Embedian, Inc.
103
SMARC-iMX8M Computer on Module User’s Manual v.1.0
SMARC‐iMX8M
height information from Carrier board Top side to tallest
Module component is shown in Figure 19:
SMARC‐iMX8M
Minimum “Z”
Height:
Figure 19. SMARC‐iMX8M Minimum “Z” Height
The
SMARC
connector board‐to‐board stack heights that are available may
result in the use of non‐standard spacer lengths. The board‐to‐board stack
heights available include 1.5mm, 2.7mm and 5mm. Of these three, only the
spacer for the 5mm stack would likely be a standard length.
When a 1.5mm stack height Carrier board connector is used, there shall not
be components on the Carrier board Top side in the Module region.
Additionally, when 1.5mm stack height connectors are used, there should
not be PCB traces on the Carrier top side in the Module shadow. This is to
prevent possible problems with metallic Module heat sink attachment
hardware that may protrude through the Module.
If Carrier board components are required in this region, then the Carrier
components must be on the Carrier Bottom side, or a taller
Module‐to‐Carrier connector may be used. Stack heights of 2.7mm, 3mm,
5mm and up are available.
TOP Side
Component 3mm
Max
Module PCB 1.2mm
BOT Side
Component 1.3mm
Max
Carrier PCB 1.6mm
Typ
1.5mm
Min
5.7mm
Min
Carrier
Connector