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STDA21C SERIES


20W Desktop Power Supply for I.T. Equipment


  • Wide Operating Voltage 90 to 264 VAC, 47 to 63Hz 
  • IEC-320-C6 input inlet 
  • Optional Output Connector (See appendix) 
  • Single Output
  • Class I system 
  • Energy Efficiency DoE VI and RoHS2 compliance

Specifications

 

 

3 Year Warranty

 

Approvals: 

 

Single Output

Model Number

Range of Fixed Voltage

Max. Output Current

Total Regulation

Maximum Output Power

STDA21C-S02

5 ~ 6 VDC

3.00 ~ 2.50 A

±5%

15W

STDA21C-S03

6 ~ 8 VDC

2.30 ~ 1.87 A

±5%

15W

STDA21C-S04

8 ~ 11 VDC

2.50 ~ 1.81 A

±5%

20W

STDA21C-S05

11 ~ 13 VDC

1.81 ~ 1.53 A

±4%

20W

STDA21C-S06

13 ~ 16 VDC

1.53 ~ 1.25 A

±4%

20W

STDA21C-S08

21 ~ 27 VDC

0.95 ~ 0.74 A

±3%

20W

STDA21C-S09

27 ~ 33 VDC

0.74 ~ 0.60 A

±3%

20W

STDA21C-S10

33 ~ 40 VDC

0.60 ~ 0.50 A

±3%

20W

 STDA21C-S11

40 ~ 48 VDC

0.50 ~ 0.41 A

±3%

20W

STDA21C-S02~S07 are required to use AWG#18 / 4FT output cable.

STDA21C-S08~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

 

 

20

W

Low Line Input Current

Full load, Vin=100VAC

 

0.5

 

A

High Line Input Current

Full load, Vin=240VAC

 

0.2

 

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

 

 

0.75

mA

Efficiency

Full Load, Vin=230VAC

81.4

 

87

%

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

 

 

8

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

Dielectric Withstanding Voltage(P-G)

Primary to PE

 

 

2121

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

 

 

2000

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 Derating Chart

Note:

  1. Dimensions are shown in mm & inch
  2. Weight: approx. 170g 
               (Exclude the input cord)
  3. Optional output connector.

Note:

1. Operating Temperature: 0 to 70°C

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

 

Datasheet PDF