Is the component STM32F411CEU6 SMD or thru hole?

Hi there,

Thanks for reaching out. Based on the ordering information
on page 141 of the datasheet, this part is a UFQFPN package and is SMD. If you're asking about the size of the device in general, it is 7mm x 7mm.

You may check the package specification and footprint layout on pages 127-128 of the datasheet.

I hope this helps. Let me know if you have any other questions.

Thanks!