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. 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. 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. 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. 792-4439
Fabrikantnummer47255
FabrikantMyrra
20,26 €
Each
Aantal stuks
15V 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. 823-5437
Fabrikantnummer760895451
FabrikantWurth Elektronik
15,45 €
Each
Aantal stuks
48V - 150W 1 Through Hole - - 2A - 36mm 36mm 26mm 36 x 36 x 26mm 250V
RS-stocknr. 181-0910
FabrikantnummerTRH200-21S
FabrikantToyogiken
94,87 €
Each
Aantal stuks
- - - - - - - - Screw - - - - -
RS-stocknr. 823-5431
Fabrikantnummer760895631
FabrikantWurth Elektronik
15,80 €
Each
Aantal stuks
12V - 200W 1 Through Hole - - 3.5A - 44mm 43mm 30mm 44 x 43 x 30mm 250V
RS-stocknr. 181-0908
FabrikantnummerTRH2K-21S
FabrikantToyogiken
480,58 €
Each
Aantal stuks
- - - - - - - - Screw - - - - -
RS-stocknr. 715-6936
Fabrikantnummer77202C
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. 181-0907
FabrikantnummerTRH150-21S
FabrikantToyogiken
87,92 €
Each
Aantal stuks
- - - - - - - - Screw - - - - -
RS-stocknr. 151-1280
Fabrikantnummer760301106
FabrikantWurth Elektronik
6,94 €
Each
Aantal stuks
- 80V dc - 1 Surface Mount Signal & Power 370µH - Solder 7mm 7mm 6mm 7 x 7 x 6mm 1500 (Test)V
RS-stocknr. 522-6027
Fabrikantnummer749196141
FabrikantWurth Elektronik
4,37 €
Each
Aantal stuks
- - - - - Flyback, Forward, Push-Pull, SEPIC, Step Down, Step Up 8.5µH 550mA - 12.9mm 9.2mm 6.2mm 12.9 x 9.2 x 6.2mm 500V dc
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. 106-8581
Fabrikantnummer78602/1C
1,268 €
Each (In a Tube of 50)
Aantal stuks
- - - 2 Through Hole Filtering 2mH - Pin 9.52mm - - 9.52 x 9 x 6.35mm 1kV
RS-stocknr. 418-5565
Fabrikantnummer74050
FabrikantMyrra
7,70 €
Each
Aantal stuks
3.3 → 6.5 V ac, 9 → 16.5 V ac 85 → 265V ac 60 → 80W 4 PCB Mount Flyback 500µH 1.5 A, 3 A, 5 A - 43mm 40mm 34mm 43 x 40 x 34mm -
RS-stocknr. 170-9245
Fabrikantnummer78615/16C
0,968 €
Each (On a Reel of 50)
Aantal stuks
- - - 2 Through Hole Filtering 4mH - Pin 9.52mm 9mm 6.35mm 9.52 x 9 x 6.35mm 1kV
RS-stocknr. 144-6532
Fabrikantnummer760301104
FabrikantWurth Elektronik
7,42 €
Each
Aantal stuks
- 80V dc - 1 Surface Mount Signal & Power 330µH - Solder 7mm 7mm 6mm 7 x 7 x 6mm -
RS-stocknr. 792-4391
Fabrikantnummer47133
FabrikantMyrra
9,65 €
Each
Aantal stuks
9V 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. 171-1196
FabrikantnummerB82802A0012A315
FabrikantEPCOS
1,284 €
Each (On a Reel of 300)
Aantal stuks
12 (Output 3) V, 3.3 (Output 2) V, 5 (Output 1) V 36 → 60V dc 12W 3 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. 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 -
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