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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RS 제품 번호 522-6055
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제조사 부품 번호749196241
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- - - - - Flyback, Forward, Push-Pull, SEPIC, Step Down, Step Up 6.6µH 950mA - 16.3mm 12mm 7.4mm 16.3 x 12 x 7.4mm 500V dc
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제조사 부품 번호74094
제조사Myrra
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제조사 부품 번호47123
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9V dc 85 → 265 V ac, 85 → 370 V dc 2.5W 1 Through Hole - - - - 31.7mm 26.7mm 21.8mm 31.7 x 26.7 x 21.8mm -
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제조사 부품 번호B82802A0030A320
제조사EPCOS
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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 제품 번호 151-1273
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- 80V dc - 1 Surface Mount Signal & Power 460µH - Solder 7mm 7mm 6mm 7 x 7 x 6mm 1500 (Test)V
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제조사 부품 번호B82802A0012A315
제조사EPCOS
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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 제품 번호 170-9243
제조사 부품 번호78615/3C
₩1,991.75
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- - - 2 Through Hole Filtering 200µH - Pin 9.52mm 9mm 6.35mm 9.52 x 9 x 6.35mm 1kV
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제조사 부품 번호78602/8C
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제조사 부품 번호47152
제조사Myrra
₩13,131.60
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5V 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 제품 번호 162-0295
제조사 부품 번호B82802A0055A325
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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 제품 번호 106-8874
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RS 제품 번호 792-4388
제조사 부품 번호47114
제조사Myrra
₩13,481.90
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12V dc 85 → 265 V ac, 85 → 370 V dc 2.4W 1 Through Hole - - - - 31.7mm 26.7mm 21.8mm 31.7 x 26.7 x 21.8mm -
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제조사 부품 번호77202C
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RS 제품 번호 816-4947
제조사 부품 번호760301303
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80V ac 250V - 1 Surface Mount Flyback 750µH - Solder 10.5mm 10.5mm 11mm 10.5 x 10.5 x 11mm 1500 V dc, 2500 V ac
RS 제품 번호 522-5989
제조사 부품 번호749196111
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RS 제품 번호 418-5470
제조사 부품 번호74000
제조사Myrra
₩4,822.05
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제조사 부품 번호760895651
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RS 제품 번호 522-6134
제조사 부품 번호749196500
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₩12,720.85
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- - - 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