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Quick Details

  • Place of Origin: Zhejiang, China (Mainland)
  • Brand Name: Steady
  • Model Number: SFS-20-24
  • Output Power: 1 - 50W
  • Output Type: Single
  • Input Voltage: AC170-264V
  • Output Voltage: 24V
  • Output Frequency: 47-63HZ
  • Output Current: 0.83A
  • Efficiency: 83%
  • Certification: CE
  • Guarantee: 1~ 2 years
  • Case material: Aluminium
  • Dimension: 160*30*20mm (L*W*H)
  • G.W: 0.20kg

Packaging & Delivery

Packaging Details it is packed by vacuum plastic bag to provent moisture and then put into the inner box, 60 pcs to a neutral carton.
Delivery Time 3-30days

Welcome,my friend! Glad to introduce   20w 24v LED power supply circuit diagram, LED power supply enclosure LED TV, power supply . If you have any questions, please don't hesitate to ask me.

 We control every aspect                                                       

Related Products

 Related Products                                                                  

FeaturesHigh number of economic type safety with series
3.3V, 5V, 7.5V, 9V, 12V, 15V, 24V, 27V,36V,  48V
MS(CY) Series                                             mini-size
CY-10W  CY-15W  CY-20W  CY-25W

MS-25W  MS-35W  MS-40W  MS-50W  MS-60W MS-75W MS-100W  MS-120W

MS-145W MS-150W  MS-200W MS-201W  MS-240W MS-250W  MS-300W

MS-320W MS-350W MS-400W

S Series

S-15W  S-25W  S-35W  S-40W  S-50W  S-60W  S-75W S-100W S-120W

S-145W  S-150W  S-200W  S-201W S-250W S-300W  S-350W

S-400W  S-500W  S-600W S-650W

SP/SCN Series                          PFC/Parallel Function
SP-500w  SP-600w  SCN-600w  SCN-800w  SCN-1200w  SCN-1500w
DinRail Series

MDR series

MDR-10  MDR-20  MDR-40  MDR-60  MDR-100

DR series

DR-15  DR-30  DR-45  DR-60  DR-75  DR-100  DR-120

SFS Series                                               Waterproof

SFS-10W  SFS-20W  SFS-30W  SFS-45W  SFS-60W SFS-80W

SFS-100W  SFS-120W  SFS-150W  SFS-200W SFS-250W

NE Series

NES series

NES-15  NES-25  NES-35  NES-50  NES-75  NES-100 NES-150

NES-200  NES-350
NED series
NED-35  NED-50  NED-75  NED-100
NET series

NET-35  NET-50  NET-75

Multiple Output Series

Dual output

D-30W  D-50W  D-60W  D-120W

Triple output

T-30W  T-50W  T-60W  T-100W  T-120W

Quad output

Q-60W  Q-120W

 Zhejiang Steady Electronic Technology Co., Ltd. is a high-tech enterprise which is engaged in the design, development, production switching power series products.  


The payment terms which we accept  L/C  T/T westion union and paypal !

We accept OEM and Sample order,MOQ IS 1PC .
 Here take 20W for example !  
Product Description


Features :


• Constant voltage design

• Universal AC input / Full range
• Withstand 300VAC surge input for 5 seconds
• Protections: Short circuit / Overload / Over voltage
• Cooling by free air convection

• Small and compact size

• Fully encapsulated with IP67 level (Note.7)

• Fully isolated plastic case

• Class Ⅱ power unit, no FG

• Class 2 power unit

• Pass LPS

• Suitable for LED lighting and moving sign applications  

• 100% full load burn-in test

• Low cost, high reliability

• 2 years warranty

Model SFS-20-5SFS-20-12SFS-20-15SFS-20-24
OutputDC Voltage5V12V15V24V
Rated Current4A1.7A1.3A0.83A
Current Range0~4A0~1.7A0~1.3A0~0.83A
Rated Power20W20W19.5W19W
Ripple & Noise (max.) Note.280mVp-p120mVp-p120mVp-p150mVp-p
Voltage Tolerance Note.3±5.0%±5.0%±5.0%±5.0%
Line Regulation±1.0%±1.0%±1.0%±1.0%
Load Regulation±2.0%±2.0%±2.0%±2.0%
Setup,Rise time Note. 6500ms, 20ms / 230VAC    500ms, 20ms / 115VAC at full load
Hold time (Typ.)50ms/230VAC          16ms/115VAC at full load
InputVoltage Range  Note.490 ~ 264VAC 127 ~ 370VDC
Frequency Range47~63HZ
AC Current(Typ.)0.55A/115VAC     0.35A/230VAC
Inrush Current (max.)COLD START 70A(twidth=215£g   s measured at 50% Ipeak) at 230VAC
Leakage Current0.25mA / 240VAC
ProtectionOver Load110 ~ 150% rated output power
Protection type : Hiccup mode, recovers automatically after fault condition is removed

Over Voltage  

5.75 ~ 6.75V  13.8 ~ 16.2V  17.5 ~ 21V  28 ~ 32V  
Protection type : Shut off o/p voltage, clamping by zener diode   
EnvironmentWorking Temperature-30 ~ +70°c (Refer to "Derating Curve" )
Working Humidity20~90% RH  Non-condensing
Storage temp.& Humidity-40~+80°C, 10~95%RH
Temp. coefficient±0.03%/°C (0~50°C)
Vibration10 ~ 500Hz, 2G 10min./1cycle, period for 60min. each along X, Y, Z axes

Safety & EMC

(Note 4.)

Safety StandardsUL879, UL1310, CSA C22.2 No. 207-M89, CAN/CSA C22.2 No. 223-M91, IP67 approved ; design refer to TUV EN60950-1
Withstand VoltageI/P-O/P:3KVAC
Isolation ResistanceI/P-O/P:>100M Ohms / 500VDC / 25°c/ 70% RH
EMC EmissionCompliance to EN55022 (CISPR22) Class B, EN61000-3-2 Class A, EN61000-3-3
EMC ImmunityCompliance to EN61000-4-2,3,4,5,6,8,11, EN55024, light industry level,  criteria A
OthersMTBF786.5Khrs min.      MIL-HDBK-217F (25°c)
Dimension160*30*20mm (L*W*H)
Packing0.20Kg; 60pcs/14.2Kg/0.62CUFT

1. All parameters NOT specially mentioned are measured at 230VAC input, rated load and 25°c of ambient temperature.
2. Ripple & noise are measured at 20MHz of bandwidth by using a 12" twisted pair-wire terminated with a 0.1uf & 47uf parallel capacitor.
3. Tolerance : includes set up tolerance, line regulation and load regulation.
4. Derating may be needed under low input voltage. Please check the static characteristics for more details.
5. The power supply is considered as a component that will be operated in combination with final equipment. Since EMC performance will be affected by the
complete installation, the final equipment manufacturers must re-qualify EMC Directive on the complete installation again.
6. Length of set up time is measured at first cold start. Turning ON/OFF the power supply may lead to increase of the set up time.
7. Suitable for indoor use or outdoor use without direct sunlight exposure. Please avoid immerse in the water over 30 minute.

Production Line

 Product Applications                                                                                                               


• Power tools series: Electric Saw, Drilling Machine, Ginder, Sand blast Machine, Puching Machine,Weeding Machine,Air Compressor etc. 

• Office series: Computer,Printer,LCD Monitor,Scanning Machine etc.

• Household Appliance series: Dust Collector,Fan Lamp or LED ,Sewing Machine etc.

• Kitchen Appliance series: Microwave Oven, Fridge, Freezr, Coffemarker etc.

• Industrial Equipemnt series: shipping,vehicle,metalhalide lamp,solar system,wind power generation ect.

• Electrical filed series: TV,VCRS,Radio ect.


Packaging & Shipping

we use 4 trips to reinforce our carton,the international standards package methods guaranteed our goods safety during transportation

Company Information

 we are a professional manufacturer of power supplies ,all of our products have approved CE


Our Services

1. Any inquiries will be replied within 24 hours;

2. Professional manufacturer , welcome to visit our website;

3. OEM/ODM available:

a) Print logo on our products

b) Customized specification

c) Customized color package box

d) Any your idea on our products,we can help you to design and put it into production

4. High qulity,fashion design,reasonable&competitive price,fast lead time

5. After-sale service:

a) All products will have been strictly quality checked in test house before packing

b) All products will be well packed before shipping

c) All products have 1-2 years warranty, and we sure the products will be free from maintenance within warranty period

6. Faster delivery:

Sample order in stock, and 3-7days for bulk production

7. Payment term:

 L/C  T/T  open account transaction,westion union & paypal

8. Shipping:

We have strong cooperation with DHL,TNT, UPS, FEDEX, EMS, china post air mail,

you also can choose your own shipping forwarder.

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China (Mainland) | Manufacturer, Trading Company
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The supplier’s transactions conduted via Alibaba.com in the past 6 months.
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Supplier's Trade Assurance Limit: US $73,000
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