Heatsink mounting information

TN1037

4/24

DocID024655 Rev 3

1

Heatsink mounting information

Although the SLLIMM-nano is designed to drive electric motors up to 100 W in open air, an

external heatsink can be mounted to improve its thermal performance.

This section provides some basic guidelines and the main specifications for ensuring safe

heatsink mounting, preventing the application of excessive force to the device and taking

into account the following suggestions:

• Avoid applying excessive pressure to the SLLIMM-nano, as it could damage the module

and cause saturation of thermal dissipation capability

• Smooth the surface by removing burrs and protrusions of indentations to ensure good

contact between the SLLIMM-nano and the heatsink

• Do not touch the heatsink when the application is running to avoid burn injury

1.1

Main specifications

Table 1 provides the main parameters to be used during the heatsink mounting process.

Device and heatsink flatness are prescribed as seen in

Figure 2 and Figure 3.

Table 1. Mounting force and heatsink flatness specifications

Item

Condition

Min.

Typ.

Max.

Unit

Device flatness

See

Figure 2

0+75

μm

Heatsink flatness

See

Figure 3

-50

+100

μm

Mounting force

(compression)

Force applied to leads standoff (see

Figure 4)

20

30

40

N

Force applied to plastic body (see

Figure 5)

60

70

80

N

Mounting torque

(M3 screw)

0.40

0.55

0.70

Nm