Apalis Carrier Board Design Guide
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4
Mechanical and Thermal Consideration
4.1 Module Connector
The Apalis module is based around the MXM3 (Mobile PCI-Express Module) edge connector. This
connector has been adopted by various manufacturers for use in the embedded market. There are
many suitable connectors from different manufacturers available in different stacking height. If the
module is fixed to the carrier board with the MXM3 SnapLock system, a board stacking height
between the carrier board surface and Module bottom side of 3mm is required. In this case, the
MM70-314-310B1 from JAE is recommended.
Figure 64: MXM3 Connector
Figure 65: Board Stacking Height
Beside MM70-314-310B1 from JAE, MXM3 connectors are also available from other vendors. The
following list provides an overview of possible alternate parts. This list is not complete, there are
other options available.
Manufacturer Part Number
Spacer
height
Footprint compatibility
Remarks
JAE
MM70-314-310B1-x
3mm
Reference footprint is
based on this device
This is the connector that is currently used
on the Toradex reference boards
JAE
MM70-314-310B2-x
1.5mm
Different position of
alignment post
Not recommended for Apalis, since spacer
height is too small. Components on bottom
can be up to 1.8mm
ACES
91782-314xx-xxx
5mm
Different position of
alignment post
SnapLock not possible for this spacer
height. Module needs to be screwed down
Attend
125B-78C00
5mm
Different position of
alignment post
SnapLock not possible for this spacer
height. Module needs to be screwed down
Foxconn
AS0B826-S43B-7H
1.5mm
Different position of
alignment post
Not recommended for Apalis, since spacer
height is too small. Components on bottom
can be up to 1.8mm
Foxconn
AS0B826-S55B-7H
2.7mm
Different position of
alignment post
SnapLock not possible for this spacer
height. Module needs to be screwed down
Foxconn
AS0B826-S78B-7H
5mm
Different position of
alignment post
SnapLock not possible for this spacer
height. Module needs to be screwed down
Speedtech
B35P101-0xx1x-H
1.56mm
Different position of
alignment post
Not recommended for Apalis, since spacer
height is too small. Components on bottom
can be up to 1.8mm
Speedtech
B35P101-0xx2x-H
2.76mm
Different position of
alignment post
SnapLock not possible for this spacer
height. Module needs to be screwed down
Speedtech
B35P101-0xx3x-H
5.06mm
Different position of
alignment post
SnapLock not possible for this spacer
height. Module needs to be screwed down
Yamaichi
CNU113-314-220x-VE
5mm
Different position of
alignment post
Automotive graded with Latch Lock.
SnapLock not possible for this spacer
height. Module needs to be screwed down
Table 42: Alternate MXM3 connectors
Carrier Board
Apalis Module
Spacer
MXM Connector
3
m
m