The 1N5408 is a general-purpose diode having a number of desirable characteristics, making it suitable for a wide range of general-purpose applications. It comes in the DO201 package, which is slightly larger than the DO-41 package and can be used to replace numerous DO-41 diodes if more room is available.
https://www.easybom.com/blog/b/1n5408-diode-do-201ad-package-equivalents-and-pinout#1n5408-description