KiCad Symbol Generator

Drawing a symbol in the KiCad Symbol Editor means reading the pin table, placing every pin, and typing names and electrical types one at a time. PartSpark does that from the datasheet: it writes a .kicad_sym file with correct pin numbers, names, and electrical types for ERC, and fills in the Footprint field so the symbol is ready for the PCB editor the moment you place it in the schematic.

  • Modern s-expression .kicad_sym output for KiCad 6 and later (examples tested in KiCad 10)
  • Electrical types set per pin so ERC catches real wiring errors
  • Footprint field pre-linked to the generated .kicad_mod
  • Refine pin names or sides in plain English without regenerating

Live generator

Generate a KiCad symbol now

Type the part number or upload the datasheet. Download the .kicad_sym file and add it to your symbol library table.

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 every pin number, name, and electrical type in the pin map with the datasheet pin table. Fix mistakes in plain English, for example “pin 12 is RESET, active low”.

  3. [03]

    Add to KiCad

    Add the .kicad_sym under Preferences → Manage Symbol Libraries. Put the .kicad_mod in a .pretty folder and add it under Manage Footprint Libraries with the nickname ProtoFlow.pretty, which is what the symbol’s Footprint field points to, or change that field to your own library name.

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, and you should.
  • Multi-function pins keep their alternate names in one label (for example PC6/RESET/PCINT14). Shorten them in the refine box if you prefer.
  • 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

How do I add the generated symbol to KiCad?
Open Preferences → Manage Symbol Libraries, add the downloaded .kicad_sym as a new library row (global or project scope), and the part appears in the Add Symbol dialog. Its Footprint field points at ProtoFlow.pretty:<footprint name>, so register the footprint’s .pretty folder under Manage Footprint Libraries with that nickname, or edit the field to match your own library.
Will the symbol pass KiCad ERC?
Pins carry electrical types (power input, output, bidirectional, passive, and so on) taken from the datasheet, so ERC runs meaningfully. Always review the pin map shown after generation before trusting it in a production schematic.
Can I fix one wrong pin without starting over?
Yes. Type the correction in the refine box, for example "pin 12 is RESET, active low", and the same symbol is revised with the footprint link kept intact.

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 Schematic Symbol Generator · AI PCB Footprint Generator · KiCad Footprint Generator