STFA31 SERIES
30W Open Frame Power Supply for I.T. Equipment
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Wide Input Voltage 90 to 264 VAC, 47 to 63Hz
Single Output
Output voltage available from 5 to 48 VDC
Molex Connector (2 pins)
Input connector mates with Molex housing 09-50-3031 and Molex 2478 series crimp
terminal
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Output connector mates with Molex housing 09-50-3041 and Molex 2478 series crimp
terminal
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Input Surge Current, Over Voltage and Overload Protection
All units are 100% burned in and tested
Size: 1.5 "x4"x 0.83"
2 Year Warranty
Approvals:
Single Output
Model Number
STFA31-S02
STFA31-S03
STFA31-S04
STFA31-S05
STFA31-S06
STFA31-S07
STFA31-S08
STFA31-S09
STFA31-S10
STFA31-S11
Output Voltage
5 ~ 6 VDC
6 ~ 8 VDC
Output Current
4.00 - 3.33 A
3.83 - 2.87 A
3.38 - 2.45 A
2.73 - 2.30 A
2.30 - 1.88 A
1.88 - 1.43 A
1.43 - 1.11 A
1.11 - 0.91 A
0.91 - 0.75 A
0.75 - 0.62 A
Total Regulation
Maximum Output Power
5%
5%
5%
5%
5%
5%
3%
3%
3%
3%
20W
23W
27W
30W
30W
30W
30W
30W
30W
30W
8 ~ 11 VDC
11 ~ 13 VDC
13 ~ 16 VDC
16 ~ 21 VDC
21 ~ 27 VDC
27 ~ 33 VDC
33 ~ 40 VDC
40 ~ 48 VDC
Electrical Characteristics
Parameter
Input Voltage
Test Conditions
Min.
90
Typ.
Max.
264
63
Unit
VAC
Hz
Operating Voltage
Input Frequency
47
Output Power Range
Input Current (Low Line)
Input Current (High Line)
Vin=90 to 264VAC
0
30
W
Io=Full load, Vin=115VAC
Io=Full load, Vin=230VAC
Io=Full load, 25°C, Cool start,
Vin=115VAC
0.8
0.5
A
A
Low Line Inrush Current
12
26
84
0.5
3
15
A
Io=Full load, 25°C, Cool start,
Vin=230VAC
High Line Inrush Current
30
A
Efficiency
Io=Full Load, Vin=230VAC
Io=Full Load
78
88
1
5
132
150
4
%
%
Line Regulation
Load Regulation
Vin=230VAC
%
Over Voltage Protection
Over Current Protection
Transient Response
Hold-Up Time
112
110
%
%
Io=Full Load to Half Load, Vin=100VAC
Io=Full Load, Vin=110VAC
Io=Full Load, Vin=100VAC
Full Load, Vin=90VAC
Io=Full Load, Vin=240VAC
All output
No Load, Vin=240VAC
mS
mS
S
12
Start Up Time
2
1
0.75
0.04
0.3
Ripple & Noise (Peak to Peak)
Safety Ground Leakage Current
Temperature Coefficient
Power Consumption
0.5
0.4
%
mA
%/°C
W
-0.04
Conditions
Parameter
Test Conditions
Min.
0
Typ.
40
Max.
70
Unit
°C
Operating Temperature
Storage Temperature
Relative Humidity
Operating Temperature at 25°C , Calculated per MIL-HDBK-217F
De-rate linearly from 100% load at 40°C to 50% load at 70°C
-40
5
85
°C
95
%
Hrs
0.1M