ZU/ZT-43
5 Assembling and
Installation Method
5.1 Installation method
n
n
The unit can be mounted in any direction. Position them with
proper intervals to allow enough air ventilation. Ambient tempera-
ture around each power supply should not exceed the tempera-
ture range shown in derating curve.
Avoid placing the DC input line pattern lay out underneath the unit
because it will increase the line conducted noise. Make sure to
leave an ample distance between the line pattern lay out and the
unit. Also, avoid placing the DC output line pattern underneath
the unit because it may increase the output noise. Lay out the pat-
tern away from the unit.
YES
NO
Fig.5.1 Pattern wiring
5.2 Derating
n
n
n
By derating the output current, it is possible to operate the unit
from -20
to +71
(-20
to +85
at forced air cooling).
When unit mounted any way other than in drawings below, it is re-
quired to consider ventilated environments by forced air cooling
or temperature/load derating. For details, please consult our
sales or engineering departments.
It is necessary to note thermal fatigue life by power cycle.
Please reduce the temperature fluctuation range as much as pos-
sible when the up and down of temperature are frequently gener-
ated.
ZU/ZT
Fig.5.2 Derating curve
I
2
I
1
I
3
-
-
+
Power
supply
Power
supply
+
Load
Instruction
anual
M
DC-DC Converters PCB Mount type
