SODIMM-200 Layout

[Kipton_Moravec]

I am looking to build a SODIMM-200 board that fits into a TE Connectivity / AMP 1717468-3 DIMM Connectors SODIMM 200P SDRAM-DDR.
https://www.mouser.com/datasheet/2/418/7/ENG_CD_1717468_E-2016187.pdf
Page 3 of 4 shows the board size and shape.

I found the schematic part, SODIMM-200 but no footprint.

Searching the past forum posts I found a reference to this:

GitHub - txyzinfo/Arduino-Due-SODIMM: Arduino-Due-SODIMM

This is close and in Eagle format. But it seems to be missing some of the holes.

I think I can build it myself but I am not 100% sure of the approach.
I think I have to make a PCB the shape of the board. Then I have to make a footprint for the 200 gold fingers.

Is that the way to do it? I do not think I can make the footprint the shape of the board because you cannot put parts on a footprint because the checker calls it an error.

Thanks in advance.

[3Dogs]

Yes, it’s just a small circuit board.
I’ve done one to adapt an ESP-32 to a Pi Compute Module footprint.

[StJG]

Hi
You can take a look: here GitHub - Wallbraker/SODIMM: Sodimm components for KiCad
(not my repo, just found it)

In general, having a footprint that has just all the gold fingers (as regular pads) is best way to go, because you can have a symbol on schematic and have consistent pad numbering.
Recent kicad versions, also allows you to have partial board contour inside footprint, so there is no risk that you move something by accident and board will not fit.

[Kipton_Moravec]

Thanks both of you. That will be my approach.