Paste CSV data with the headers Reference, MPN and Quantity. Use one reference designator per row and Quantity = 1. Checking happens in your browser; the pasted BOM is not uploaded or saved.
What this tool checks
- Required columns and empty reference/part-number cells.
- Repeated reference designators and invalid per-reference quantities.
- For comparison: added, removed and changed references.
What still requires engineering review
This checker does not validate real component availability, footprint compatibility, electrical interchangeability or approvals. Expand grouped references before using it; ranges and multiple references in one cell are rejected rather than guessed.