Switch Mode Power Supply (SMPS) Transformers

Switch mode power supply (SMPS) transformers are a highly efficient form of transformer, used in devices like personal computers.

A switch mode power supply is an electronic power supply that incorporates a switching regulator to efficiently convert electrical power. Like other power supplies, an SMPS transfers power from a DC or AC source (which is often mains power) to DC loads, such as a personal computer, while converting voltage and current characteristics.

How do switch mode power supply (SMPS) transformers work?

Any switched-mode power supply that gets its power from an AC power line (also known as an 'off-line' converter) requires a transformer for galvanic isolation, which prevents current flow. Some DC-to-DC converters may also include a transformer.

SMPS transformers run at high frequency. Most of the cost savings (as well as space savings) in off-line power supplies result from the smaller size of the high-frequency transformer.

Types of switch mode power supply (SMPS) transformers

SMPS transformers have many different applications. They can be used as broadband transformers, DC-to-DC converters, low-power DC-to-DC converters, pulse transformers and power sourcing equipment, among other uses.


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Omschrijving Prijs Secondary Voltage Rating Primary Voltage Rating Power Rating Number of Outputs Mounting Type Application Inductance Secondary Current Termination Type Length Width Depth Dimensions Isolation Voltage
RS-stocknr. 774-8213
FabrikantRS PRO
28,77 €
Each
Aantal stuks
- - 12W 1 Encapsulated - - - - 50mm 48mm 40mm - -
RS-stocknr. 522-5989
Fabrikantnummer749196111
FabrikantWurth Elektronik
3,36 €
Each
Aantal stuks
- - - 3 Surface Mount Flyback, Forward, Push-Pull, SEPIC, Step Down, Step Up 27.4µH 550mA - 12.9mm 9.2mm 6.2mm 12.9 x 9.2 x 6.2mm 500V dc
RS-stocknr. 792-4401
Fabrikantnummer47164
FabrikantMyrra
16,16 €
Each
Aantal stuks
12V dc 85 → 265 V ac, 85 → 370 V dc 5W 1 Through Hole - - - - 31.7mm 26.7mm 21.8mm 31.7 x 26.7 x 21.8mm -
RS-stocknr. 418-5543
Fabrikantnummer74030
FabrikantMyrra
7,29 €
Each
Aantal stuks
3.3 → 7 V ac, 8 → 17 V ac 85 → 265V ac 15 → 30W 3 Through Hole Flyback - 1.5 A, 3 A Pin 26.5mm 22.5mm 26.5mm 26.5 x 22.5 x 26.5 mmmm -
RS-stocknr. 162-0231
FabrikantnummerB82802A0012A215
FabrikantEPCOS
1,918 €
Each (On a Reel of 300)
Aantal stuks
12 (Output 1) V, 5 (Output 2) V 36 → 60V dc 12W 2 Surface Mount DC to DC Converter, Flyback, Power Over Ethernet, Power Sourcing Equipment, Powered Devices 100µH - Gullwing 22.3mm - - 22.3 x 16.5 x 8.65mm 1.5kV ac
RS-stocknr. 871-1657
FabrikantnummerB82802A0012A215
FabrikantEPCOS
3,39 €
Each
Aantal stuks
12 (Output 1) V, 5 (Output 2) V 36 → 60V dc 12W 2 Surface Mount DC to DC Converter, Flyback, Power Over Ethernet, Power Sourcing Equipment, Powered Devices 100µH - Gullwing 22.3mm - - 22.3 x 16.5 x 8.65mm 1500V ac
RS-stocknr. 823-5459
Fabrikantnummer760895751
FabrikantWurth Elektronik
19,40 €
Each
Aantal stuks
48V - 250W 1 Through Hole - - 4.3A - 48mm 46mm 27.5mm 48 x 46 x 27.5mm 250V
RS-stocknr. 163-5623
Fabrikantnummer760895751
FabrikantWurth Elektronik
17,337 €
Each (In a Tray of 15)
Aantal stuks
48V - 250W 1 Through Hole - 400µH 4.3A - 48mm 46mm 27.5mm 48 x 46 x 27.5mm 250V
RS-stocknr. 841-6762
FabrikantnummerB78304B1030A003
FabrikantEPCOS
6,18 €
Each
Aantal stuks
- - - 1 Surface Mount Pulse Transformers, Broadband Transformers, Drive Transformers for Power Semiconductors, Low-power DC/DC Converters 100nH - Gullwing 8mm 7mm 5.4mm 8 x 7 x 5.4mm -
RS-stocknr. 167-0209
FabrikantnummerB78304B1030A003
FabrikantEPCOS
3,05 €
Each (On a Reel of 900)
Aantal stuks
- - - 1 Surface Mount Broadband Transformers, Drive Transformers for Power Semiconductors, Low-power DC/DC Converters, Pulse Transformers 100nH - Gullwing 8mm 7mm 5.4mm 8 x 7 x 5.4mm -
RS-stocknr. 823-5440
Fabrikantnummer760895641
FabrikantWurth Elektronik
16,59 €
Each
Aantal stuks
24 V - 200W 1 Through Hole - - 3.5A - 44mm 43mm 30mm 44 x 43 x 30mm 250V
RS-stocknr. 522-5995
Fabrikantnummer749196121
FabrikantWurth Elektronik
3,36 €
Each
Aantal stuks
- - - - - Flyback, Forward, Push-Pull, SEPIC, Step Down, Step Up 14.7µH 550mA - 12.9mm 9.2mm 6.2mm 12.9 x 9.2 x 6.2mm 500V dc
RS-stocknr. 792-4379
Fabrikantnummer47153
FabrikantMyrra
19,05 €
Each
Aantal stuks
9V dc 85 → 265 V ac, 85 → 370 V dc 5W 1 Through Hole - - - - 31.7mm 26.7mm 21.8mm 31.7 x 26.7 x 21.8mm -
RS-stocknr. 792-4405
Fabrikantnummer47166
FabrikantMyrra
16,16 €
Each
Aantal stuks
24V dc 85 → 265 V ac, 85 → 370 V dc 5W 1 Through Hole - - - - 31.7mm 26.7mm 21.8mm 31.7 x 26.7 x 21.8mm -
RS-stocknr. 522-6005
Fabrikantnummer749196131
FabrikantWurth Elektronik
4,55 €
Each
Aantal stuks
- - - - - Flyback, Forward, Push-Pull, SEPIC, Step Down, Step Up 10.9µH 550mA - 12.9mm 9.2mm 6.2mm 12.9 x 9.2 x 6.2mm 500V dc
RS-stocknr. 418-5470
Fabrikantnummer74000
FabrikantMyrra
3,12 €
Each
Aantal stuks
3.3 → 7 V dc, 8 → 17 V dc 85 → 265V ac 4W 2 Through Hole Flyback - 1.2 A, 350 mA Pin 18mm 17.5mm 16mm 18 x 17.5 x 16mm -
RS-stocknr. 163-5620
Fabrikantnummer760895641
FabrikantWurth Elektronik
15,08 €
Each (In a Tray of 15)
Aantal stuks
24V - 200W 1 Through Hole - 500µH 3.5A - 44mm 43mm 30mm 44 x 43 x 30mm 250V
RS-stocknr. 792-4385
Fabrikantnummer47156
FabrikantMyrra
18,87 €
Each
Aantal stuks
24V dc 85 → 265 V ac, 85 → 370 V dc 5W 1 Through Hole - - - - 31.7mm 26.7mm 21.8mm 31.7 x 26.7 x 21.8mm -
RS-stocknr. 163-5621
Fabrikantnummer760895731
FabrikantWurth Elektronik
17,848 €
Each (In a Tray of 15)
Aantal stuks
12V - 250W 1 Through Hole - 475µH 5A - 48mm 46mm 27.5mm 48 x 46 x 27.5mm 250V
RS-stocknr. 792-4348
Fabrikantnummer47122
FabrikantMyrra
18,55 €
Each
Aantal stuks
5V dc 85 → 265 V ac, 85 → 370 V dc 2.5W 1 Through Hole - - - - 31.7mm 26.7mm 21.8mm 31.7 x 26.7 x 21.8mm -
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