heatsink as part of 8MPLUSLPD4-CPU

[rjm]

Upon delivery of 8Mplus EVK base board, the included SoM 8MPLUSLPD4-CPU comes with a heatsink which is diagonally mounted via two screws.

Of course, this heatsink is not part of the Excel BOM-file, because it's not part of the soldering process.

I don't find a similar heatsink with a diagonal hole distance of 75.4 mm (29.7"). Therefore I'd appreciate it to know manufacturer and order ID.

[rjm]

As an alternative, I could also utilize a smaller heatsink. It seems that the PCB takes some some free space around the CPU for a heatsink (or fan?) with 20x20 mm dimensions into account. The below detail of the drawing shows an extra outline dimension with exactly this size, with holes (1,5 mm) having 18 mm distance.

I have marked the holes in red color.

Or is this considered as an option for mounting of heatsink on the back side, through the quadratic hole into the BB? Nevertheless, anyone of NXP did suggest the quadratic hole in the BB for as to aid in better airflow.

Hints are highly appreciated...