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September 5, 2026
Question

Hardware Discrepancy on NUCLEO-F767ZI: U6 LDO footprint is 8-pin, but schematic shows 6-pin

  • September 5, 2026
  • 0 replies
  • 10 views

Hi everyone,

I am currently working on repairing my NUCLEO-F767ZI board (Revision: [MB1137 Rev B]). The 3.3V LDO regulator (U6) was damaged and needs to be replaced.

While working on it, I found a hardware discrepancy:

  • According to the official schematic, U6 is specified as LD39050PU33R (a 6-pin DFN package).

  • However, on my physical board, the PCB footprint for U6 clearly has 8 pads.

  • The damaged original IC I removed is an 8-pin package with the marking code "PH 2kE".

Since a 6-pin IC cannot fit on this 8-pin footprint, has anyone encountered this before? Could you please help me identify the correct 8-pin LDO part number to replace it?

I have attached pictures of the physical 8-pin IC and the 8-pad PCB footprint for reference.

Any advice would be greatly appreciated. Thanks in advance!
 

Figure 1: The removed original 8-pin LDO IC with the marking code "PH 2kE".
Figure 2: The physical 8-pad PCB footprint for U6 on the NUCLEO-F767ZI board.