STUA250 SERIES

250W U-Bracket Power Supply for I.T. Equipment

• Wide Input Voltage 100 to 240 VAC, 47 to 63Hz,  

• Output Voltage Available 12, 24, 48VDC
• Internal EMI filter, 
• Active Power Factor Correction, 
• Zero Voltage Switching (ZVS) & High Efficiency Up to 93%,
• Dimensions: 4.18" x 6." x 1.54"
• Input Surge Current, Over Voltage and Over Load Protection 
• Single Output, Class I

2 Year Warranty

Approvals: 

Single Output

Product Number

Output Voltage

Max. Output Current

Total Regulation

Maximum

Output Power

STUA250-S05

12 VDC

18.33 A

5%

220W

STUA250-S08

24 VDC

10.42  A

3%

250W

STUA250-S11

48 VDC

5.21 A

2%

250W

Electrical Characteristics

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

Input Voltage

Operating Voltage

100

240

VAC

Input Frequency

47

63

Hz

Power Factor Correction

Io=Full load, Vin=90~260VAC

0.95

0.97

1.00

Output Power Range

Vin= 90 to 264 VA C

0

250

W

Input Current (Low Line)

Io=Full load, Vin=115 VAC

3.3

A

Input Current (High Line)

Io=Full load, Vin= 230 VAC

1.23

A

Low Line Inrush Current

Io=Full load, 25°C, Cool start, Vin=115VAC

12

15

A

High Line Inrush Current

Io=Full load, 25°C, Cool start, Vin=230VAC

25

30

A

Efficiency

Io=Full Load, Vin=230VAC

89

91

93

%

Line Regulation

Io=Full Load

0.5

1

%

Load Regulation

Vin=230VAC

3

5

%

Over Voltage Protection

112

132

%

Over Current Protection

110

150

%

Transient Response

Io=Full Load to Half Load, Vin=100VAC

4

mS

Hold-Up Time

Io=Full Load, Vin=110VAC

20

mS

Start Up Time

Io=Full Load, Vin=100VAC

0.3

1

2

S

Ripple & Noise (Peak to Peak)

Full Load, Vin=90VAC

0.5

1

%

Safety Ground Leakage Current

Io= Full Load, Vin=240VAC/60Hz

0.5

0.75

mA

Temperature Coefficient

All output

-0.04

0.04

%/°C

Conditions

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

Operating Temperature

0

70

°C

Storage Temperature

-40

85

°C

Relative Humidity

5

95

%

Operating Temperature at 25°C, Calculated per MIL-HDBK-217F

100

K Hrs

De-rate linearly from 100% load at 50°C to 50% load at 70°C

Approvals and Compliance

Parameter

Test Conditions

Min.

Unit

Dielectric Withstanding Voltage for Primary to secondary

Primary to secondary

4242

VDC

Dielectric Withstanding Voltage for Primary to Ground

Primary to ground

2121

VDC

Isolation Resistance

Test Voltage = 2100VDC

50

MΩ

EMI requirements for CISPR-11

Vin=220VAC

B

CLASS

EMI requirements for FCC PART-18

Vin=110VAC

B

CLASS

Safety UL/c-UL, TUV/T-mark, FCC, CE

UL 60950-1, EN 60950-1

n/a

n/a

Environmental

RoHS compliant

n/a

n/a

Mechanical and PIN out

PIN CHART

Note:

1. Dimensions are shown in mm.
2. Weight: 790gs approx.

3. Input connector mates with INKLE#DT-2G-B01W-02P and DINKLE#ESK750V-02P

4. Output connector mates with DINKLE#DT-2G-B01W-(04P or 06P) and DINKLE#ESK750V-(04P or 06P)