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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) £28.42(exc. VAT) £28.42/unit Quantity		SMPS Transformer	-	100 to 240 V	-	1	Encapsulated	-	-	12W	2.5A	-	50mm	-20°C	-	350mA	48mm	40mm	50°C	-	-	No	100g	-
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) £16.69(exc. VAT) £16.69/unit Quantity	Myrra	SMPS Transformer	24 V	85 to 370 V dc, 85 to 265 V ac	-	1	-	-	-	5.4W	1.35A	-	-	-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 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) £16.16(exc. VAT) £16.16/unit Quantity	Myrra	SMPS Transformer	12 V dc	370 V dc, 265 V ac	-	1	Through Hole	-	-	5W	1.35A	-	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 Wurth Elektronik 2 Output Gate Drive Transformer 6 W Output, 9/18 V, 4 to 19 V, 7 μH RS Stock No. 288-369 Mfr. Part No. 750319497 Subtotal (1 tape of 1 unit) £4.09(exc. VAT) £4.09/tape Quantity	Wurth Elektronik	Gate Drive Transformer	4 to 19 V	9/18 V	-	2	Through Hole	-	7μH	6W	-	-	-	-40°C	-	-	-	-	130°C	-	-	RoHS, REACH	-	-
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) £20.66(exc. VAT) £20.66/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
Temporarily out of stock Myrra 3 Output SMPS Transformer 30 W Output, 85 to 265 V ac, 8 to 17 V ac, 3.3 to 7 V ac RS Stock No. 418-5543 Mfr. Part No. 74030 Subtotal (1 unit) £7.95(exc. VAT) £7.95/unit Quantity	Myrra	SMPS Transformer	8 to 17 V ac, 3.3 to 7 V ac	85 to 265 V ac	-	3	Through Hole	-	-	30W	-	Pin	26.5mm	-	-	1.5A	22.5mm	26.5mm	50°C	-	-	UL94-V0, IEC335, IEC950, IEC61558	-	4kV
In Stock Eliwell SMPS Transformer RS Stock No. 509-0979 Mfr. Part No. TCM 230V/12V 3VA Subtotal (1 unit) £18.50(exc. VAT) £18.50/unit Quantity	Eliwell	SMPS Transformer	-	-	-	-	Panel, DIN Rail	-	-	-	-	-	1.5m	-50°C	-	-	-	113mm	80°C	-	-	UL94 V-0	-	-
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) £17.52(exc. VAT) £17.52/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 10 Output SMPS Transformer 110 W Output, 265 V ac, 2 to 18 V dc, 3900 μH RS Stock No. 418-5509 Mfr. Part No. 74003 Subtotal (1 unit) £5.39(exc. VAT) £5.39/unit Quantity	Myrra	SMPS Transformer	2 to 18 V dc	265 V ac	-	10	-	-	3900μH	110W	210mA, 2mA	-	-	-	-	-	-	-	50°C	-	EE16	CEI950, CEI335, CEI61558	-	3750V ac
Limited stock Myrra 5 Output SMPS Transformer 2.5 W Output, 85 to 370 V ac, 265 V, 12 V RS Stock No. 792-4350 Mfr. Part No. 47124 Subtotal (1 unit) £15.01(exc. VAT) £15.01/unit Quantity	Myrra	SMPS Transformer	12 V	85 to 370 V ac, 265 V	-	5	Through Hole	-	-	2.5W	210mA	-	31.7mm	-25°C	4	200mA	26.7mm	21.8mm	70°C	-	-	RoHS, UL, CE, VDE, ENEC	30g	-
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) £5.65(exc. VAT) £5.65/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) £7.66(exc. VAT) £7.66/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	-	-
In Stock Wurth Elektronik 1 Output Gate Drive Transformer 3 W Output, 15 V, 256 μH RS Stock No. 288-375 Mfr. Part No. 750319565 Subtotal (1 tape of 1 unit) £4.09(exc. VAT) £4.09/tape Quantity	Wurth Elektronik	Gate Drive Transformer	-	15 V	-	1	Through Hole	-	256μH	3W	-	-	-	-40°C	-	-	-	-	130°C	-	-	RoHS, REACH, UL Class B 10°C system, Free, AECQ00 Grade 1	-	-
Temporarily out of stock Wurth Elektronik 1 Output SMPS Transformer 150 W Output, 360/400 V, 12 V, 600 μH RS Stock No. 823-5425 Mfr. Part No. 760895431 Subtotal (1 unit) £10.26(exc. VAT) £10.26/unit Quantity	Wurth Elektronik	SMPS Transformer	12 V	360/400 V	-	1	Through Hole	-	600μH	150W	2A	-	36mm	-40°C	12	-	36mm	26mm	125°C	-	WE-LLCR	No	57g	250V
In Stock Myrra 2 Output SMPS Transformer 5.4 W Output, 370 V dc, 265 V ac, 24 V dc RS Stock No. 792-4376 Mfr. Part No. 47155 Subtotal (1 unit) £12.20(exc. VAT) £12.20/unit Quantity	Myrra	SMPS Transformer	24 V dc	370 V dc, 265 V ac	-	2	-	-	-	5.4W	1.35A	-	-	-25°C	-	-	-	-	70°C	-	47000	EN 61000-4-x, UL 94-V0, UL, EN 60950, EN 55014-2, EN 55014-1, EN 61558-2-17, EN 60335, EN 55022 Class B	-	4000V ac
Currently unavailable Myrra SMPS Transformer RS Stock No. 418-5537 Mfr. Part No. 74020 Subtotal (1 unit) £7.41(exc. VAT) £7.41/unit Quantity	Myrra	SMPS Transformer	-	-	-	-	-	-	-	-	3A	-	-	-	-	-	-	-	50°C	-	EL 19	CEI335, CEI61558, CEI950	-	3750V ac
In Stock Wurth Elektronik 2 Output Gate Drive Transformer, 18/36 V, 18 V, 27 μH RS Stock No. 227-8213 Mfr. Part No. 750318208 Subtotal (1 reel of 250 units) £1,085.00(exc. VAT) £4.34/unit Quantity	Wurth Elektronik	Gate Drive Transformer	18 V	18/36 V	-	2	Surface	-	27μH	-	260mA	-	11.3mm	-40°C	8	1.95A	10.95mm	11.9mm	130°C	-	WE-AGDT	RoHS, REACH	-	-
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) £18.34(exc. VAT) £18.34/unit Quantity	Myrra	SMPS Transformer	24 V dc	265 V ac, 370 V dc	-	2	-	-	-	5.4W	1.35A	-	-	-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
Temporarily out of stock Myrra 5 Output SMPS Transformer 4.2 W Output, 85/265 V ac, 7.5 to 15 V ac, 2.1 mH RS Stock No. 418-4146 Mfr. Part No. 74095 Subtotal (1 unit) £7.36(exc. VAT) £7.36/unit Quantity	Myrra	SMPS Transformer	7.5 to 15 V ac	85/265 V ac	-	5	PCB	-	2.1mH	4.2W	900mA	-	18mm	-	-	-	16mm	17.5mm	60°C	-	-	RoHS	-	-
Currently unavailable MEAN WELL 4 Output Switching Power Supply 203 W Output RS Stock No. 414-064 Mfr. Part No. QP-200D Subtotal (1 unit) £103.44(exc. VAT) £103.44/unit Quantity	MEAN WELL	Switching Power Supply	-	-	-	4	Chassis, Chassis Mount	-	-	203W	-	-	215mm	-10°C	-	-	115mm	50mm	60°C	-	QP	AS/NZS62368.1, BSMI CNS143361, CCCGB4943.1, CSA C22.2 No. 62368-1, EAC TP TC 00, IS 13252(Part1)/IEC 60950-1, TUV BS EN/EN 62368-1, UL 62368-1	1.2kg	-

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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