Embedded Switch Mode Power Supplies (SMPS)

A switch mode power supply is a type of electronic circuit used to convert power. They are also known as switching-mode power supplies or SMPS for short. The typical topology of an SMPS is AC to DC conversion, although users may find other switches that feature an output of DC to DC voltage.



How do SMPS work?


For the power supply to transform its input voltage into an output voltage, the switch will turn on and off with high frequency. The inductors or capacitors within the device will then regulate the power to the device. This continuous switching of the capacitor maintains the voltage at the desired level and provides excellent efficiency.



How do SMPS convert AC to DC?


In the case of AC mains usage, the input voltage will be filtered the same way with a capacitor or inductor to regulate the power and give you the DC output.



Which SMPS is best for a desktop PC?


The power supply unit you use in your PC is important as it ultimately determines what other components you can use within it and the output in performance you get at the end. For high-end gaming PC builds you should aim for an efficiency rating of >80%. The higher the rating, the less electricity it consumes. The less electricity used means easier heat dissipation which keeps the PC cool and performing optimally.


Switching power supply units with higher efficiency and lower levels of heat dissipation are typically compact in nature, making them ideal for projects with limited space.



Where are SMPS used?



  • PC/Laptops


  • Mobile phone chargers


  • Security systems such as CCTV Cameras


  • Machine tool industries


...
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Description Price Output Voltage Series Output Current Power Rating Number of Outputs Input Voltage Mounting Type Package Type Length Width Depth Weight Efficiency Maximum Temperature
RS Stock No. 844-4010
Mfr. Part No.RAC60-05S/OF
BrandRecom
kr 218,00
Each
Units
5 V dc - 10A 50W 1 90 → 265 V ac, 127 → 370 V dc Chassis Mount Open Frame 101.6mm 50.8mm 30mm 145g 80% +70°C
RS Stock No. 162-2674
Mfr. Part No.RAC04-12SC/230
BrandRecom
kr 1 361,27
1 Tube of 12
Tube(s)
12 V dc - 333mA 4W 1 80 → 264V ac PCB Mount Encapsulated 36.7mm 27.2mm 17.1mm - 77% +65°C
RS Stock No. 739-8329
Mfr. Part No.RAC02-05SC
BrandRecom
kr 126,19
Each
Units
5 V dc - 400mA 2W 1 90 → 277V ac PCB Mount Encapsulated 33.7mm 22.2mm 17.75mm 25g 70% +85°C
RS Stock No. 166-6766
Mfr. Part No.RAC02-05SC
BrandRecom
kr 2 848,84
1 Tube of 22
Tube(s)
5 V dc - 400mA 2W 1 90 → 277V ac PCB Mount Encapsulated 33.7mm 22.2mm 17.75mm 25g 70% +85°C
RS Stock No. 739-8310
Mfr. Part No.RAC01-05SC
BrandRecom
kr 120,10
Each
Units
5 V dc - 200mA 1W 1 90 → 277V ac PCB Mount Encapsulated 33.7mm 22.2mm 17.75mm 25g 68% +85°C
RS Stock No. 166-6723
Mfr. Part No.RAC03-24SC
BrandRecom
kr 1 781,95
1 Tube of 12
Tube(s)
24 V dc - 125mA 3W 1 90 → 264V ac PCB Mount Encapsulated 37.8mm 23.9mm 15.65mm 30g 78% +85°C
RS Stock No. 193-323
Mfr. Part No.RAC05-12SB
BrandRecom
kr 407,46
Each
Units
12 V dc - 420mA 5W 1 90 → 264V ac PCB Mount Encapsulated 50.8mm 25.4mm 15.16mm 30g 75% +70°C
RS Stock No. 817-9808
Mfr. Part No.RAC04-12SC/230
BrandRecom
kr 118,56
Each
Units
12 V dc - 333mA 4W 1 80 → 264V ac Through Hole Encapsulated 36.7mm 27.2mm 17.1mm - 77% +65°C
RS Stock No. 901-1425
Mfr. Part No.RAC02-05SE/277/W
BrandRecom
kr 150,00
Each
Units
5 V dc - 400mA 2W 1 85 → 305 V ac, 120 → 430 V dc Chassis Mount Encapsulated 33.7mm 22.2mm 17.75mm 25g 70% +85°C
RS Stock No. 166-6762
Mfr. Part No.RAC01-05SC
BrandRecom
kr 2 709,55
1 Tube of 22
Tube(s)
5 V dc - 200mA 1W 1 90 → 277V ac PCB Mount Encapsulated 33.7mm 22.2mm 17.75mm 25g 68% +85°C
RS Stock No. 843-1998
Mfr. Part No.RAC04-3.3SC/W
BrandRecom
kr 152,30
Each
Units
3.3 V dc - 1.2A 4W 1 80 → 264 (With Derating) V ac, 115 → 370 (With Derating) V dc Through Hole Encapsulated 37.8mm 23.9mm 15.65mm 32g 67% +60°C
RS Stock No. 739-8341
Mfr. Part No.RAC03-24SC
BrandRecom
kr 144,77
Each
Units
24 V dc - 125mA 3W 1 90 → 264V ac PCB Mount Encapsulated 37.8mm 23.9mm 15.65mm 30g 78% +85°C
RS Stock No. 844-4013
Mfr. Part No.RAC60-12S/OF
BrandRecom
kr 239,00
Each
Units
12 V dc - 5A 60W 1 90 → 265 V ac, 127 → 370 V dc Chassis Mount Open Frame 101.6mm 50.8mm 30mm 145g 83% +70°C
RS Stock No. 180-9234
Mfr. Part No.RAC02-24SGA
BrandRecom
kr 1 247,46
1 Tube of 20
Tube(s)
24 V dc RAC02-GA 83mA 2W 1 85 → 264V ac PCB Mount Encapsulated 33.7mm 22.2mm 19mm 12g 63% +80°C
RS Stock No. 136-9203
Mfr. Part No.RACM100-12S/OF
BrandRecom
kr 1 408,43
Each
Units
12 V dc - 8.34A 100W 1 264 V ac, 370 V dc Surface Mount Open Frame 76.2mm 50.8mm 32mm 150g - +65°C
RS Stock No. 706-3525
Mfr. Part No.RAC04-05SA
BrandRecom
kr 224,17
Each
Units
5 V dc - 800mA 4W 1 90 → 264 V ac, 90 → 305 V ac PCB Mount Encapsulated 36.7mm 27mm 17.1mm 26g 72% +70°C
RS Stock No. 180-9235
Mfr. Part No.RAC02-3.3SGB
BrandRecom
kr 1 247,46
1 Tube of 20
Tube(s)
3.3 V dc RAC02-GB 500mA 2W 1 85 → 264V ac PCB Mount Encapsulated 33.7mm 22.2mm 19mm 12g 63% +80°C
RS Stock No. 136-9204
Mfr. Part No.RACM100-24S/OF
BrandRecom
kr 1 408,43
Each
Units
24 V dc - 4.17A 100W 1 264 V ac, 370 V dc Surface Mount Open Frame 76.2mm 50.8mm 32mm 150g - +65°C
RS Stock No. 180-9244
Mfr. Part No.RAC05-05SK/277/W
BrandRecom
kr 2 478,84
1 Tray of 24
Tray(s)
5 V dc RAC05-K/277 1A 5W 1 85 → 305V ac PCB Mount Encapsulated 31.7mm 26.7mm 21.8mm 37g 80% +75°C
RS Stock No. 901-1438
Mfr. Part No.RAC03-3.3SE/277
BrandRecom
kr 157,97
Each
Units
3.3 V dc - 900mA 3W 1 85 → 305 V ac, 120 → 430 V dc PCB Mount Encapsulated 38.25mm 24.35mm 17.4mm 28g 71% +85°C