Datasheets for electronic components are always endangered, since vendors usually don’t keep them online once a product is EOL.
- 4d systems
- Diodes Inc.
- ON Semiconductor
- TT Electronics
- API Delevan
- IXYS IC
- Digikey: Links to vendor’s websites
- Farnell: Self-hosted, uses sequential ids: http://www.farnell.com/datasheets/<id>.pdf
- Mouser: Mix between self-hosted datasheets (modified by Mouser, last page appended to PDF) and external links
- Reichelt: Self-hosted
- RS Components: Self-hosted, random(?) hex ids, sometimes no datasheet at all