STWA26 SERIES


25W Multi-Plug Wall-Mount Power Supply for IT Equipment


  • Wide Input Voltage 90 to 264 VAC, 47 to 63Hz
  • Interchangeable AC Plugs for US, European, UK, and Australia
  • Output Voltage Available From 5VDC Thru 48VDC
  • Approved as Limited Power Source (LPS) and Class II Insulation
  • Over Load Protection
  • Energy Efficiency DoE VI, CoC V5 (tier 2), and RoHS2 compliance

Specifications

 

 

3 Year Warranty

 

Approvals:  

 

Single Output

Model Number

Range of Fixed Voltage

Max. Output Current

Load Regulation 

Maximum Output Power

STWA26-S02

  5  ~  6 VDC

3.30 ~ 2.75 A

±5%

16.5W

STWA26-S03

  6  ~  8 VDC

3.33 ~ 2.50 A

±5%

20W

 STWA26-S04 

  8  ~ 11 VDC

2.75 ~ 2.00 A

±5%

22W

STWA26-S05

11 ~ 13 VDC

2.27 ~ 1.92 A

±5%

25W

STWA26-S06

13 ~ 16 VDC

1.92 ~ 1.56 A

±5%

25W

STWA26-S07

16 ~ 21 VDC

1.56 ~ 1.19 A

±5%

25W

STWA26-S08

21 ~ 27 VDC

1.19 ~ 0.92 A

±3%

25W

STWA26-S09

27 ~ 33 VDC

0.92 ~ 0.75A

±3%

25W

STWA26-S10

33 ~ 40 VDC

0.75 ~ 0.62A

±3%

25W

STWA26-S11

40 ~ 48 VDC

0.62 ~ 0.52A

±3%

25W

STWA26-S02~S09 are required to use AWG#18 /4FT output cable.

STWA26-S10~S11 are required to use AWG#20 /4FT output cable.

The regulation and efficiency will be changed by modified output cable.

 

Electrical Characteristics

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

Safety Approvals Input Voltage Range

Safety Approval & Specification in Label

100

 

240

VAC

Operate Voltage Range

 

90

 

264

VAC

Input Frequency

Sine wave

47

 

63

Hz

Output Power Range

See Rating Chart

 

 

25

W

Low Line Input Current

Full load, Vin=100VAC

 

0.70

 

A

High Line Input Current

Full load, Vin=240VAC

 

0.29

 

A

Low Line Input Inrush Current

Full load, 25°C, Cool start, Vin=100VAC

25

 

50

A

High Line Input Inrush Current

Full load, 25°C, Cool start, Vin=240VAC

50

 

120

A

Safety Ground Leakage Current

Vin=240VAC, Fi=60Hz

 

 

0.25

mA

Efficiency

Full Load, Vin=230VAC

82

 

88

%

Line Regulation

Full Load, Vin=100~120VAC

0.5

 

1

%

Load Regulation

Vin=230VAC, 10~90% Load Change at Condition

3

 

5

%

Over Load Protection

Nil. But, Output protected to short circuit conditions

Time of Transient Response

Io=Full Load to Half Load, Vin=110VAC

 

 

4

ms

Hold-Up Time

Full Load, Vin=100VAC

 

 

12

ms

Start Up Time

Full Load, Vin=100~240VAC

 

 

3

s

Ripple & Noise (Peak to Peak)

 

 

 

1

%

Temperature Coefficient

Full Load, Vin=100~240VAC

 

 

±0.04

%/°C

Dielectric Withstanding Voltage(P-S)

Primary to Secondary

 

 

4242

VDC

EMC Emission

Compliance to EN55022(CISPR22)

 

 

B

Class

 

 

 

Environmental

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

Operating Temperature

Derate linearly from 100% load at 40 to 50% load at 70

0

 

70

°C

Storage Temperature

 10~95% RH

-40

 

85

°C

Operating Humidity

 non-condensing

0

 

95%

RH

Storage Humidity

 

0

 

95%

RH

Electro Static Discharge

Air Discharge, IEC61000-4-2

 

 

8

KV

Electro Static Discharge

Contact Discharge, IEC61000-4-2

 

 

4

KV

Mean Time Between Failure

Operation Temperature at 25, Calculated per MIL-HDBK-217F

100K

 

 

h

Operating Altitude (Elevation)

All Condition

 

 

3000

m

Vibration

10~500Hz,10min./1cycle, 60min.each along X, Y, Z axes

 

 

5

G

Surge Voltage

  Line-Neutral

 

 

1

KV

Surge Voltage

  Line-PE & Neutral-PE

 

 

2

KV

 

Mechanical Diagram and Technical Chart

 

 

Note:

  1. Dimensions are shown in mm & inch
  2. Weight: approx. 200gs approx.
  3. Optional output connector:

       

 

 

 

 

Derating Chart:

1. Operating Temperature: 0 to 70°Ca

2. Derate linearly from 100% load at 40°C to 50% load at 70°C

 

STWA26 - MEPOS ELECTRONICS
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