Power Transformers - Board Mount

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AC/DC Converter Transformers

Würth Elektronik AC/DC Converter Transformers are designed for offline power applications and meet relevant safety standards and dielectric requirements. AC/DC transformers feature universal offline input with many options for output voltages and offer THT, SMT, and single or multiple output options. Würth Elektronik AC/DC Converter Transformers are ideal for offline switch-mode power supplies (SMPS) used in industrial controls, metering, smart adapters, and auxiliary power supply applications.

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (EUR) Filter the results in the table by unit price based on your quantity.	Qty.	Product	Primary Voltage Rating	Secondary Voltage Rating	Power Rating	Secondary Current Rating	Mounting Style	Primary Winding	Secondary Winding	Length	Width	Height	Series
Power Transformers - Board Mount WE-UNIT 4W SMD Offline Trnsfmr 7508170312 Wurth Elektronik 1: 4,27 € 723In Stock	Mfr. Part No. 7508170312 Mouser Part No 710-7508170312	Wurth Elektronik	Power Transformers - Board Mount WE-UNIT 4W SMD Offline Trnsfmr Learn More about Wurth Elektronik wurthWEUNITTransformer	Datasheet	723In Stock	Cut Tape 4,27 € 3,96 € 3,59 € Reel 2,97 € MouseReel Available	Min.: 1 Mult.: 1 : 175	Power	55 VAC to 265 VAC	15 V	3.2 W	210 mA	SMD/SMT	Dual Primary Winding	Single Secondary Winding	13.8 mm	23.9 mm	11 mm	MID-OLEE
Power Transformers - Board Mount WE-UNIT Offline 220uH .21A .29Ohm 7491181012 Wurth Elektronik 1: 6,32 € 273In Stock 132Expected 2/12/2027	Mfr. Part No. 7491181012 Mouser Part No 710-7491181012	Wurth Elektronik	Power Transformers - Board Mount WE-UNIT Offline 220uH .21A .29Ohm Learn More about Wurth Elektronik wurthWEUNITTransformer	Datasheet	273In Stock 132Expected 2/12/2027	6,32 € 5,56 € 5,27 € 4,98 € View 4,68 € 4,55 €	Min.: 1 Mult.: 1	Power	85 VAC to 265 VAC	12 V	3 W	250 mA	Through Hole	Single Primary Winding	Single Secondary Winding	15 mm	11 mm	16.8 mm	WE-UNIT
Power Transformers - Board Mount WE-UNIT Offline 280uH .2A .05Ohm 749118105 Wurth Elektronik 1: 6,31 € 83In Stock	Mfr. Part No. 749118105 Mouser Part No 710-749118105	Wurth Elektronik	Power Transformers - Board Mount WE-UNIT Offline 280uH .2A .05Ohm Learn More about Wurth Elektronik wurthWEUNITTransformer	Datasheet	83In Stock	6,31 € 5,56 € 5,26 € 4,97 € View 4,68 € 4,55 €	Min.: 1 Mult.: 1	Power	85 VAC to 265 VAC	5 V	3 W	600 mA	Through Hole	Single Primary Winding	Single Secondary Winding	15 mm	11 mm	16.8 mm	WE-UNIT
Power Transformers - Board Mount WE-UNIT Offline 175uH .21A .29Ohm 7491181112 Wurth Elektronik 1: 6,32 € 102In Stock	Mfr. Part No. 7491181112 Mouser Part No 710-7491181112	Wurth Elektronik	Power Transformers - Board Mount WE-UNIT Offline 175uH .21A .29Ohm Learn More about Wurth Elektronik wurthWEUNITTransformer	Datasheet	102In Stock	6,32 € 5,56 € 5,26 € 4,97 € View 4,68 € 4,55 €	Min.: 1 Mult.: 1	Power	85 VAC to 265 VAC	12 V	3 W	250 mA	Through Hole	Single Primary Winding	Single Secondary Winding	21.5 mm	15 mm	12 mm	WE-UNIT
Power Transformers - Board Mount WE-UNIT Offline 112uH .85A 28Ohm 7491182112 Wurth Elektronik 1: 6,96 € 6In Stock	Mfr. Part No. 7491182112 Mouser Part No 710-7491182112	Wurth Elektronik	Power Transformers - Board Mount WE-UNIT Offline 112uH .85A 28Ohm Learn More about Wurth Elektronik wurthWEUNITTransformer	Datasheet	6In Stock	6,96 € 6,11 € 5,47 € 5,14 € 5,12 €	Min.: 1 Mult.: 1	Power	85 VAC to 265 VAC	12 V	8.4 W	250 mA	Through Hole	Single Primary Winding	Dual Secondary Winding	24.5 mm	20.2 mm	16.5 mm	WE-UNIT
Power Transformers - Board Mount MID-OLTI UCC28910 1.1 mH 6 W 750313739 Wurth Elektronik 1: 5,96 € 223In Stock	Mfr. Part No. 750313739 Mouser Part No 710-750313739	Wurth Elektronik	Power Transformers - Board Mount MID-OLTI UCC28910 1.1 mH 6 W Learn More about Wurth Elektronik wurth electronics ac dc converter transformers	Datasheet	223In Stock	Cut Tape 5,96 € 5,50 € Reel 5,50 € 4,12 € MouseReel Available	Min.: 1 Mult.: 1 : 70	Signal Transformers	85 VAC to 265 VAC	5 V	6 W	1.2 A	Through Hole	Single Primary Winding	Single Secondary Winding	20.32 mm	24.38 mm	16 mm	MID-OLTI
Power Transformers - Board Mount MID-OLEFD EFD20 SMD .8uH 1.4A 12V 7508116312 Wurth Elektronik 1: 7,16 € 128In Stock	Mfr. Part No. 7508116312 Mouser Part No 710-7508116312	Wurth Elektronik	Power Transformers - Board Mount MID-OLEFD EFD20 SMD .8uH 1.4A 12V Learn More about Wurth Elektronik midcom wurth MID OLEFD EFD20 transformers	Datasheet	128In Stock	Cut Tape 7,16 € 5,95 € Reel 5,95 € 4,21 € MouseReel Available	Min.: 1 Mult.: 1 : 120	Power	120 VAC to 375 VAC	12 V, 12 V	24 W	1 A, 1 A	SMD/SMT	Dual Primary Winding	Dual Secondary Winding	21.5 mm	33.8 mm	12 mm	WE-OLEFD
Power Transformers - Board Mount MID-OLEFD EFD20 SMD .8uH 1.4A 24V 750811643 Wurth Elektronik 1: 7,12 € 149In Stock	Mfr. Part No. 750811643 Mouser Part No 710-750811643	Wurth Elektronik	Power Transformers - Board Mount MID-OLEFD EFD20 SMD .8uH 1.4A 24V Learn More about Wurth Elektronik midcom wurth MID OLEFD EFD20 transformers	Datasheet	149In Stock	Cut Tape 7,12 € 6,50 € 6,00 € Reel 6,00 € MouseReel Available	Min.: 1 Mult.: 1 : 120	Power	85 VAC to 265 VAC	24 V, 24 V	24 W	500 mA, 500 mA	SMD/SMT	Dual Primary Winding	Dual Secondary Winding	21.5 mm	33.8 mm	12 mm	WE-OLEFD
Power Transformers - Board Mount MID-OLEFD 125-375V 68-100kHz 750811645 Wurth Elektronik 1: 8,40 € 67In Stock	Mfr. Part No. 750811645 Mouser Part No 710-750811645	Wurth Elektronik	Power Transformers - Board Mount MID-OLEFD 125-375V 68-100kHz Learn More about Wurth Elektronik midcom wurth MID OLEFD EFD20 transformers	Datasheet	67In Stock	8,40 € 8,30 € 7,77 € 7,00 € 6,22 €	Min.: 1 Mult.: 1	Power	85 VAC to 265 VAC	24 V, 24 V	34.1 W	710 mA, 710 mA	Through Hole	Dual Primary Winding	Dual Secondary Winding	26.3 mm	33 mm	14 mm	WE-OLEFD
Power Transformers - Board Mount MID-OLLT LT3798 600 uH 14 W 750813134 Wurth Elektronik 1: 6,78 € 191In Stock	Mfr. Part No. 750813134 Mouser Part No 710-750813134	Wurth Elektronik	Power Transformers - Board Mount MID-OLLT LT3798 600 uH 14 W Learn More about Wurth Elektronik wurth electronics ac dc converter transformers	Datasheet	191In Stock	6,78 € 6,30 € 5,32 € 4,84 € 3,99 €	Min.: 1 Mult.: 1	Flyback Transformers	90 VAC to 265 VAC	14 V	14 W	1 A	Through Hole	Single Primary Winding	Dual Secondary Winding	18 mm	16.5 mm	18 mm	MID-OLLT
Power Transformers - Board Mount MID-OLLT LT3798 600 uH 14 W 750813144 Wurth Elektronik 1: 5,56 € 62In Stock 1.000Expected 2/25/2027	Mfr. Part No. 750813144 Mouser Part No 710-750813144	Wurth Elektronik	Power Transformers - Board Mount MID-OLLT LT3798 600 uH 14 W Learn More about Wurth Elektronik wurth electronics ac dc converter transformers	Datasheet	62In Stock 1.000Expected 2/25/2027	5,56 € 5,01 € 4,73 € 4,65 € View 4,47 € 4,22 €	Min.: 1 Mult.: 1	Flyback Transformers	85 VAC to 265 VAC	28 V	14 W	500 mA	Through Hole	Single Primary Winding	Dual Secondary Winding	18 mm	16.5 mm	18 mm	MID-OLLT
Power Transformers - Board Mount WE-UNIT 5.8W SMD Offline Trnsfmr 750817015 Wurth Elektronik 1: 4,27 € 34In Stock	Mfr. Part No. 750817015 Mouser Part No 710-750817015	Wurth Elektronik	Power Transformers - Board Mount WE-UNIT 5.8W SMD Offline Trnsfmr Learn More about Wurth Elektronik wurthWEUNITTransformer	Datasheet	34In Stock	Cut Tape 4,27 € 3,96 € 3,59 € 3,27 € Reel 3,27 € 2,97 € MouseReel Available	Min.: 1 Mult.: 1 : 175	Power	55 VAC to 265 VAC	5 V	4.5 W	900 mA	SMD/SMT	Dual Primary Winding	Dual Secondary Winding	13.8 mm	23.9 mm	11 mm	MID-OLEE
Power Transformers - Board Mount WE-UOST Univ Offline 1250uH 0.8A 2920mOhm 760871135 Wurth Elektronik 1: 8,48 € 128In Stock	Mfr. Part No. 760871135 Mouser Part No 710-760871135	Wurth Elektronik	Power Transformers - Board Mount WE-UOST Univ Offline 1250uH 0.8A 2920mOhm Learn More about Wurth Elektronik wurth uost transformers	Datasheet	128In Stock	Cut Tape 8,48 € 8,33 € 7,74 € Reel 6,79 € 6,22 € 5,65 € MouseReel Available	Min.: 1 Mult.: 1 : 150	Power	85 VAC to 265 VAC	12 V	6.6 W	550 mA	SMD/SMT	Single Primary Winding	Dual Secondary Winding	25.81 mm	16.6 mm	13.5 mm	WE-UOST
Power Transformers - Board Mount WE-LLCR Size ETD34 600uH 150W 24V 760895441 Wurth Elektronik 1: 14,34 € 33In Stock	Mfr. Part No. 760895441 Mouser Part No 710-760895441	Wurth Elektronik	Power Transformers - Board Mount WE-LLCR Size ETD34 600uH 150W 24V Learn More about Wurth Elektronik wurth llcr transformers	Datasheet	33In Stock	14,34 € 13,74 € 12,87 € 12,56 € View 11,47 € 11,46 € 10,29 €	Min.: 1 Mult.: 1	Power	255 VAC to 283 VAC	24 V	150 W	6.2 A	Through Hole	Single Primary Winding	Dual Secondary Winding	36 mm	36 mm	26 mm	WE-LLCR
Power Transformers - Board Mount WE-LLCR Size ETD39 500uH 200W 12V 760895631 Wurth Elektronik 1: 15,39 € 6In Stock 15Expected 2/5/2027	Mfr. Part No. 760895631 Mouser Part No 710-760895631	Wurth Elektronik	Power Transformers - Board Mount WE-LLCR Size ETD39 500uH 200W 12V Learn More about Wurth Elektronik wurth llcr transformers	Datasheet	6In Stock 15Expected 2/5/2027	15,39 € 14,75 € 13,83 € 12,44 € 11,06 €	Min.: 1 Mult.: 1	Power	255 VAC to 283 VAC	12 V	200 W	16.7 A	Through Hole	Single Primary Winding	Dual Secondary Winding	44 mm	43 mm	30 mm	WE-LLCR
Power Transformers - Board Mount WE-LLCR Size ETD39 500uH 200W 24V 760895641 Wurth Elektronik 1: 15,39 € 30In Stock	Mfr. Part No. 760895641 Mouser Part No 710-760895641	Wurth Elektronik	Power Transformers - Board Mount WE-LLCR Size ETD39 500uH 200W 24V Learn More about Wurth Elektronik wurth llcr transformers	Datasheet	30In Stock	15,39 € 14,34 € 13,83 € 12,44 € View 12,32 € 11,06 €	Min.: 1 Mult.: 1	Power	255 VAC to 283 VAC	24 V	200 W	8.3 A	Through Hole	Single Primary Winding	Dual Secondary Winding	44 mm	43 mm	30 mm	WE-LLCR
Power Transformers - Board Mount WE-LLCR NCP1399Size ETD39 5 00uH 200W 48V 760895651 Wurth Elektronik 1: 15,39 € 24In Stock	Mfr. Part No. 760895651 Mouser Part No 710-760895651	Wurth Elektronik	Power Transformers - Board Mount WE-LLCR NCP1399Size ETD39 5 00uH 200W 48V Learn More about Wurth Elektronik wurth llcr transformers	Datasheet	24In Stock	15,39 € 14,75 € 13,83 € 12,44 € 11,06 €	Min.: 1 Mult.: 1	Power	255 VAC to 283 VAC	48 V	200 W	4.2 A	Through Hole	Single Primary Winding	Dual Secondary Winding	44 mm	43 mm	30 mm	WE-LLCR
Power Transformers - Board Mount WE-LLCR Size ETD44 400uH 250W 24V 760895741 Wurth Elektronik 1: 18,58 € 80In Stock 60Expected 11/27/2026	Mfr. Part No. 760895741 Mouser Part No 710-760895741	Wurth Elektronik	Power Transformers - Board Mount WE-LLCR Size ETD44 400uH 250W 24V Learn More about Wurth Elektronik wurth llcr transformers	Datasheet	80In Stock 60Expected 11/27/2026	18,58 € 17,80 € 16,68 € 15,02 € 12,79 €	Min.: 1 Mult.: 1	Power	255 VAC to 283 VAC	24 V	250 W	10.4 A	Through Hole	Single Primary Winding	Dual Secondary Winding	48 mm	46 mm	27.5 mm	WE-LLCR
Power Transformers - Board Mount WE-LLCR Size ETD44 400uH 250W 48V 760895751 Wurth Elektronik 15: 17,31 € 15In Stock	Mfr. Part No. 760895751 Mouser Part No 710-760895751	Wurth Elektronik	Power Transformers - Board Mount WE-LLCR Size ETD44 400uH 250W 48V Learn More about Wurth Elektronik wurth llcr transformers	Datasheet	15In Stock	17,31 € 16,68 € 15,02 € 14,87 € 12,79 €	Min.: 15 Mult.: 15	Power	255 VAC to 283 VAC	48 V	250 W	5.2 A	Through Hole	Single Primary Winding	Dual Secondary Winding	48 mm	46 mm	27.5 mm	WE-LLCR
Power Transformers - Board Mount MID-OLTI UCC28711 450 uH 750318302 Wurth Elektronik 1: 12,55 € 23In Stock	Mfr. Part No. 750318302 Mouser Part No 710-750318302	Wurth Elektronik	Power Transformers - Board Mount MID-OLTI UCC28711 450 uH Learn More about Wurth Elektronik wurth electronics ac dc converter transformers	Datasheet	23In Stock	12,55 € 11,58 € 10,62 € 9,66 € View 7,96 € 7,00 €	Min.: 1 Mult.: 1	Transformers	120 VDC to 375 VDC	16.7 V		50 mA	Through Hole	Dual Primary Winding	Single Secondary Winding	26.3 mm	33 mm	14.3 mm	MID-OLTI
Power Transformers - Board Mount MID-OLSTM Viper114LS 1.2 mH 750810014 Wurth Elektronik 1: 3,46 € 110In Stock	Mfr. Part No. 750810014 Mouser Part No 710-750810014	Wurth Elektronik	Power Transformers - Board Mount MID-OLSTM Viper114LS 1.2 mH Learn More about Wurth Elektronik wurth electronics ac dc converter transformers	Datasheet	110In Stock	3,46 € 3,15 € 2,72 € 2,35 €	Min.: 1 Mult.: 1	Transformers	85 VAC	5 V		1.2 A	Through Hole	Single Primary Winding	Dual Secondary Winding	15 mm	15.75 mm	18.5 mm	MID-OLSTM
Power Transformers - Board Mount MID-OLEFD EFD20 SMD .8uH 1.4A 40V 7508112511 Wurth Elektronik 1: 6,88 € 63In Stock	Mfr. Part No. 7508112511 Mouser Part No 710-7508112511	Wurth Elektronik	Power Transformers - Board Mount MID-OLEFD EFD20 SMD .8uH 1.4A 40V Learn More about Wurth Elektronik midcom wurth MID OLEFD EFD20 transformers	Datasheet	63In Stock	Cut Tape 6,88 € 5,94 € 4,84 € Reel 4,21 € MouseReel Available	Min.: 1 Mult.: 1 : 120	Power	85 VAC to 265 VAC	40 V	24 W	600 mA	SMD/SMT	Dual Primary Winding	Single Secondary Winding	21.5 mm	33.8 mm	12 mm	WE-OLEFD
Power Transformers - Board Mount MID-OLEFD 125-375V 68-170kHz 7508116314 Wurth Elektronik 1: 7,71 € 89In Stock	Mfr. Part No. 7508116314 Mouser Part No 710-7508116314	Wurth Elektronik	Power Transformers - Board Mount MID-OLEFD 125-375V 68-170kHz Learn More about Wurth Elektronik midcom wurth MID OLEFD EFD20 transformers	Datasheet	89In Stock	7,71 € 7,26 € 6,84 € 6,56 € View 6,24 € 5,81 €	Min.: 1 Mult.: 1	Power	85 VAC to 265 VAC	12 V, 12 V	31.2 W	1.3 A, 1.3 A	Through Hole	Dual Primary Winding	Dual Secondary Winding	26.3 mm	33 mm	14 mm	WE-OLEFD
Power Transformers - Board Mount MID-OLEFD EFD20 SMD .8uH 1.4A 5V 750811913 Wurth Elektronik 1: 6,88 € 89In Stock	Mfr. Part No. 750811913 Mouser Part No 710-750811913	Wurth Elektronik	Power Transformers - Board Mount MID-OLEFD EFD20 SMD .8uH 1.4A 5V Learn More about Wurth Elektronik midcom wurth MID OLEFD EFD20 transformers	Datasheet	89In Stock	Cut Tape 6,88 € 5,94 € 4,84 € Reel 4,21 € MouseReel Available	Min.: 1 Mult.: 1 : 120	Power	85 VAC to 265 VAC	5 V, 5 V, 7 V	20.2 W	1.1 A, 1.25 A, 1.25 A	SMD/SMT	Dual Primary Winding	Triple Secondary Winding	21.5 mm	33.8 mm	12 mm	WE-OLEFD
Power Transformers - Board Mount WE-UNIT 4.6W SMD Offline Trnsfmr 750817014 Wurth Elektronik 1: 4,27 € 144In Stock	Mfr. Part No. 750817014 Mouser Part No 710-750817014	Wurth Elektronik	Power Transformers - Board Mount WE-UNIT 4.6W SMD Offline Trnsfmr Learn More about Wurth Elektronik wurthWEUNITTransformer	Datasheet	144In Stock	Cut Tape 4,27 € 3,96 € 3,59 € 3,27 € Reel 3,27 € MouseReel Available	Min.: 1 Mult.: 1 : 175	Power	55 VAC to 265 VAC	5 V	3.5 W	700 mA	SMD/SMT	Dual Primary Winding	Dual Secondary Winding	13.8 mm	23.9 mm	11 mm	MID-OLEE