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庫存編號 418-5543
製造零件編號74030
BrandMyrra
TWD278.00
單位
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庫存編號 418-5470
製造零件編號74000
BrandMyrra
TWD137.00
單位
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庫存編號 715-6939
製造零件編號77204C
TWD236.00
單位
- - - - Through Hole TRIAC Firing - - Pin 25.4mm 20.3mm 12.3mm 25.4 x 20.3 x 12.3mm -
RS庫存編號 106-8824
製造零件編號77204C
TWD228.20
毎管:25 個
單位
- - - - Through Hole TRIAC Firing - - Pin 25.4mm - - 25.4 x 20.3 x 12.3mm -
RS庫存編號 522-6099
製造零件編號749196311
TWD249.00
單位
- - - - - Flyback, Forward, Push-Pull, SEPIC, Step Down, Step Up 23.3µH 970mA - 17.5mm 16mm 8.3mm 17.5 x 16 x 8.3mm 500V dc
RS庫存編號 163-3834
製造零件編號749196311
TWD124.50
個 (在毎卷:300)
單位
- - - - - Flyback, Forward, Push-Pull, SEPIC, Step Down, Step Up 23.3µH 970mA - 17.5mm 16mm 8.3mm 17.5 x 16 x 8.3mm 500V dc
RS庫存編號 418-5486
製造零件編號74001
BrandMyrra
TWD110.00
單位
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庫存編號 418-5515
製造零件編號74010
BrandMyrra
TWD168.00
單位
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庫存編號 823-5440
製造零件編號760895641
TWD600.00
單位
24 V - 200W 1 Through Hole - - 3.5A - 44mm 43mm 30mm 44 x 43 x 30mm 250V
RS庫存編號 522-5995
製造零件編號749196121
TWD175.00
單位
- - - - - Flyback, Forward, Push-Pull, SEPIC, Step Down, Step Up 14.7µH 550mA - 12.9mm 9.2mm 6.2mm 12.9 x 9.2 x 6.2mm 500V dc
RS庫存編號 163-5620
製造零件編號760895641
TWD574.50
Each (In a Tray of 15)
單位
24V - 200W 1 Through Hole - 500µH 3.5A - 44mm 43mm 30mm 44 x 43 x 30mm 250V
RS庫存編號 418-4089
製造零件編號74070
BrandMyrra
TWD545.00
單位
4 → 6.5 V ac, 10 → 16.5 V ac 85 → 265V ac 120 → 160W 4 PCB Mount Flyback 300µH 5 A, 6 A - 52mm 51mm 40.5mm 52 x 51 x 40.5mm -
RS庫存編號 418-4146
製造零件編號74095
BrandMyrra
TWD146.00
單位
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庫存編號 715-6942
製造零件編號77208C
TWD236.00
單位
- - - - Through Hole TRIAC Firing - - Pin 25.4mm 20.3mm 12.3mm 25.4 x 20.3 x 12.3mm -
RS庫存編號 106-8814
製造零件編號78615/9C
TWD50.90
毎管:50 個
單位
- - - 2 Through Hole Filtering 10mH - Pin 9.52mm - - 9.52 x 9 x 6.35mm 1kV
RS庫存編號 163-5621
製造零件編號760895731
TWD693.60
Each (In a Tray of 15)
單位
12V - 250W 1 Through Hole - 475µH 5A - 48mm 46mm 27.5mm 48 x 46 x 27.5mm 250V
RS庫存編號 106-8785
製造零件編號78615/8C
TWD50.90
毎管:50 個
單位
- - - 2 Through Hole Filtering 1mH - Pin 9.52mm - - 9.52 x 9 x 6.35mm 1kV
RS庫存編號 106-8825
製造零件編號77208C
TWD224.20
毎管:25 個
單位
- - - - Through Hole TRIAC Firing - - Pin 25.4mm - - 25.4 x 20.3 x 12.3mm -
RS庫存編號 715-7005
製造零件編號78615/8C
TWD53.00
單位
- - - 2 Through Hole Filtering 1mH - Pin 9.52mm 9mm 6.35mm 9.52 x 9 x 6.35mm 1kV
RS庫存編號 715-7011
製造零件編號78615/9C
TWD53.00
單位
- - - 2 Through Hole Filtering 10mH - Pin 9.52mm 9mm 6.35mm 9.52 x 9 x 6.35mm 1kV