All of the above are – no credit card or trial required. Avoid shady “free PDF” sites; use manufacturer (.com, .edu, .org) or open hardware repositories (GitHub, GitLab, Hackaday.io).
If you need a (e.g., voltage regulator for 24V to 5V at 3A), tell me the part number or desired specs, and I can summarize its key voltage parameters from its free datasheet. robot technology voltage theme download free