2022-03-17 09:55 PM
2022-03-18 01:20 AM
Depends on where and how it was packaged.
Check the MSL label instructions.
Check the moisture cards in the package.
Bake-out the parts when needed.
2022-03-18 06:30 AM
Some info here:
https://www.st.com/resource/en/application_note/an2639-soldering-recommendations-and-package-information-for-leadfree-ecopack-mcus-and-mpus-stmicroelectronics.pdf
"Shelf life" isn't really a standard spec on chips. How long they last depends on how they're stored. It's generally not an issue.
