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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Description Price 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 Stock No. 170-9240
Mfr. Part No.78601/2C
€1.11
Each (On a Reel of 50)
units
- - - 1 Through Hole Filtering 500µH - Pin 9.52mm 9mm 6.35mm 9.52 x 9 x 6.35mm 1kV
RS Stock No. 715-6951
Mfr. Part No.78601/2C
€1.46
Each
units
- - - 1 Through Hole Filtering 500µH - Pin 9.52mm 9mm 6.35mm 9.52 x 9 x 6.35mm 1kV
RS Stock No. 106-8582
Mfr. Part No.78602/2C
€1.328
Each (In a Tube of 50)
units
- - - 2 Through Hole Filtering 500µH - Pin 9.52mm - - 9.52 x 9 x 6.35mm 1kV
RS Stock No. 106-8583
Mfr. Part No.78602/8C
€1.234
Each (In a Tube of 50)
units
- - - 2 Through Hole Filtering 1mH - Pin 9.52mm - - 9.52 x 9 x 6.35mm 1kV
RS Stock No. 106-8820
Mfr. Part No.77205C
€5.537
Each (In a Tube of 25)
units
- - - - Through Hole TRIAC Firing - - Pin 25.4mm - - 25.4 x 20.3 x 12.3mm -
RS Stock No. 170-9242
Mfr. Part No.78602/4C
€1.234
Each (On a Reel of 50)
units
- - - 2 Through Hole Filtering 100µH - Pin 9.52mm 9mm 6.35mm 9.52 x 9 x 6.35mm 1kV
RS Stock No. 715-6999
Mfr. Part No.78615/3C
€1.36
Each
units
- - - 2 Through Hole Filtering 200µH - Pin 9.52mm 9mm 6.35mm 9.52 x 9 x 6.35mm 1kV
RS Stock No. 170-9243
Mfr. Part No.78615/3C
€1.234
Each (On a Reel of 50)
units
- - - 2 Through Hole Filtering 200µH - Pin 9.52mm 9mm 6.35mm 9.52 x 9 x 6.35mm 1kV
RS Stock No. 106-8584
Mfr. Part No.78602/16C
€1.234
Each (In a Tube of 50)
units
- - - 2 Through Hole Filtering 4mH - Pin 9.52mm - - 9.52 x 9 x 6.35mm 1kV
RS Stock No. 106-8823
Mfr. Part No.77202C
€5.537
Each (In a Tube of 25)
units
- - - - Through Hole TRIAC Firing - - Pin 25.4mm - - 25.4 x 20.3 x 12.3mm -
RS Stock No. 106-8785
Mfr. Part No.78615/8C
€1.224
Each (In a Tube of 50)
units
- - - 2 Through Hole Filtering 1mH - Pin 9.52mm - - 9.52 x 9 x 6.35mm 1kV
RS Stock No. 715-6989
Mfr. Part No.78602/8C
€1.36
Each
units
- - - 2 Through Hole Filtering 1mH - Pin 9.52mm 9mm 6.35mm 9.52 x 9 x 6.35mm 1kV
RS Stock No. 715-6970
Mfr. Part No.78602/9C
€1.36
Each
units
- - - 2 Through Hole Filtering 10mH - Pin 9.52mm 9mm 6.35mm 9.52 x 9 x 6.35mm 1kV
RS Stock No. 715-6949
Mfr. Part No.78601/4C
€1.45
Each
units
- - - 1 Through Hole Filtering 100µH - Pin 9.52mm 9mm 6.35mm 9.52 x 9 x 6.35mm 1kV
RS Stock No. 715-7002
Mfr. Part No.78615/2C
€1.36
Each
units
- - - 2 Through Hole Filtering 500µH - Pin 9.52mm 9mm 6.35mm 9.52 x 9 x 6.35mm 1kV
RS Stock No. 170-9245
Mfr. Part No.78615/16C
€0.91
Each (On a Reel of 50)
units
- - - 2 Through Hole Filtering 4mH - Pin 9.52mm 9mm 6.35mm 9.52 x 9 x 6.35mm 1kV
RS Stock No. 106-8874
Mfr. Part No.78602/9C
€1.234
Each (In a Tube of 50)
units
- - - 2 Through Hole Filtering 10mH - Pin 9.52mm - - 9.52 x 9 x 6.35mm 1kV
RS Stock No. 715-6986
Mfr. Part No.78602/2C
€1.46
Each
units
- - - 2 Through Hole Filtering 500µH - Pin 9.52mm 9mm 6.35mm 9.52 x 9 x 6.35mm 1kV
RS Stock No. 170-9244
Mfr. Part No.78615/2C
€1.234
Each (On a Reel of 50)
units
- - - 2 Through Hole Filtering 500µH - Pin 9.52mm 9mm 6.35mm 9.52 x 9 x 6.35mm 1kV
RS Stock No. 715-6955
Mfr. Part No.78601/8C
€1.36
Each
units
- - - 1 Through Hole Filtering 1mH - Pin 9.52mm 9mm 6.35mm 9.52 x 9 x 6.35mm 1kV