(3) Temperature Measuring Points in the case of Forced Air Cool-
ing (1m/s)
1
SU1R5
¡
In the case of forced air cooling, please have sufficient ventilation
to keep the temperature of point A in Fig.8.3 at 105
C
or below.
Please also make sure that the ambient temperature does not ex-
ceed 85
C
.
2
SUC1R5
¡
In the case of forced air cooling, please have sufficient ventilation
to keep the temperature of point B in Fig.8.4 at 95
C
or below.
Please also make sure that the ambient temperature does not ex-
ceed 85
C
.
8.2 SU/SUC3 Derating Curve
¡
If you derate the output current, you can use the unit in the tem-
perature range from -40
C
to the maximum temperature shown
below.
(1) In the case of Convection Cooling
(2) In the case of Forced Air Cooling (1m/s)
(3) Temperature Measuring Points in the case of Forced Air Cool-
ing (1m/s)
1
SU3
¡
In the case of forced air cooling, please have sufficient ventilation
to keep the temperature of point A in Fig.8.7 at 115
C
or below and
that of Point B at 120
C
or below.
Please also make sure that the ambient temperature does not ex-
ceed 85
C
.
2
SUC3
¡
In the case of forced air cooling, please have sufficient ventilation
to keep the temperature of point C in Fig.8.8 at 100
C
or below.
Please also make sure that the ambient temperature does not ex-
ceed 85
C
.
On-board type
Instruction Manual
G-44
SU.SUC
On-board type
Instruction Manual
G-45
SU.SUC
Fig.8.3 Temperature Measuring Point in the case of Forced Air Cooling
Fig.8.4 Temperature Measuring Point in the case of Forced Air Cooling
(Upper Surface of the Case)
Fig.8.5 Derating Curve for Convection Cooling (SU/SUC3)
Fig.8.6 Derating Curve for Forced Air Cooling (1m/s) (SU/SUC3)
Fig.8.7 Temperature Measuring Points in the case of Forced Air Cooling
Fig.8.8 Temperature Measuring Point in the case of Forced Air Cooling
(Upper Surface of the Case)
Point A
Point B (Center of the Case)
Ambient Temperature [
C
]
Lo
ad F
ac
to
r [
%
]
-40
-20
0
20
40
60
80
100
0
50
100
(85)
(71)
(55)
A
B
C
Ambient Temperature [
C
]
Lo
ad F
ac
to
r [
%
]
-40
-20
0
20
40
60
80
100
0
50
100
(85)
A
B
Output Voltage(V)
Input Voltage(V)
3.3
5
12
15
�
12
�
15
5
A
A
B
B
A
B
12
A
A
B
B
A
B
24
A
A
B
B
A
B
48
B
B
B
B
A
C
Output Voltage(V)
Input Voltage(V)
3.3
5
12
15
�
12
�
15
5
A
B
B
B
B
B
12
A
A
A
A
A
B
24
A
A
B
A
A
B
48
A
A
A
A
A
B
Point A Point B
Point C (Center of the Case)
