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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.

188 Products showing for SMPS Transformers

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In Stock RS PRO 1 Output SMPS Transformer 12 W Output, 100 to 240 V RS stock no. 774-8213 Subtotal (1 unit) R 658,83(exc. VAT) R 658,83/unit Quantity		SMPS Transformer	-	100 to 240 V	-	1	Encapsulated	-	-	12W	2.5A	-	50mm	-20°C	-	0.35A	48mm	40mm	50°C	-	-	No	100g	-
In Stock Wurth Elektronik 1 Output SMPS Transformer 250 W Output, 360/400 V, 48 V, 400 μH RS stock no. 823-5459 Mfr. Part No. 760895751 Subtotal (1 unit) R 484,70(exc. VAT) R 484,70/unit Quantity	Wurth Elektronik	SMPS Transformer	48 V	360/400 V	-	1	Through Hole	-	400μH	250W	4.3A	-	48mm	-40°C	16	-	46mm	27.5mm	125°C	-	WE-LLCR	No	121g	250V
In Stock Myrra 2 Output SMPS Transformer 5 W Output, 265 V, 85 to 370 V ac, 5 V RS stock no. 792-4427 Mfr. Part No. 47252 Subtotal (1 unit) R 318,60(exc. VAT) R 318,60/unit Quantity	Myrra	SMPS Transformer	5 V	265 V, 85 to 370 V ac	-	2	Through Hole	-	-	5W	350mA	-	31.7mm	-25°C	6	0.2A	26.7mm	21.8mm	60°C	-	-	ENEC, CE, UL, RoHS, VDE	30g	-
Limited stock Myrra 1 Output SMPS Transformer 5 W Output, 370 V dc, 265 V ac, 12 V dc RS stock no. 792-4372 Mfr. Part No. 47154 Subtotal (1 unit) R 369,72(exc. VAT) R 369,72/unit Quantity	Myrra	SMPS Transformer	12 V dc	370 V dc, 265 V ac	-	1	Through Hole	-	-	5W	1350mA	-	31.7mm	-25°C	-	-	26.7mm	21.8mm	70°C	-	47000	EN 55022 Class B, EN 60335, EN 61558-2-17, EN 55014-2, EN 61000-4-x, UL 94-V0, EN 60950, EN 55014-1	-	4000V ac
In Stock Bourns 2 Output SMPS Transformer 9 W Output, 265 V ac, 12 V, 890 μH RS stock no. 285-0563 Mfr. Part No. 063934 Subtotal (1 unit) R 53,76(exc. VAT) R 53,76/unit Quantity	Bourns	SMPS Transformer	12 V	265 V ac	-	2	Through Hole	-	890μH	9W	-	-	-	-25°C	-	-	-	-	125°C	-	063934	EN 62368, RoHS, EN 60335 EN 61558	-	-
In Stock Myrra 2 Output SMPS Transformer 120 W Output, 265 V ac, 15.5 V dc, 440 μH RS stock no. 418-4073 Mfr. Part No. 74060 Subtotal (1 unit) R 518,48(exc. VAT) R 518,48/unit Quantity	Myrra	SMPS Transformer	15.5 V dc	265 V ac	-	2	-	-	440μH	120W	4A	-	-	-	-	-	-	-	50°C	-	ETD 39	CEI61558, CEI335, CEI950	-	3750V ac
Limited stock Myrra 4 Output SMPS Transformer 45 W Output, 265 V ac, 4.5 to 6 V dc, 500 μH RS stock no. 418-5559 Mfr. Part No. 74040 Subtotal (1 unit) R 228,45(exc. VAT) R 228,45/unit Quantity	Myrra	SMPS Transformer	4.5 to 6 V dc	265 V ac	-	4	-	-	500μH	45W	5A	-	-	-	-	-	-	-	50°C	-	ETD 29	CEI61558, CEI950, CEI335	-	3750V ac
In Stock Myrra SMPS Transformer 10 W Output, 2 to 18 V dc, 3900 μH RS stock no. 418-5486 Mfr. Part No. 74001 Subtotal (1 unit) R 128,51(exc. VAT) R 128,51/unit Quantity	Myrra	SMPS Transformer	2 to 18 V dc	-	-	-	-	-	3900μH	10W	2A	-	-	-	-	-	-	-	50°C	-	EE16	CEI61558, CEI950, CEI335	-	3750V ac
Limited stock Myrra 2 Output SMPS Transformer 10 W Output, 85/265 V ac, 7 V, 8 to 17 V ac, 1.66 mH RS stock no. 418-5515 Mfr. Part No. 74010 Subtotal (1 unit) R 173,59(exc. VAT) R 173,59/unit Quantity	Myrra	SMPS Transformer	7 V, 8 to 17 V ac	85/265 V ac	-	2	Through Hole	-	1.66mH	10W	2A	Pin	18mm	-	-	-	17.5mm	16mm	50°C	-	-	RoHS	-	-
Limited stock Myrra 3 Output SMPS Transformer 5.4 W Output, 370 V dc, 265 V ac, 24 V dc RS stock no. 792-4360 Mfr. Part No. 47152 Subtotal (1 unit) R 454,22(exc. VAT) R 454,22/unit Quantity	Myrra	SMPS Transformer	24 V dc	370 V dc, 265 V ac	-	3	-	-	-	5.4W	1350mA, 70mA	-	-	-25°C	-	-	-	-	70°C	-	47000	EN 55022 Class B, EN 55014-1, UL 94-V0, EN 61558-2-17, EN 55014-2, EN 61000-4-x, EN 60950, EN 60335	-	4000V ac
Limited stock Myrra 1 Output SMPS Transformer 5.4 W Output, 85 to 370 V dc, 85 to 265 V ac, 24 V RS stock no. 792-4394 Mfr. Part No. 47134 Subtotal (1 unit) R 380,67(exc. VAT) R 380,67/unit Quantity	Myrra	SMPS Transformer	24 V	85 to 370 V dc, 85 to 265 V ac	-	1	-	-	-	5.4W	1350mA	-	-	-25°C	4	-	-	-	70°C	-	47000	EN 55014-2, EN 61000-4-x, UL 94-V0, UL components, EN 60950, EN 61558-2-17, EN 55022 Class B, EN 60335, EN 55014-1	-	4000V ac
Limited stock Myrra 2 Output SMPS Transformer 5 W Output, 370 V dc, 265 V ac, 3.3 to 24 V dc RS stock no. 792-4385 Mfr. Part No. 47156 Subtotal (1 unit) R 443,32(exc. VAT) R 443,32/unit Quantity	Myrra	SMPS Transformer	3.3 to 24 V dc	370 V dc, 265 V ac	-	2	-	-	-	5W	1350mA	-	-	-25°C	-	-	-	-	70°C	-	47000	EN 60335, EN 55014-1, EN 61000-4-x, EN 55014-2, EN 61558-2-17, EN 60950, EN 55022 Class B, UL 94-V0	-	4000V ac
In Stock Myrra 6 Output SMPS Transformer 160 W Output, 265 V ac, 10.5 to 15 V dc, 300 μH RS stock no. 418-4089 Mfr. Part No. 74070 Subtotal (1 unit) R 620,67(exc. VAT) R 620,67/unit Quantity	Myrra	SMPS Transformer	10.5 to 15 V dc	265 V ac	-	6	-	-	300μH	160W	5A	-	-	-	-	-	-	-	50°C	-	-	CEI950, CEI335, CEI61558	-	3750V ac
In Stock Wurth Elektronik 1 Output Switch Mode Power Supply Transformer 1.2 W Output, 24 V dc, 12 V dc, 4 mH RS stock no. 245-8590 Mfr. Part No. 750317331 Subtotal (1 unit) R 56,67(exc. VAT) R 56,67/unit Quantity	Wurth Elektronik	Switch Mode Power Supply Transformer	12 V dc	24 V dc	-	1	Surface	-	4mH	1.2W	0.8A	-	10.2mm	-40°C	6	-	6.73mm	4.19mm	125°C	-	-	RoHS	-	-
Limited stock Myrra 2 Output SMPS Transformer, 265 V ac, 370 V dc RS stock no. 792-4344 Mfr. Part No. 47121 Subtotal (1 unit) R 344,21(exc. VAT) R 344,21/unit Quantity	Myrra	SMPS Transformer	-	265 V ac, 370 V dc	-	2	-	-	-	-	-	-	-	-25°C	-	-	-	-	70°C	-	47000	EN 61000-4-x, EN 60335, EN 61558-2-17, EN 55022 Class B, EN 60950, EN 55014-1, EN 55014-2, UL 94-V0	-	4000V ac
Limited stock Myrra 12 Output SMPS Transformer 5 W Output, 265 V ac, 370 V dc RS stock no. 792-4417 Mfr. Part No. 47244 Subtotal (1 unit) R 400,23(exc. VAT) R 400,23/unit Quantity	Myrra	SMPS Transformer	-	265 V ac, 370 V dc	-	12	-	-	-	5W	-	-	-	-25°C	-	-	-	-	70°C	-	47000	EN 60335, EN 61558-2-17, EN 55022 Class B, EN 55014-2, UL 94-V0, EN 60950, EN 55014-1, EN 61000-4-x	-	4000V ac
In Stock Myrra 3 Output SMPS Transformer, 265 V ac, 370 V dc RS stock no. 792-4411 Mfr. Part No. 47245 Subtotal (1 unit) R 353,31(exc. VAT) R 353,31/unit Quantity	Myrra	SMPS Transformer	-	265 V ac, 370 V dc	-	3	-	-	-	-	-	-	-	-25°C	-	-	-	-	70°C	-	47000	EN 61558-2-17, UL 94-V0, EN 55022 Class B, EN 60335, EN 55014-1, EN 61000-4-x, EN 60950, EN 55014-2, UL	-	4000V ac
Limited stock Myrra 3 Output SMPS Transformer, 265 V ac, 370 V dc, 24 V dc RS stock no. 792-4401 Mfr. Part No. 47164 Subtotal (1 unit) R 411,45(exc. VAT) R 411,45/unit Quantity	Myrra	SMPS Transformer	24 V dc	265 V ac, 370 V dc	-	3	-	-	-	-	1350mA	-	-	-40°C	-	-	-	-	85°C	-	47000	EN 61558-2-17, EN 55014-1, EN 55014-2, EN 55022 Class B, UL 94-V0, EN 60950, EN 60335, EN 61000-4-x	-	4000V ac
In Stock Myrra 2 Output SMPS Transformer, 265 V ac, 370 V dc RS stock no. 792-4388 Mfr. Part No. 47114 Subtotal (1 unit) R 374,68(exc. VAT) R 374,68/unit Quantity	Myrra	SMPS Transformer	-	265 V ac, 370 V dc	-	2	-	-	-	-	-	-	-	-25°C	-	-	-	-	70°C	-	47000	EN 55014-1, EN 55014-2, UL 94-V0, EN 61000-4-x, EN 61558-2-17, EN 60335, EN 55022 Class B, EN 60950	-	4000V ac
Limited stock Myrra 2 Output SMPS Transformer 5.4 W Output, 265 V ac, 370 V dc, 24 V dc RS stock no. 792-4348 Mfr. Part No. 47122 Subtotal (1 unit) R 413,94(exc. VAT) R 413,94/unit Quantity	Myrra	SMPS Transformer	24 V dc	265 V ac, 370 V dc	-	2	-	-	-	5.4W	1350mA	-	-	-40°C	-	-	-	-	85°C	-	47000	UL 94-V0, EN 55014-1, EN 60335, EN 55014-2, EN 61558-2-17, EN 55022 Class B, EN 60950, EN 61000-4-x	-	4000V ac

SMPS Transformers

How do switch mode power supply (SMPS) transformers work?

Types of switch mode power supply (SMPS) transformers

188 Products showing for SMPS Transformers

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