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Application note
APT0501
December 2011
www.microsemi.com
3.2
Mounting example.
Figure 6 shows the top view of a PCB
mounted on an SP4 power module, and
both mounted on a heat sink. Note that the
access holes in the PCB allow plenty of
room for installing the module mounting
screws.
fig 6: Power module assembly on heat sink and PCB.
4.
Mounting instructions if using a large PCB.
If a large PCB is used, additional spacers
between the PCB and the heat sink are
necessary. It is recommended to keep a distance
of at least 5 cm
between the power module and
the spacers (see fig 7). The spacers must have
the same height as the plastic posts
(17 mm
±0.5).
fig 7: Spacers used on large PCB.
SP4 POWER MODULE
Spacer
Spacer
Heat sink
≥
5cm
≥
5cm
17mm ±0.5