NuPower
TM
ULS-25-C01-S01 User Manual
Rev 1.0
5
2.3
HEAT SINKING
The NuPower ULS-25-C01-S01 is offered as a stand-alone module or with a kit, which also includes a fan-
cooled heatsink with an AC / DC adapter, and an interface cable.
Figure 3: The NuPower PA Kit offers “out-of-the-box” operation for the user. The fan-cooled heatsink
with an AC / DC adapter is shown with an example PA (NuPower ULS-25-C01-S01 not shown).
Caution: The use of external heat-sinking is required especially for those applications
requiring high duty cycle operation (e.g. continuous wave) or for extended on-time
testing. Operation without a proper heat sink under these conditions will cause
permanent damage to the product and will void the product warranty.
The external heatsink thermal resistance requirements are:
•
<0.35
˚
C/W for operation up to 40
˚
C ambient
•
<0.20
˚
C/W for operation up to 55
˚
C ambient
