Build Better Products Faster

Ultra Librarian is a free online resource to help take the busy work out of the design process by providing the largest amount of CAD models available for download.

  • Quickly find verified parts in our ever-expanding database of verified parts from the leading component manufacturers
  • Receive unlimited access to FREE schematic symbols, footprints, and 3D STEP models in your native CAD format
  • Get back to what matters most; innovation, not part creation


  • Built to globally recognized industry standards from IPC - 7351B
  • Works directly with your preferred CAD Tool
  • Symbols, Footprints, and 3D Models created by the same designer to avoid inconsistencies in every step of the design process
  • Datasheets, pricing options, and specs available in one convenient place

Download a FREE Sample Part

TE Connectivity


25 System 50 HDR SRRA SHRD

FREE Download

Maxim Integrated


Smart Slave IC with Integrated Current and Temperature Sensors

FREE Download

Texas Instruments


DaVinci Digital Media Processor 609-FCBGA 0 to 95

FREE Download


Streamline your BOM Creation Process

Find the exact part you’re looking for, place it in your design, and submit your BOM directly to Digi-Key for a seamless design to purchase experience with UltraBOM™.


  • Search parts from Digi-Key
  • Link or place part directly in your design
  • Review status, availability, and cost throughout the design process
  • Submit the BOM to Digi-Key for purchase