STFA31 SERIES


30W Open-Frame Power Supply for I.T. Equipment


  • Wide Operating Voltage 90 to 264 VAC, 47 to 63 Hz
  • Internal EMI filter
  • Single Output
  • Input Surge Current, Over Voltage and Over Load protection
  • Free Air Convection
  • Class I, Flamability Rating: UL94-1

Specifications

 

 

3 Year Warranty

 

Approvals: 

 

Single Output

Model Number

Output Voltage

Output Current

Total Regulation

Maximum Output Power

STFA31-S02

5 ~ 6 VDC

4.00 - 3.33 A

±5%

20W

STFA31-S03

6 ~ 8 VDC

3.83 - 2.87 A

±5%

23W

STFA31-S04

8 ~ 11 VDC

3.38 - 2.45 A

±5%

27W

STFA31-S05

11 ~ 13 VDC

2.73 - 2.30 A

±5%

30W

STFA31-S06

13 ~ 16 VDC

2.30 - 1.88 A

±5%

30W

STFA31-S07

16 ~ 21 VDC

1.88 - 1.43 A

±5%

30W

STFA31-S08

21 ~ 27 VDC

1.43 - 1.11 A

±3%

30W

STFA31-S09

27 ~ 33 VDC

1.11 - 0.91 A

±3%

30W

STFA31-S10

33 ~ 40 VDC

0.91 - 0.75 A

±3%

30W

STFA31-S11

40 ~ 48 VDC

0.75 - 0.62 A

±3%

30W

 

 

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

 

 

30

W

Low Line Input Current

Full load, Vin=100VAC

 

0.6

 

A

High Line Input Current

Full load, Vin=240VAC

 

0.25

 

A

Low Line Input Inrush Current

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

 

 

18

A

High Line Input Inrush Current

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

 

 

43

A

Safety Ground Leakage Current

Vin=240VAC, Fi=60Hz

 

 

0.75

mA

Efficiency

Full Load, Vin=230VAC

78

 

85

%

Line Regulation

Full Load, Vin=100~120VAC

0.5

 

1

%

Load Regulation

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

3

 

5

%

Over Voltage Protection

Over Voltage Protection

112

 

132

%

Over Load Protection

Recovers automatically after fault condition is removed

110

 

150

%

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

 

 

2

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

 

 

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 Drawing & Technical Charts

    

Note:

  1. Dimensions are shown in inches or mm.
  2. Weight: 85gs approx.
  3. Input connector mates with Molex housing 09-50-3031 and Molex 2478 series crimp terminal.
  4. Output connector mates with Molex housing 09-50-3041 and Molex 2478 series crimp terminal

 

Input Voltage Derating Curve

Temperature Derating Curve

1. Operating Temperature: 0 to 70°C

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

 

STFA31 - MEPOS ELECTRONICS
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