Which part of the connector is the footprint based on?

Hello Mys_721tx,

Thank you for reaching out.

The Raspberry Pi Compute Module 5 (CM5108000) is designed to interface with specific connectors for optimal performance. Based on the datasheet, the module can be stacked onto either the 10164227-1001A1RLF or the 10164227-1004A1RLF connectors. Both are receptacles with identical footprints, with the only difference being their stacking height—10164227-1001A1RLF provides a 1.5mm stacking height, while 10164227-1004A1RLF offers a 4.0mm stacking height.

The PCB footprint provided on the part page SnapEDA - CM5108000: https://www.snapeda.com/parts/CM5108000/Raspberry+Pi/view-part/ is for the receptacle and is based on the connector datasheet: https://cdn.amphenol-cs.com/media/wysiwyg/files/drawing/10164227.pdf

For further clarification:
1- You can see the CM5108000 board layout on page 5 of the Compute Module 5 datasheet (https://datasheets.raspberrypi.com/cm5/cm5-datasheet.pdf).

2- The stacking configuration is illustrated on pages 4 and 9 of the Compute Module 5 IO Board datasheet (https://datasheets.raspberrypi.com/cm5/cm5io-datasheet.pdf).

By referring to these resources, you can ensure the correct integration of the CM5108000 module with the appropriate connector, considering your required stacking height.

Let me know if you have any further questions!