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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.

186 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	-	0.35A	48mm	40mm	50°C	-	-	No	100g	-
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	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
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	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
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	1350mA	-	-	-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
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
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	-	4000V
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	0.2A	26.7mm	21.8mm	70°C	-	-	RoHS, UL, CE, VDE, ENEC	30g	-
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	-	-
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 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
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	-	-
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	0.21, 2A	-	-	-	-	-	-	-	50°C	-	EE16	CEI950, CEI335, CEI61558	-	3750V 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) £26.60(exc. VAT) £26.60/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
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 Wurth Elektronik 2 Output Gate Drive Transformer, 9/18 V, 18 V, 7 μH RS Stock No. 227-8209 Mfr. Part No. 750318131 Subtotal (1 unit) £5.04(exc. VAT) £5.04/unit Quantity	Wurth Elektronik	Gate Drive Transformer	18 V	-	9/18 V	-	-	2	Surface	-	-	7μH	-	0.32A	-	11.3mm	-40°C	8	1.95A	10.95mm	11.9mm	130°C	-	WE-AGDT	RoHS, REACH	-	-
In Stock Myrra 3 Output SMPS Transformer 5.4 W Output, 265 V ac, 370 V dc, 3.3 to 24 V (Single Output), 5 to 18 V (Dual Output) RS Stock No. 792-4436 Mfr. Part No. 47254 Subtotal (1 unit) £21.33(exc. VAT) £21.33/unit Quantity	Myrra	SMPS Transformer	3.3 to 24 V (Single Output), 5 to 18 V (Dual Output)	-	265 V ac, 370 V dc	-	-	3	-	-	-	-	5.4W	110, 1350mA	-	-	-40°C	-	-	-	-	85°C	-	47000	EN 60950, UL 94-V0, EN 61000-4-x, EN 55014-1, UL components, EN 55022 Class B, EN 61558-2-17, EN 60335, EN 55014-2	-	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) £2.17(exc. VAT) £2.17/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	-	-
Limited stock Myrra 5 Output SMPS Transformer 5 W Output, 265 V, 85 to 370 V ac, 3.3 V RS Stock No. 792-4366 Mfr. Part No. 47151 Subtotal (1 unit) £19.47(exc. VAT) £19.47/unit Quantity	Myrra	SMPS Transformer	3.3 V	-	265 V, 85 to 370 V ac	-	-	5	Through Hole	-	-	-	5W	1350mA	-	31.7mm	-25°C	4	0.2A	26.7mm	21.8mm	50°C	-	-	RoHS, CE, VDE, ENEC, UL	30g	-
In Stock Bourns 2 Output SMPS Transformer 22 W Output, 265 V ac, 12 V, 90 μH RS Stock No. 285-0571 Mfr. Part No. 094929 Subtotal (1 unit) £4.60(exc. VAT) £4.60/unit Quantity	Bourns	SMPS Transformer	12 V	-	265 V ac	-	-	2	Through Hole	-	-	90μH	22W	-	-	-	-25°C	-	-	-	-	125°C	-	094929	EN 62368, RoHS, EN 60335 EN 61558	-	-
Temporarily out of stock Bourns 1 Output Switch Mode Power Supply, 24 V, 15 V, 430 μH RS Stock No. 854-377 Mfr. Part No. SM91207L-E Subtotal (1 tape of 2 units) £6.05(exc. VAT) £3.025/unit Quantity	Bourns	Switch Mode Power Supply	15 V	-	24 V	-	-	1	Surface Mount	-	-	430μH	-	500mA	-	13.2mm	-40°C	4	-	11.61mm	11.8mm	125°C	-	SM	IEC/UL 62368-1	-	2500V ac

SMPS Transformers

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

Types of switch mode power supply (SMPS) transformers

186 Products showing for SMPS Transformers

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