Embedian, Inc.
97
SMARC-iMX8MM Computer on Module User’s Manual
v. 1.2
SMARC
‐
iMX8MM
height
information
from
Carrier
board
Top
side
to
tallest
Module
component
is
shown
in
Figure
18:
SMARC
‐
iMX8MM
Minimum
“Z”
Height:
Figure
18.
SMARC
‐
iMX8MM
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
