Schemeit

Scheme-it is a free, web-based schematic capture tool provided by Digi-Key Electronics. It enables users to create, edit, and share circuit diagrams by dragging symbols onto a canvas, wiring nets, and annotating component names and values. The editor is designed for quick ideation, documentation, and communication of electronic designs rather than for advanced PCB layout or simulation.

A key feature of Scheme-it is its integration with Digi-Key’s component catalog. Users can search for parts by keyword or Digi-Key catalog number, insert symbols into schematics, and view associated data such as datasheets and part pages. Each component entry is linked to Digi-Key’s product information, helping with part selection and procurement. The schematic symbols cover a broad range of components, including passive devices, semiconductors, connectors, and sources, making it suitable for many hobbyist and educational projects.

Projects can be saved to a Digi-Key account, enabling retrieval and collaboration. Scheme-it supports sharing via a URL, allowing others to view or review a schematic without requiring local files. Export options typically include image formats such as PNG or PDF, and users can generate a bill of materials (BOM) from the schematic, often with links to the corresponding Digi-Key catalog entries to assist procurement.

Scheme-it is intended as an accessible, browser-based entry point for creating circuit diagrams and documenting designs. It is not a full-featured EDA suite for professional PCB design or circuit simulation. Users needing advanced analysis or layout capabilities are advised to use dedicated tools and import or reference Scheme-it schematics as needed.