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 162-0231
製造零件編號B82802A0012A215
BrandEPCOS
HK$16.183
個 (在毎卷:300)
單位
5 (Output 2) V, 12 (Output 1) V 36 → 60V dc 12W 2 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庫存編號 871-1666
製造零件編號B82802A0055A225
BrandEPCOS
HK$60.10
單位
5 (Output 2) V, 12 (Output 1) V 30 → 60V ac 55W 2 Surface Mount DC to DC Converter, Flyback, Power Over Ethernet, Power Sourcing Equipment, Powered Devices 22µH - Gullwing 32.6mm - - 32.6 x 27 x 14.8mm 1500V ac
RS庫存編號 871-1657
製造零件編號B82802A0012A215
BrandEPCOS
HK$27.95
單位
5 (Output 2) V, 12 (Output 1) V 36 → 60V dc 12W 2 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 1500V ac
RS庫存編號 162-0296
製造零件編號B82802A0055A225
BrandEPCOS
HK$32.367
個 (在毎卷:80)
單位
5 (Output 2) V, 12 (Output 1) V 30 → 60V ac 55W 2 Surface Mount DC to DC Converter, Flyback, Power Over Ethernet, Power Sourcing Equipment, Powered Devices 22µH - Gullwing 32.6mm - - 32.6 x 27 x 14.8mm 1.5kV ac
RS庫存編號 162-0279
製造零件編號B82802A0030A220
BrandEPCOS
HK$21.577
個 (在毎卷:160)
單位
5 (Output 2) V, 12 (Output 1) V 36 → 60V dc 30W 2 Surface Mount DC to DC Converter, Flyback, Power Over Ethernet, Power Sourcing Equipment, Powered Devices 40µH - Gullwing 25.7mm - - 25.7 x 22 x 10.7mm 1.5kV ac
RS庫存編號 871-1654
製造零件編號B82802A0030A220
BrandEPCOS
HK$47.57
單位
5 (Output 2) V, 12 (Output 1) V 36 → 60V dc 30W 2 Surface Mount DC to DC Converter, Flyback, Power Over Ethernet, Power Sourcing Equipment, Powered Devices 40µH - Gullwing 25.7mm - - 25.7 x 22 x 10.7mm 1500V ac
RS庫存編號 162-0280
製造零件編號B82802A0030A320
BrandEPCOS
HK$21.577
個 (在毎卷:160)
單位
3.3 (Output 2) V, 5 (Output 1) V, 12 (Output 3) V 36 → 60V dc 30W 3 Surface Mount DC to DC Converter, Flyback, Power Over Ethernet, Power Sourcing Equipment, Powered Devices 40µH - Gullwing 25.7mm - - 25.7 x 22 x 10.7mm 1.5kV ac
RS庫存編號 871-1650
製造零件編號B82802A0012A315
BrandEPCOS
HK$28.80
單位
3.3 (Output 2) V, 5 (Output 1) V, 12 (Output 3) 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 1500V ac
RS庫存編號 841-6762
製造零件編號B78304B1030A003
BrandEPCOS
HK$42.98
單位
- - - 1 Surface Mount Broadband Transformers, Drive Transformers for Power Semiconductors, Low-power DC/DC Converters, Pulse Transformers 100nH - Gullwing 8mm 7mm 5.4mm 8 x 7 x 5.4mm -
RS庫存編號 841-6765
製造零件編號B78304B1031A003
BrandEPCOS
HK$49.28
單位
- - - 1 Surface Mount Broadband Transformers, Drive Transformers for Power Semiconductors, Low-power DC/DC Converters, Pulse Transformers 1µH - Gullwing 8mm 7mm 5.4mm 8 x 7 x 5.4mm -
RS庫存編號 162-0281
製造零件編號B78304B1031A003
BrandEPCOS
HK$29.669
個 (在毎卷:900)
單位
- - - 1 Surface Mount Broadband Transformers, Drive Transformers for Power Semiconductors, Low-power DC/DC Converters, Pulse Transformers 1µH - Gullwing 8mm 7mm 5.4mm 8 x 7 x 5.4mm -
RS庫存編號 167-0209
製造零件編號B78304B1030A003
BrandEPCOS
HK$50.717
個 (在毎卷:900)
單位
- - - 1 Surface Mount Broadband Transformers, Drive Transformers for Power Semiconductors, Low-power DC/DC Converters, Pulse Transformers 100nH - Gullwing 8mm 7mm 5.4mm 8 x 7 x 5.4mm -
RS庫存編號 171-1196
製造零件編號B82802A0012A315
BrandEPCOS
HK$27.664
個 (在毎卷:300)
單位
3.3 (Output 2) V, 5 (Output 1) V, 12 (Output 3) 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庫存編號 871-1663
製造零件編號B82802A0030A320
BrandEPCOS
HK$38.50
單位
3.3 (Output 2) V, 5 (Output 1) V, 12 (Output 3) V 36 → 60V dc 30W 3 Surface Mount DC to DC Converter, Flyback, Power Over Ethernet, Power Sourcing Equipment, Powered Devices 40µH - Gullwing 25.7mm - - 25.7 x 22 x 10.7mm 1500V ac
RS庫存編號 162-0295
製造零件編號B82802A0055A325
BrandEPCOS
HK$32.367
個 (在毎卷:80)
單位
3.3 (Output 2) V, 5 (Output 1) V, 12 (Output 3) V 36 → 60V dc 55W 3 Surface Mount DC to DC Converter, Flyback, Power Over Ethernet, Power Sourcing Equipment, Powered Devices 22µH - Gullwing 32.6mm - - 32.6 x 27 x 14.8mm 1.5kV ac
RS庫存編號 871-1660
製造零件編號B82802A0055A325
BrandEPCOS
HK$57.70
單位
3.3 (Output 2) V, 5 (Output 1) V, 12 (Output 3) V 36 → 60V dc 55W 3 Surface Mount DC to DC Converter, Flyback, Power Over Ethernet, Power Sourcing Equipment, Powered Devices 22µH - Gullwing 32.6mm - - 32.6 x 27 x 14.8mm 1500V ac