Installing Heatsink; Heatsink - AXIOMTEK SCM188 User Manual

SCM188 NXP i.MX 8M Plus ARM-based SMARC Module

2.3 Installing Heatsink

For optimum performance SCM188 has to be cooled by a passive heatsink optionally available
for ordering. For thermal dissipation, the heatsink enable the SCM188 components to dissipate
heat efficiently. All heat generating components are thermally conducted to the heatsink in order
to avoid hot spots. Below procedures illustrate how to install the heatsink on SCM188.

2.3.1 Heatsink

The heatsink is designed for the SCM188 module. The thermal pad on the heatsink is designed
to make contact with the necessary components (refer to the red marks in below drawing) on
the SCM188 module. When mounting the heatsink you must make sure that the thermal
pads on the heatsink make complete contact (no space between thermal pad and
component) with the corresponding components on the SCM188 module. This is
especially critical for SCM188 module that is with high CPU speed to ensure that the
heatsink acts as a proper thermal interface for cooling solutions.
This SMARC module has four assembly holes for installing heatsink. Use the four copper pillar
screws and four screws to secure the heatsink to the SCM188. Be careful not to over-tighten
the screws.
Board and Pin Assignments 7