I've been working on a tool specifically to handle these messy PDF-to-Markdown conversions because I ran into the same issues with tables and multi-column layouts.

I’ve optimized https://markdownconverter.pro/pdf-to-markdown to handle complex PDFs, including those tricky tables that span multiple pages and 2-column formats that usually trip up tools like Docling. It also extracts embedded diagrams/images and links them properly in the output.

Full disclosure: I'm the developer behind it. I’d love to see if it handles your specific datasheets better than the models you've tried. Feel free to give it a spin!

Cool! But given that often electronics documentation is covered by NDAs, my preferred solution is local-first if at all possible.