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Bug #4782

closed

ngff-breakount doesn't work for RM500Q

Added by laforge about 2 years ago. Updated over 1 year ago.

Status:
Resolved
Priority:
Normal
Assignee:
Target version:
-
Start date:
10/07/2020
Due date:
% Done:

100%

Spec Reference:

Description

It seems that (at least) Quectels first 5G modem in ngff form-factor (RM500Q) is a longer card type than what we designed the ngff-breakout for. Its width is 30mm, the length excluding connector is 48mm, (including connector: 52mm).

I would expect that more 5G modems, at least in the "early 5G days" actually will need this larger form-factor. This should be confirmed looking at [preliminary] data sheets.

I suppose we need to do a board spin with a larger PCB. That larger version then needs slightly more space between the NGFF slot and the 2.54mm pin connector, and a second SMT spacer for mounting the screw there.

While at it, we might also consier adding a 4th SMA connector, as the RM500Q now has four antenna connectors (MHF4)


Files

20201007_101506.jpg View 20201007_101506.jpg 175 KB laforge, 10/07/2020 08:16 AM
20201007_101521.jpg View 20201007_101521.jpg 1.17 MB laforge, 10/07/2020 08:16 AM
ngff-breakout_v3-obl.png View ngff-breakout_v3-obl.png 84.9 KB mschramm, 10/26/2020 06:16 PM
ngff-breakout_v3-3042-52.png View ngff-breakout_v3-3042-52.png 463 KB mschramm, 10/26/2020 06:16 PM
smt-post-2screw.jpg View smt-post-2screw.jpg 43.5 KB mschramm, 10/26/2020 10:56 PM
ngff-bo_v2-bottscrew.jpg View ngff-bo_v2-bottscrew.jpg 37.8 KB mschramm, 10/28/2020 03:19 PM
ngff-bo_v2-topscrew.jpg View ngff-bo_v2-topscrew.jpg 98.7 KB mschramm, 10/28/2020 03:19 PM
ngff-bo_v3-placement.png View ngff-bo_v3-placement.png 112 KB mschramm, 11/09/2020 03:09 PM
ngff-clip-anchor.jpg View ngff-clip-anchor.jpg 73.8 KB mschramm, 11/09/2020 04:18 PM
udoo-mounting-kit-pk.png View udoo-mounting-kit-pk.png 51.2 KB mschramm, 11/09/2020 05:05 PM
i-o-threads-spacer.jpg View i-o-threads-spacer.jpg 59.7 KB mschramm, 11/09/2020 05:05 PM
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