, 3D models and project templates. Individual.pretty repositories - PCB footprint libraries in individual repositories.

Kicad No Component Libraries Are Loaded As A

git clone https://github.com/Digi-Key/digikey-kicad-library.git into your preferred directory
Open KiCad
Import the symbols:
A. Open Symbol Editor or Schematic editor
B. Click on Preferences then on Manage Symbol Libraries…
C. Click on the Project Specific Libraries tab:
D. Click on the Add existing library to table button:
E. Navigate to the directory where you cloned the Digi-Key KiCad Library
F. Navigate to the digikey-symbols folder within digikey-kicad-library folder
G. At this point you can add one library at a time or all of the libraries. To add all of the libraries click on any one of the the libraries and then press Ctrl+a. This will select all of the libraries, then click the Open button.
H. You should now see the libraries in the table:
Import the footprints(similar process to symbols):
A. Open Footprint editor or PCB Layout
B. Click on Preferences then on Manage Footprint Libraries…
C. Click on the Project Specific Libraries tab:
D. Click on the Add existing library to table button:
E. Navigate to the directory where you cloned the Digi-Key KiCad Library
F. Expand the digikey-kicad-library folder and select digikey-footprints.pretty
G. Click OK
H. The digikey-footprints should now show in your library table

The instructions that follow explain how to import files you download from Ultra Librarian into KiCAD software.

To import a symbol library into KiCAD:

1. Open KiCAD and create a new project.

2. Open the project schematic file.

3. Select the Preferences > Component Libraries menu.

4.Click the Add button to add a new library.

5.Browse to select the symbols.lib file from your Ultra Librarian download. You have now added the new library and are ready to place the component on your KiCAD schematic.

To import a PCB footprint downloaded from Ultra Librarian:

1. Open the PCB file.

2. Select the Preferences > Footprint Libraries Manager menu items.

Your selection opens the PCB Library Tables screen.

3. Click the Project Specific Libraries button.

4. Click the Append Library button.

5. Enter the part number as the Nickname.

Kicad No Component Libraries Are Loaded Using

6. Set the path to the .pretty file of the Ultra Librarian export.

7. Click OK.

Kicad No Component Libraries Are Loaded For A

You have now added the footprint to the KiCAD Symbol Library and are ready to place the footprint on your schematic.