When looking at the VXO78-1000 Series DC-DC Converter from CUI, you may see two different circuit designs on the PCB.
For example, the part number VXO78012-1000:
CUI confirms that they changed the IC on the VXO78-1000 series, which changed the PCB schematic in turn due to the raw material constraints.
Unfortunately, they indicated that since there would be no change to form, fit or function, they would not provide a PCN for this change. Although the products appear different, they should still function exactly the same.
The new IC & PCB solution was applied to the VXO78-1000 series after Feb 28th, 2022, which means products produced after March 2022 were the new version.
Applicable part numbers