The STM32F410CBU6: The 36 I/O lines in a 48-UFQFN package (7x7 mm with exposed pad) keep the board area tight while allowing thermal dissipation through the pad via stitch.
For production programs that require multi-year supply assurance, this part carries no imminent obsolescence risk. The base product number STM32F410 covers the family; density and package variants share the same core and peripheral set, simplifying a pin-compatible drop-in if a future BOM revision needs more Flash or a different package.