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. 715-6939
Mfr. Part No.77204C
TWD231.00
Each
units
- - - - Through Hole TRIAC Firing - - Pin 25.4mm 20.3mm 12.3mm 25.4 x 20.3 x 12.3mm -
RS Stock No. 106-8824
Mfr. Part No.77204C
TWD216.70
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. 715-6942
Mfr. Part No.77208C
TWD231.00
Each
units
- - - - Through Hole TRIAC Firing - - Pin 25.4mm 20.3mm 12.3mm 25.4 x 20.3 x 12.3mm -
RS Stock No. 106-8825
Mfr. Part No.77208C
TWD223.90
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. 106-8814
Mfr. Part No.78615/9C
TWD48.30
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. 715-7005
Mfr. Part No.78615/8C
TWD52.00
Each
units
- - - 2 Through Hole Filtering 1mH - Pin 9.52mm 9mm 6.35mm 9.52 x 9 x 6.35mm 1kV
RS Stock No. 106-8785
Mfr. Part No.78615/8C
TWD49.90
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. 715-7011
Mfr. Part No.78615/9C
TWD52.00
Each
units
- - - 2 Through Hole Filtering 10mH - Pin 9.52mm 9mm 6.35mm 9.52 x 9 x 6.35mm 1kV
RS Stock No. 106-8820
Mfr. Part No.77205C
TWD223.90
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. 715-6973
Mfr. Part No.78602/4C
TWD58.00
Each
units
- - - 2 Through Hole Filtering 100µH - Pin 9.52mm 9mm 6.35mm 9.52 x 9 x 6.35mm 1kV
RS Stock No. 715-6964
Mfr. Part No.78601/1C
TWD52.00
Each
units
- - - 1 Through Hole Filtering 2mH - Pin 9.52mm 9mm 6.35mm 9.52 x 9 x 6.35mm 1kV
RS Stock No. 715-6945
Mfr. Part No.77209C
TWD231.00
Each
units
- - - 2 Through Hole TRIAC Firing - - Pin 25.4mm 20.3mm 12.3mm 25.4 x 20.3 x 12.3mm -
RS Stock No. 106-8584
Mfr. Part No.78602/16C
TWD48.30
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. 715-6936
Mfr. Part No.77202C
TWD231.00
Each
units
- - - - Through Hole TRIAC Firing - - Pin 25.4mm 20.3mm 12.3mm 25.4 x 20.3 x 12.3mm -
RS Stock No. 715-6983
Mfr. Part No.78602/1C
TWD52.00
Each
units
- - - 2 Through Hole Filtering 2mH - Pin 9.52mm 9mm 6.35mm 9.52 x 9 x 6.35mm 1kV
RS Stock No. 715-7009
Mfr. Part No.78615/1C
TWD52.00
Each
units
- - - 2 Through Hole Filtering 2mH - Pin 9.52mm 9mm 6.35mm 9.52 x 9 x 6.35mm 1kV
RS Stock No. 106-8829
Mfr. Part No.78601/4C
TWD49.90
Each (In a Tube of 50)
units
- - - 1 Through Hole Filtering 100µH - Pin 9.52mm - - 9.52 x 9 x 6.35mm 1kV
RS Stock No. 715-6933
Mfr. Part No.77205C
TWD231.00
Each
units
- - - - Through Hole TRIAC Firing - - Pin 25.4mm 20.3mm 12.3mm 25.4 x 20.3 x 12.3mm -
RS Stock No. 715-6967
Mfr. Part No.78601/16C
TWD55.00
Each
units
- - - 1 Through Hole Filtering 4mH - Pin 9.52mm 9mm 6.35mm 9.52 x 9 x 6.35mm 1kV
RS Stock No. 170-9242
Mfr. Part No.78602/4C
TWD48.30
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