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. 792-4433
Fabrikantnummer47257
FabrikantMyrra
€ 19,46
Each
Aantal stuks
5 V dc, 12 V dc 85 → 265 V ac, 85 → 370 V dc 5W 2 Through Hole - - - - 31.7mm 26.7mm 21.8mm 31.7 x 26.7 x 21.8mm -
RS-stocknr. 792-4372
Fabrikantnummer47154
FabrikantMyrra
€ 18,87
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. 418-4146
Fabrikantnummer74095
FabrikantMyrra
€ 4,90
Each
Aantal stuks
7.5 → 15V ac 85 → 265V ac 4.2W 1 PCB Mount Flyback 2.1mH 900mA - 18mm 16mm 17.5mm 18 x 16 x 17.5mm -
RS-stocknr. 792-4354
Fabrikantnummer47125
FabrikantMyrra
€ 16,01
Each
Aantal stuks
15V 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 -
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 -
RS-stocknr. 792-4394
Fabrikantnummer47134
FabrikantMyrra
€ 16,68
Each
Aantal stuks
12V dc 85 → 265 V ac, 85 → 370 V dc 3.2W 1 Through Hole - - - - 31.7mm 26.7mm 21.8mm 31.7 x 26.7 x 21.8mm -
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. 418-5515
Fabrikantnummer74010
FabrikantMyrra
€ 4,90
Each
Aantal stuks
4 → 7 V ac, 8 → 17 V ac 85 → 265V ac 7 → 10W 2 Through Hole Flyback - 2 A, 850 mA Pin 18mm 17.5mm 16mm 18 x 17.5 x 16mm -
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. 522-6134
Fabrikantnummer749196500
FabrikantWurth Elektronik
€ 8,80
Each
Aantal stuks
- - - 3 Surface Mount Flyback, Forward, Push-Pull, SEPIC, Step Down, Step Up 87.1µH 1.91A - 29.5mm 21mm 10.8mm 29.5 x 21 x 10.8mm 500V dc
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. 418-4130
Fabrikantnummer74094
FabrikantMyrra
€ 3,33
Each
Aantal stuks
3.3 → 6V ac 85 → 265V ac 3.1W 1 PCB Mount Flyback 2.1mH 1.5A - 18mm 16mm 17.5mm 18 x 16 x 17.5mm -
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. 509-0979
FabrikantnummerTCM 230V/12V 3VA
FabrikantEliwell
€ 12,56
Each
Aantal stuks
- - - - - - - - - - - - - -
RS-stocknr. 792-4350
Fabrikantnummer47124
FabrikantMyrra
€ 18,41
Each
Aantal stuks
12V 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 -
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. 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. 522-6049
Fabrikantnummer749196211
FabrikantWurth Elektronik
€ 3,99
Each
Aantal stuks
- - - 3 Surface Mount Flyback, Forward, Push-Pull, SEPIC, Step Down, Step Up 21.6µH 950mA - 16.3mm 12mm 7.4mm 16.3 x 12 x 7.4mm 500V dc
RS-stocknr. 792-4363
Fabrikantnummer47126
FabrikantMyrra
€ 18,10
Each
Aantal stuks
24V 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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