
AUG 25, 2006 revised to MAR 19, 2007
Page 9 of 70
www.power-one.com
SQ24 Series DC-DC Converter Data Sheet
18-36 VDC Input; Standard Outputs from 1-12 VDC
SQ24T/S04120 (12 Volts Out)
Ambient Temperature [°C]
20
30
40
50
60
70
80
90
L
o
ad
C
u
rr
ent
[
A
dc]
0
1
2
3
4
5
500 LFM (2.5 m/s)
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
30 LFM (0.15 m/s)
Fig. 12V.1: Available load current vs. ambient air temperature
and airflow rates for SQ24T04120 converter with B height pins
mounted vertically with Vin = 24V, air flowing from pin 3 to pin 1
and maximum FET temperature
≤ 120°C.
Ambient Temperature [°C]
20
30
40
50
60
70
80
90
L
o
ad
C
u
rr
ent
[
A
dc]
0
1
2
3
4
5
500 LFM (2.5 m/s)
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
30 LFM (0.15 m/s)
Fig. 12V.3: Available load current vs. ambient temperature and
airflow rates for SQ24S04120 converter mounted vertically with
Vin = 24V, air flowing from pin 3 to pin 1 and maximum FET
temperature
≤ 120°C.
Ambient Temperature [°C]
20
30
40
50
60
70
80
90
L
o
ad
C
u
rr
ent
[
A
dc]
0
1
2
3
4
5
500 LFM (2.5 m/s)
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
30 LFM (0.15 m/s)
Fig. 12V.2: Available load current vs. ambient air temperature
and airflow rates for SQ24T04120 converter with B height pins
mounted horizontally with Vin = 24V, air flowing from pin 3 to pin
1 and maximum FET temperature
≤ 120°C.
Ambient Temperature [°C]
20
30
40
50
60
70
80
90
L
o
ad
C
u
rr
ent
[
A
dc]
0
1
2
3
4
5
500 LFM (2.5 m/s)
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
30 LFM (0.15 m/s)
Fig. 12V.4: Available load current vs. ambient temperature and
airflow rates for SQ24S04120 converter mounted horizontally
with Vin = 24V, air flowing from pin 3 to pin 1 and maximum FET
temperature
≤ 120°C.