AI Schematic Symbol Generator

A symbol generator is only useful if the pins are right. PartSpark builds schematic symbols from the manufacturer pin table itself: each pin gets its datasheet name, an electrical type for ERC, and a side that follows convention (power up, ground down, inputs left, outputs right). The matching footprint is generated in the same pass, so the symbol you place already knows which pad every pin lands on.

  • Pin names, numbers, and electrical types taken from the datasheet pin table
  • Readable pin placement, including multi-hundred-pin MCUs and FPGAs
  • Footprint generated alongside and linked pin-to-pad
  • Native KiCad .kicad_sym, plus Altium, EAGLE, and Allegro bundles

Live generator

Generate a schematic symbol now

Part number, datasheet URL, or PDF. Review the pin map on screen, then download the symbol for your EDA tool.

Up to 6 files / 20 MB each / 22 MB total

How to use it

Three steps, start to library.

  1. [01]

    Generate

    Type the manufacturer part number, or attach the datasheet PDF (or a photo of the pinout and package pages) for unusual parts. A generation takes about a minute.

  2. [02]

    Check the pins

    Compare pin numbers, names, electrical types, and sides with the datasheet. Ask for a different arrangement in the refine box if you prefer another layout.

  3. [03]

    Export

    Download the native KiCad symbol, the EAGLE .lbr, or the Altium and Allegro bundles. Each bundle has a README with the import steps.

Doing it by hand, or want to know what to check? Step-by-step guides: how to create a kicad symbol from a datasheet; how to turn a package drawing into a kicad footprint; how to check a generated symbol and footprint before fabrication.

Limits to know

What it won’t do for you.

  • Pin names and electrical types come from the datasheet’s pin table. Parts found by web search carry a warning to double-check the pinout.
  • Altium and Allegro symbols arrive as import bundles (.SchDoc, EDIF) that you convert to a library in those tools, not as finished libraries.
  • If the datasheet doesn’t dimension the package, the generator stops instead of guessing. Attach a clearer drawing or the vendor land-pattern note and try again.
  • Free accounts get the symbol and footprint. 3D STEP/WRL models are on paid plans.

The guide to checking a generated symbol and footprint before fabrication shows real cases where these limits mattered.

Example output

Real parts, checked against the datasheet.

These were generated from the part number alone, then every pin and pad was checked against the manufacturer datasheet. Download the files and open them in KiCad yourself.

FAQ

Common questions

What does the symbol generator need as input?
A manufacturer part number is enough for most parts; the AI locates and reads the datasheet. For unusual, obsolete, or pre-release parts, upload the PDF or a photo of the pin table and it works from that instead.
How are pins arranged on the generated symbol?
Power pins go to the top, ground to the bottom, inputs to the left, and outputs and bidirectional pins to the right, grouped by function where the datasheet makes that clear. If you want a different arrangement, describe it in the refine box and the symbol is revised with the same pin data.
Is the schematic symbol generator free?
Yes. A free account includes daily and monthly generation allowances. Paid ProtoFlow plans raise the limits and add premium models and 3D generation.

Need a different tool? AI KiCad Part Generator · Altium Designer Part Generator · EAGLE Library Generator · Cadence Allegro PCB Footprint Generator · Datasheet to Schematic Symbol Converter · AI PCB Footprint Generator · KiCad Symbol Generator · KiCad Footprint Generator