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 (IDR) 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 MID-OLTI UCC28740 160 uH 92.4 W 750343004 Wurth Elektronik 1: Rp250.239 536In Stock	Mfr. Part No. 750343004 Mouser Part No 710-750343004	Wurth Elektronik	Power Transformers - Board Mount MID-OLTI UCC28740 160 uH 92.4 W Learn More about Wurth Elektronik wurth electronics ac dc converter transformers	Datasheet	536In Stock	Rp250.239 Rp237.764 Rp221.069 Rp200.155 Rp183.460	Min.: 1 Mult.: 1	Flyback Transformers	106 V to 286 V	24 V	92.4 W	3.85 A	Through Hole	Dual Primary Winding	Single Secondary Winding	30.5 mm	24 mm	33 mm	MID-OLTI
Power Transformers - Board Mount WE-UNIT 5.6W SMD Offline Trnsfmr 7508170311 Wurth Elektronik 1: Rp91.180 880In Stock	Mfr. Part No. 7508170311 Mouser Part No 710-7508170311	Wurth Elektronik	Power Transformers - Board Mount WE-UNIT 5.6W SMD Offline Trnsfmr Learn More about Wurth Elektronik wurthWEUNITTransformer	Datasheet	880In Stock	Cut Tape Rp91.180 Rp84.392 Reel Rp63.294 MouseReel Available	Min.: 1 Mult.: 1 : 175	Power	55 VAC to 265 VAC	12 V	5 W	420 mA	SMD/SMT	Dual Primary Winding	Dual Secondary Winding	13.8 mm	23.9 mm	11 mm	MID-OLEE
Power Transformers - Board Mount MID-SLIM Offline 250uH 50kHz 34mOhm 760871333 Wurth Elektronik 1: Rp215.566 1.303In Stock	Mfr. Part No. 760871333 Mouser Part No 710-760871333	Wurth Elektronik	Power Transformers - Board Mount MID-SLIM Offline 250uH 50kHz 34mOhm Learn More about Wurth Elektronik wurth electronics ac dc converter transformers	Datasheet	1.303In Stock	Rp215.566 Rp179.791 Rp179.424 Rp169.701 View Rp159.794 Rp149.703	Min.: 1 Mult.: 1	Offline Transformers	85 VAC to 265 VAC	12 V, 12 V, 12 V	67.5 W	1.875 A, 1.875 A, 1.875 A	Through Hole	Dual Primary Winding	Triple Secondary Winding	29.4 mm	47.5 mm	12 mm	WE-SLIM
Power Transformers - Board Mount MID-OLLT LT3798 600 uH 14 W 750813144 Wurth Elektronik 1: Rp115.029 997In Stock	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	997In Stock	Rp115.029 Rp106.774 Rp98.701 Rp95.399 Rp82.190	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 MID-OLTI UCC28740 230 uH 60 W 750343068 Wurth Elektronik 1: Rp241.066 817In Stock	Mfr. Part No. 750343068 Mouser Part No 710-750343068	Wurth Elektronik	Power Transformers - Board Mount MID-OLTI UCC28740 230 uH 60 W Learn More about Wurth Elektronik wurth electronics ac dc converter transformers	Datasheet	817In Stock	Rp241.066 Rp228.958 Rp212.997 Rp192.816 Quote Quote	Min.: 1 Mult.: 1	Flyback Transformers	94 VAC to 445 VAC	24 V	60 W	2.5 A	Through Hole	Dual Primary Winding	Single Secondary Winding	29.2 mm	30.35 mm	29.3 mm	MID-OLTI
Power Transformers - Board Mount MID-OLTI UCC28722 1.35 mH 6 W 750342104 Wurth Elektronik 1: Rp149.153 1.124In Stock	Mfr. Part No. 750342104 Mouser Part No 710-750342104	Wurth Elektronik	Power Transformers - Board Mount MID-OLTI UCC28722 1.35 mH 6 W Learn More about Wurth Elektronik wurth elec WE FB flyback transformers	Datasheet	1.124In Stock	Rp149.153 Rp129.156 Rp128.972 Rp117.965 View Rp110.626 Rp97.234	Min.: 1 Mult.: 1	Flyback Transformers	85 VAC to 265 VAC	12 V	6 W	500 mA	Through Hole	Dual Primary Winding	Single Secondary Winding	16.9 mm	18.8 mm	13.31 mm	MID-OLTI
Power Transformers - Board Mount WE-UOST Univ Offline 1250uH 0.8A 190mOhm 760871534 Wurth Elektronik 1: Rp177.956 1.459In Stock	Mfr. Part No. 760871534 Mouser Part No 710-760871534	Wurth Elektronik	Power Transformers - Board Mount WE-UOST Univ Offline 1250uH 0.8A 190mOhm Learn More about Wurth Elektronik wurth uost transformers	Datasheet	1.459In Stock	Cut Tape Rp177.956 Rp173.370 Rp169.701 Rp159.427 Reel Rp144.750 View Rp158.326 Rp132.642 Rp120.533 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 48V 760895451 Wurth Elektronik 1: Rp305.828 9In Stock	Mfr. Part No. 760895451 Mouser Part No 710-760895451	Wurth Elektronik	Power Transformers - Board Mount WE-LLCR Size ETD34 600uH 150W 48V Learn More about Wurth Elektronik wurth llcr transformers	Datasheet	9In Stock	Rp305.828 Rp292.986 Rp274.640 Rp247.121 Rp219.602	Min.: 1 Mult.: 1	Power	255 VAC to 283 VAC	48 V	150 W	3.1 A	Through Hole	Single Primary Winding	Dual Secondary Winding	36 mm	36 mm	26 mm	WE-LLCR
Power Transformers - Board Mount WE-UNIT Offline 245uH .21A 1.2Ohm 7491181024 Wurth Elektronik 1: Rp134.843 110In Stock	Mfr. Part No. 7491181024 Mouser Part No 710-7491181024	Wurth Elektronik	Power Transformers - Board Mount WE-UNIT Offline 245uH .21A 1.2Ohm Learn More about Wurth Elektronik wurthWEUNITTransformer	Datasheet	110In Stock	Rp134.843 Rp118.515 Rp112.278 Rp106.040 View Rp99.802 Rp97.050	Min.: 1 Mult.: 1	Power	85 VAC to 265 VAC	24 V	3 W	125 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 .85A 26Ohm 749118205 Wurth Elektronik 1: Rp148.419 121In Stock	Mfr. Part No. 749118205 Mouser Part No 710-749118205	Wurth Elektronik	Power Transformers - Board Mount WE-UNIT Offline 175uH .85A 26Ohm Learn More about Wurth Elektronik wurthWEUNITTransformer	Datasheet	121In Stock	Rp148.419 Rp130.440 Rp123.469 Rp109.709 Rp109.159	Min.: 1 Mult.: 1	Power	85 VAC to 265 VAC	5 V	9 W	600 mA	Through Hole	Single Primary Winding	Single Secondary Winding	18 mm	16.5 mm	18 mm	WE-UNIT
Power Transformers - Board Mount MID-OLTI UCC28910 1.1 mH 6 W 750313739 Wurth Elektronik 1: Rp127.138 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 Rp127.138 Rp117.231 Reel Rp117.231 Rp87.877 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 TH .8uH 1.4A 12V 7508116313 Wurth Elektronik 1: Rp152.639 25In Stock	Mfr. Part No. 7508116313 Mouser Part No 710-7508116313	Wurth Elektronik	Power Transformers - Board Mount MID-OLEFD EFD20 TH .8uH 1.4A 12V Learn More about Wurth Elektronik midcom wurth MID OLEFD EFD20 transformers	Datasheet	25In Stock	Rp152.639 Rp142.365 Rp135.944 Rp129.156 View Rp114.846 Rp96.133	Min.: 1 Mult.: 1	Power	85 VAC to 265 VAC	12 V, 12 V	20.4 W	850 mA, 850 mA	Through Hole	Dual Primary Winding	Dual Secondary Winding	21.5 mm	29 mm	12 mm	WE-OLEFD
Power Transformers - Board Mount WE-UOST Univ Offline 1310uH 0.8A 3000mOhm 760871113 Wurth Elektronik 1: Rp177.956 249In Stock	Mfr. Part No. 760871113 Mouser Part No 710-760871113	Wurth Elektronik	Power Transformers - Board Mount WE-UOST Univ Offline 1310uH 0.8A 3000mOhm Learn More about Wurth Elektronik wurth uost transformers	Datasheet	249In Stock	Cut Tape Rp177.956 Rp173.370 Rp169.701 Rp159.427 Reel Rp144.750 View Rp158.326 Rp132.642 Rp120.533 MouseReel Available	Min.: 1 Mult.: 1 : 150	Power	85 VAC to 265 VAC	5 V	6.25 W	1.25 A	SMD/SMT	Single Primary Winding	Dual Secondary Winding	25.81 mm	16.6 mm	13.5 mm	WE-UOST
Power Transformers - Board Mount MID-OLSTM L6599A 1.396 mH 12 W 760871131 Wurth Elektronik 1: Rp139.063 223In Stock	Mfr. Part No. 760871131 Mouser Part No 710-760871131	Wurth Elektronik	Power Transformers - Board Mount MID-OLSTM L6599A 1.396 mH 12 W Learn More about Wurth Elektronik wurthWEUNITTransformer	Datasheet	223In Stock	Rp139.063 Rp129.156 Rp119.249 Rp109.159 View Rp99.252 Rp82.007 Quote	Min.: 1 Mult.: 1	Power	85 VAC to 265 VAC	12 V, 12 V	12 W	500 mA, 500 mA	Through Hole	Single Primary Winding	Dual Secondary Winding	22.2 mm	25 mm	16 mm	MID-OLSTM
Power Transformers - Board Mount WE-UOST Univ Offline 1250uH 0.8A 2920mOhm 760871135 Wurth Elektronik 1: Rp180.892 198In 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	198In Stock	Cut Tape Rp180.892 Rp177.773 Rp165.114 Reel Rp144.750 Rp132.642 Rp120.533 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 MID-OLON Flyback Transformer 750341793 Wurth Elektronik 1: Rp192.266 304In Stock	Mfr. Part No. 750341793 Mouser Part No 710-750341793	Wurth Elektronik	Power Transformers - Board Mount MID-OLON Flyback Transformer Learn More about Wurth Elektronik wurth electronics ac dc converter transformers	Datasheet	304In Stock	Rp192.266 Rp192.083 Rp181.075 Rp176.489 View Rp166.398 Rp151.171	Min.: 1 Mult.: 1	Flyback Transformers	85 VAC to 600 VAC	5 V, 12 V	9.8 W	400 mA, 1 A	Through Hole	Dual Primary Winding	Dual Secondary Winding	23 mm	22 mm	17.53 mm	MID-OLON
Power Transformers - Board Mount MID-OLEFD EFD20 TH .8uH 1.4A 24V 750811644 Wurth Elektronik 1: Rp111.360 996In Stock	Mfr. Part No. 750811644 Mouser Part No 710-750811644	Wurth Elektronik	Power Transformers - Board Mount MID-OLEFD EFD20 TH .8uH 1.4A 24V Learn More about Wurth Elektronik midcom wurth MID OLEFD EFD20 transformers	Datasheet	996In Stock	Rp111.360 Rp104.205 Rp99.252 Rp96.867 View Rp94.482 Rp90.079 Rp89.895	Min.: 1 Mult.: 1	Power	85 VAC to 265 VAC	24 V, 24 V	19.2 W	1.4 A	Through Hole	Dual Primary Winding	Dual Secondary Winding	21.5 mm	29 mm	12 mm	WE-OLEFD
Power Transformers - Board Mount WE-FB SMD Flyback Dialog Semi iW1830 750343109 Wurth Elektronik 1: Rp430.581 998In Stock	Mfr. Part No. 750343109 Mouser Part No 710-750343109	Wurth Elektronik	Power Transformers - Board Mount WE-FB SMD Flyback Dialog Semi iW1830 Learn More about Wurth Elektronik wurth electronics dc dc converter transformers	Datasheet	998In Stock	Rp430.581 Rp397.374 Rp331.145 Rp273.172 Quote Quote	Min.: 1 Mult.: 1	Flyback Transformers	90 VAC to 264 VAC	5 V	15 W	3 A	Through Hole	Dual Primary Winding	Single Secondary Winding	22.2 mm	26 mm	16 mm	MID-OLDIA
Power Transformers - Board Mount WE-UOST Univ Offline 1310uH 0.8A 450mOhm 760871543 Wurth Elektronik 1: Rp180.892 268In Stock	Mfr. Part No. 760871543 Mouser Part No 710-760871543	Wurth Elektronik	Power Transformers - Board Mount WE-UOST Univ Offline 1310uH 0.8A 450mOhm Learn More about Wurth Elektronik wurth uost transformers	Datasheet	268In Stock	Cut Tape Rp180.892 Rp177.773 Rp165.114 Reel Rp144.750 Rp132.642 Rp120.533 MouseReel Available	Min.: 1 Mult.: 1 : 150	Power	85 VAC to 265 VAC	24 V	7.2 W	300 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-UOST Univ Offline 1500uH 0.8A 4200mOhm 760875112 Wurth Elektronik 1: Rp177.956 171In Stock	Mfr. Part No. 760875112 Mouser Part No 710-760875112	Wurth Elektronik	Power Transformers - Board Mount WE-UOST Univ Offline 1500uH 0.8A 4200mOhm Learn More about Wurth Elektronik wurth uost transformers	Datasheet	171In Stock	Cut Tape Rp177.956 Rp173.370 Rp169.701 Rp159.427 Reel Rp144.750 View Rp155.574 Rp132.642 Rp120.533 MouseReel Available	Min.: 1 Mult.: 1 : 150	Power	195 VAC to 265 VAC	5 V	7.5 W	1.5 A	SMD/SMT	Single Primary Winding	Dual Secondary Winding	25.81 mm	16.6 mm	13.5 mm	WE-UOST
Power Transformers - Board Mount WE-UNIT Offline 280uH .2A .05Ohm 749118105 Wurth Elektronik 1: Rp134.660 166In 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	166In Stock	Rp134.660 Rp118.515 Rp112.278 Rp106.040 View Rp99.802 Rp97.050	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 MID-OLON NCP1251 750 uH 21.6 W 750312495 Wurth Elektronik 1: Rp176.672 556In Stock	Mfr. Part No. 750312495 Mouser Part No 710-750312495	Wurth Elektronik	Power Transformers - Board Mount MID-OLON NCP1251 750 uH 21.6 W Learn More about Wurth Elektronik wurth electronics ac dc converter transformers	Datasheet	556In Stock	Rp176.672 Rp163.096 Rp135.944 Rp112.094 Rp98.518	Min.: 1 Mult.: 1	Flyback Transformers	85 VAC to 265 VAC	12 V	21.6 W	1.8 A	Through Hole	Dual Primary Winding	Single Secondary Winding	23 mm	22 mm	17.53 mm	MID-OLON
Power Transformers - Board Mount MID-OLTI LM5023 400 uH 65.2 W 750313417 Wurth Elektronik 1: Rp326.559 195In Stock	Mfr. Part No. 750313417 Mouser Part No 710-750313417	Wurth Elektronik	Power Transformers - Board Mount MID-OLTI LM5023 400 uH 65.2 W Learn More about Wurth Elektronik wurth electronics ac dc converter transformers	Datasheet	195In Stock	Cut Tape Rp326.559 Rp301.425 Reel Rp301.425 Rp207.310 MouseReel Available	Min.: 1 Mult.: 1 : 100	Signal Transformers	85 VAC to 265 VAC	19 V	65.2 W	3.43 A	SMD/SMT	Dual Primary Winding	Triple Secondary Winding	27.03 mm	32.31 mm	13.97 mm	MID-OLTI
Power Transformers - Board Mount MID-OLLT LT3798 180 uH 108 W 750811351 Wurth Elektronik 1: Rp272.438 141In Stock 1.000Expected 17/12/2026	Mfr. Part No. 750811351 Mouser Part No 710-750811351	Wurth Elektronik	Power Transformers - Board Mount MID-OLLT LT3798 180 uH 108 W Learn More about Wurth Elektronik wurth electronics ac dc converter transformers	Datasheet	141In Stock 1.000Expected 17/12/2026	Rp272.438 Rp268.952 Rp252.074 Rp226.940	Min.: 1 Mult.: 1	Power	85 VAC to 265 VAC	36 V	108 W	3 A	Through Hole	Dual Primary Winding	Triple Secondary Winding	39.6 mm	43.18 mm	30.48 mm	MID-OLLT
Power Transformers - Board Mount MID-OLTI UCC28700 1.8 mH 3 W 750313959 Wurth Elektronik 1: Rp218.868 122In Stock	Mfr. Part No. 750313959 Mouser Part No 710-750313959	Wurth Elektronik	Power Transformers - Board Mount MID-OLTI UCC28700 1.8 mH 3 W Learn More about Wurth Elektronik wurth elec WE FB flyback transformers	Datasheet	122In Stock	Rp218.868 Rp202.173 Rp168.416 Rp122.184	Min.: 1 Mult.: 1	Flyback Transformers	85 VAC to 265 VAC	12 V	3 W	250 mA	Through Hole	Dual Primary Winding	Single Secondary Winding	13.72 mm	20.45 mm	10.41 mm	MID-OLTI