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. 418-5486
Fabrikantnummer74001
FabrikantMyrra
€ 3,43
Each
Aantal stuks
3.3 → 6V ac 85 → 265V ac 4.5 → 6W 1 Through Hole Flyback - 1.2A Pin 18mm 17.5mm 16mm 18 x 17.5 x 16mm -
RS-stocknr. 162-1312
Fabrikantnummer760895631
FabrikantWurth Elektronik
€ 14,364
Each (In a Tray of 20)
Aantal stuks
12V - 200W 1 Through Hole - 500µH 3.5A - 44mm 43mm 30mm 44 x 43 x 30mm 250V
RS-stocknr. 106-8785
Fabrikantnummer78615/8C
€ 1,268
Each (In a Tube of 50)
Aantal stuks
- - - 2 Through Hole Filtering 1mH - Pin 9.52mm - - 9.52 x 9 x 6.35mm 1kV
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. 715-6939
Fabrikantnummer77204C
€ 5,87
Each
Aantal stuks
- - - - Through Hole TRIAC Firing - - Pin 25.4mm 20.3mm 12.3mm 25.4 x 20.3 x 12.3mm -
RS-stocknr. 522-6207
Fabrikantnummer749196511
FabrikantWurth Elektronik
€ 7,75
Each
Aantal stuks
- - - - - Flyback, Forward, Push-Pull, SEPIC, Step Down, Step Up 22.3µH 1.7A - 21mm 21mm 10.8mm 21 x 21 x 10.8mm 500V dc
RS-stocknr. 181-0913
FabrikantnummerTRH750-21S
FabrikantToyogiken
€ 226,05
Each
Aantal stuks
- - - - - - - - Screw - - - - -
RS-stocknr. 715-6961
Fabrikantnummer78601/9C
€ 1,32
Each
Aantal stuks
- - - 2 Through Hole Filtering 10mH - Pin 9.52mm 9mm 6.35mm 9.52 x 9 x 6.35mm 1kV
RS-stocknr. 418-5492
Fabrikantnummer74002
FabrikantMyrra
€ 3,61
Each
Aantal stuks
9 → 18V ac 85 → 265V ac 4.5 → 6W 1 Through Hole Flyback - 500mA Pin 18mm 17.5mm 16mm 18 x 17.5 x 16mm -
RS-stocknr. 522-6140
Fabrikantnummer749196510
FabrikantWurth Elektronik
€ 8,83
Each
Aantal stuks
- - - - - Flyback, Forward, Push-Pull, SEPIC, Step Down, Step Up 9.9µH 1.91A - 21mm 21mm 10.8mm 21 x 21 x 10.8mm 500V dc
RS-stocknr. 163-5619
Fabrikantnummer760895431
FabrikantWurth Elektronik
€ 14,048
Each (In a Tray of 20)
Aantal stuks
12V - 150W 1 Through Hole - 600µH 2A - 36mm 36mm 26mm 36 x 36 x 26mm 250V
RS-stocknr. 715-6992
Fabrikantnummer78602/16C
€ 1,32
Each
Aantal stuks
- - - 2 Through Hole Filtering 4mH - Pin 9.52mm 9mm 6.35mm 9.52 x 9 x 6.35mm 1kV
RS-stocknr. 170-9243
Fabrikantnummer78615/3C
€ 1,273
Each (On a Reel of 50)
Aantal stuks
- - - 2 Through Hole Filtering 200µH - Pin 9.52mm 9mm 6.35mm 9.52 x 9 x 6.35mm 1kV
RS-stocknr. 106-8874
Fabrikantnummer78602/9C
€ 1,245
Each (In a Tube of 50)
Aantal stuks
- - - 2 Through Hole Filtering 10mH - Pin 9.52mm - - 9.52 x 9 x 6.35mm 1kV
RS-stocknr. 162-1314
Fabrikantnummer760895651
FabrikantWurth Elektronik
€ 14,364
Each (In a Tray of 15)
Aantal stuks
48V - 200W 1 Through Hole - 500µH 3.5A - 44mm 43mm 30mm 44 x 43 x 30mm 250V
RS-stocknr. 106-8855
Fabrikantnummer78601/1C
€ 1,245
Each (In a Tube of 50)
Aantal stuks
- - - 1 Through Hole Filtering 2mH - Pin 9.52mm - - 9.52 x 9 x 6.35mm 1kV
RS-stocknr. 106-8823
Fabrikantnummer77202C
€ 5,68
Each (In a Tube of 25)
Aantal stuks
- - - - Through Hole TRIAC Firing - - Pin 25.4mm - - 25.4 x 20.3 x 12.3mm -
RS-stocknr. 715-6945
Fabrikantnummer77209C
€ 6,14
Each
Aantal stuks
- - - 2 Through Hole TRIAC Firing - - Pin 25.4mm 20.3mm 12.3mm 25.4 x 20.3 x 12.3mm -
RS-stocknr. 715-7005
Fabrikantnummer78615/8C
€ 1,32
Each
Aantal stuks
- - - 2 Through Hole Filtering 1mH - Pin 9.52mm 9mm 6.35mm 9.52 x 9 x 6.35mm 1kV
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 -