A shortage or an old introduction date does not establish that STM32F407 is discontinued. ST's STM32F407VG product page was marked Active when reviewed for this guide. Check the exact ordering code and any official product notice before choosing between continued sourcing, a qualified alternative and a board redesign.
Verify the part you actually use
ST's STM32F407VG page identifies the device as an active Cortex-M4 product and provides its documentation. That status is evidence for the referenced product page, not a guarantee that every package, temperature grade or orderable variant is available for immediate delivery.
Record the complete code from the BOM, including package and grade suffixes. Check product-change and discontinuation notices against that code. Preserve the notice date and affected identifiers when a lifecycle event is confirmed. Keep distributor availability, manufacturer lifecycle and a project's approved-parts status as separate records.
Compare alternatives against the application
Make a matrix of the functions the board uses: memory capacity, peripheral instances, timers, analog channels, communications, external-memory interfaces and debug connections. Compare pin assignments and alternate-function mappings against the schematic. A similar core and clock speed do not establish board compatibility.
Review supply requirements, reset behavior, boot configuration, clock sources and package dimensions. Check silicon errata relevant to the application. If a proposed part requires changes to peripheral routing or memory layout, classify it as a migration candidate and estimate the redesign work explicitly.
Plan firmware and manufacturing validation
Build the application for the candidate device and review startup code, linker settings, peripheral initialization and timing assumptions. Exercise the actual communication interfaces and any timing-sensitive control functions. Update programming tools, production scripts and test fixtures where the device identity or programming process changes.
Compare startup, power consumption, analog performance and behavior across the specified operating range. Keep the original device's acceptance results as a baseline. Approve the alternative only after the hardware and software owners have documented the supported configuration and closed any differences that affect the product.
Frequently asked questions
Is STM32F407 EOL because it is difficult to buy?
No. Availability and lifecycle are different. Verify the exact ordering code using ST's current product information and official notices.
Can another STM32F4 replace it without firmware changes?
Do not assume so. Review pinout, peripheral mapping, memory, startup configuration and errata before deciding what must change.
Request STM32F407 sourcing or alternatives with the full code, quantity and allowed design changes. Stock, price and lead time are confirmed in the quotation.