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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.

191 Products showing for SMPS Transformers

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In Stock RS PRO 1 Output SMPS Transformer 12 W Output, 100 → 240 V RS Stock No. 774-8213 Subtotal (1 unit) Kr. 416,90(exc. VAT) Kr. 416,90/unit Quantity		SMPS Transformer	-	100 → 240 V	1	Encapsulated	-	12W	2.5A	-	50mm	-20°C	-	350mA	48mm	40mm	50°C	-	No	100g	-
Limited stock Myrra 5 Output SMPS Transformer 5 W Output, 265 V, 85 → 370 V ac, 3.3 V RS Stock No. 792-4366 Mfr. Part No. 47151 Subtotal (1 unit) Kr. 267,24(exc. VAT) Kr. 267,24/unit Quantity	Myrra	SMPS Transformer	3.3 V	265 V, 85 → 370 V ac	5	Through Hole	-	5W	1.35A	-	31.7mm	-25°C	4	200mA	26.7mm	21.8mm	50°C	-	RoHS, CE, VDE, ENEC, UL	30g	-
Currently unavailable TDK-Lambda 4 Output Switching Power Supply RS Stock No. 231-7776 Mfr. Part No. CA400 5A12/12E24D Subtotal (1 unit) Kr. 12 743,69(exc. VAT) Kr. 12 743,69/unit Quantity	TDK-Lambda	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
In Stock Myrra 6 Output SMPS Transformer 160 W Output, 265 V ac, 10.5 → 15 V dc, 300 μH RS Stock No. 418-4089 Mfr. Part No. 74070 Subtotal (1 unit) Kr. 365,16(exc. VAT) Kr. 365,16/unit Quantity	Myrra	SMPS Transformer	10.5 → 15 V dc	265 V ac	6	-	300μH	160W	5A	-	-	-	-	-	-	-	50°C	-	CEI950, CEI335, CEI61558	-	3750V ac
Temporarily out of stock Bourns 2 Output SMPS Transformer 22 W Output, 265 V ac, 12 V, 940 μH RS Stock No. 285-0574 Mfr. Part No. 094932 Subtotal (1 tray of 250 units) Kr. 9 335,00(exc. VAT) Kr. 37,34/unit Quantity	Bourns	SMPS Transformer	12 V	265 V ac	2	Through Hole	940μH	22W	-	-	-	-25°C	-	-	-	-	125°C	94932	EN 62368, RoHS, EN 60335 EN 61558	-	-
Temporarily out of 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. 245-8589 Mfr. Part No. 750317331 Subtotal (1 reel of 1200 units) Kr. 27 724,80(exc. VAT) Kr. 23,104/unit Quantity	Wurth Elektronik	Switch Mode Power Supply Transformer	12 V dc	24 V dc	1	Surface	4mH	1.2W	800mA	-	10.2mm	-40°C	6	-	6.73mm	4.19mm	125°C	-	RoHS	-	-
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) Kr. 251,79(exc. VAT) Kr. 251,79/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
In Stock Bourns 2 Output SMPS Transformer, 85/265 V ac, 6 V ac, 3.9 mH RS Stock No. 285-0558 Mfr. Part No. 063929 Subtotal (1 unit) Kr. 28,83(exc. VAT) Kr. 28,83/unit Quantity	Bourns	SMPS Transformer	6 V ac	85/265 V ac	2	Surface	3.9mH	-	-	-	-	-25°C	-	-	-	-	125°C	063929	RoHS	-	-
Limited stock Myrra 3 Output SMPS Transformer 5.4 W Output, 370 V dc, 265 V ac, 24 V dc RS Stock No. 792-4423 Mfr. Part No. 47247 Subtotal (1 unit) Kr. 295,38(exc. VAT) Kr. 295,38/unit Quantity	Myrra	SMPS Transformer	24 V dc	370 V dc, 265 V ac	3	-	-	5.4W	1.35A	-	-	-40°C	-	-	-	-	85°C	47000	EN 61000-4-x, UL 94-V0, UL components, EN 55014-2, EN 55022 Class B, EN 61558-2-17, EN 60335, EN 60950, EN 55014-1	-	4000V ac
Temporarily out of stock Wurth Elektronik 1 Output SMPS Transformer 250 W Output, 360/400 V, 48 V, 400 μH RS Stock No. 163-5623 Mfr. Part No. 760895751 Subtotal (1 tray of 15 units) Kr. 3 280,31(exc. VAT) Kr. 218,687/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
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) Kr. 247,68(exc. VAT) Kr. 247,68/unit Quantity	Myrra	SMPS Transformer	24 V dc	265 V ac, 370 V dc	3	-	-	-	1.35A	-	-	-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
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) Kr. 273,99(exc. VAT) Kr. 273,99/unit Quantity	Myrra	SMPS Transformer	24 V dc	370 V dc, 265 V ac	3	-	-	5.4W	1.35A, 70A	-	-	-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
In Stock Wurth Elektronik 3 Output Gate Drive Transformer 1.5 W Output, 12/18 V, 7.5 V, 42 μH RS Stock No. 288-372 Mfr. Part No. 750319077 Subtotal (1 tape of 1 unit) Kr. 47,13(exc. VAT) Kr. 47,13/tape Quantity	Wurth Elektronik	Gate Drive Transformer	7.5 V	12/18 V	3	Through Hole	42μH	1.5W	-	-	-	-40°C	-	-	-	-	130°C	WE-AGDT	RoHS 2011, 863 REACH or declared EC1907, 2006 Halogen Free JEDEC JS709B Halogen Free IEC 61249-2-21, EU&2015	-	-
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) Kr. 167,37(exc. VAT) Kr. 167,37/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
Limited stock Myrra 5 Output SMPS Transformer 2.5 W Output, 85 → 370 V ac, 265 V, 12 V RS Stock No. 792-4350 Mfr. Part No. 47124 Subtotal (1 unit) Kr. 206,03(exc. VAT) Kr. 206,03/unit Quantity	Myrra	SMPS Transformer	12 V	85 → 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 10 Output SMPS Transformer 110 W Output, 265 V ac, 2 → 18 V dc, 3900 μH RS Stock No. 418-5509 Mfr. Part No. 74003 Subtotal (1 unit) Kr. 74,02(exc. VAT) Kr. 74,02/unit Quantity	Myrra	SMPS Transformer	2 → 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 6 W Output, 85/265 V ac, 9 → 18 V ac, 3 mH RS Stock No. 418-5492 Mfr. Part No. 74002 Subtotal (1 unit) Kr. 75,73(exc. VAT) Kr. 75,73/unit Quantity	Myrra	SMPS Transformer	9 → 18 V ac	85/265 V ac	5	Through Hole	3mH	6W	500mA	Pin	18mm	-	-	-	17.5mm	16mm	50°C	-	RoHS	-	-
In Stock Wurth Elektronik 1 Output Gate Drive Transformer 2.7 W Output, 7/31 V, 27 V, 10 μH RS Stock No. 288-366 Mfr. Part No. 750318616 Subtotal (1 tape of 1 unit) Kr. 56,17(exc. VAT) Kr. 56,17/tape Quantity	Wurth Elektronik	Gate Drive Transformer	27 V	7/31 V	1	Through Hole	10μH	2.7W	-	-	-	-40°C	-	-	-	-	130°C	WE-AGDT	REACH, RoHS	-	-
In Stock Wurth Elektronik 1 Output Gate Drive Transformer 6 W Output, 13 V, 11.5 V, 50 μH RS Stock No. 288-374 Mfr. Part No. 750319331 Subtotal (1 tape of 1 unit) Kr. 56,17(exc. VAT) Kr. 56,17/tape Quantity	Wurth Elektronik	Gate Drive Transformer	11.5 V	13 V	1	Through Hole	50μH	6W	-	-	-	-40°C	-	-	-	-	130°C	-	AECQ00 Grade 1, Free, REACH, RoHS, UL Insulation System Class B	-	-
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. 245-8590P Mfr. Part No. 750317331 Subtotal 1 unit (supplied on a continuous strip) Kr. 33,18(exc. VAT) Kr. 33,18/unit Quantity	Wurth Elektronik	Switch Mode Power Supply Transformer	12 V dc	24 V dc	1	Surface	4mH	1.2W	800mA	-	10.2mm	-40°C	6	-	6.73mm	4.19mm	125°C	-	RoHS	-	-

SMPS Transformers

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

Types of switch mode power supply (SMPS) transformers

191 Products showing for SMPS Transformers

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