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. 

Results: 185
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Description Datasheet Availability Pricing (KRW) Filter the results in the table by unit price based on your quantity.
Qty. RoHS ECAD Model Product
Primary Voltage Rating
Secondary Voltage Rating
Power Rating
Secondary Current Rating
Mounting Style
Primary Winding
Secondary Winding
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Width
Height
Series
Wurth Elektronik Power Transformers - Board Mount MID-OLTI UCC28740 160 uH 92.4 W
Datasheet
536In Stock
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
Wurth Elektronik Power Transformers - Board Mount MID-SLIM Offline 250uH 50kHz 34mOhm
Datasheet
1,303In Stock
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
Wurth Elektronik Power Transformers - Board Mount MID-OLLT LT3798 600 uH 14 W
Datasheet
997In Stock
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
Wurth Elektronik Power Transformers - Board Mount MID-OLTI UCC28722 1.35 mH 6 W
Datasheet
1,126In Stock
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
Wurth Elektronik Power Transformers - Board Mount WE-UOST Univ Offline 1250uH 0.8A 190mOhm
Datasheet
1,459In Stock
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
Wurth Elektronik Power Transformers - Board Mount WE-LLCR Size ETD34 600uH 150W 48V
Datasheet
9In Stock
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
Wurth Elektronik Power Transformers - Board Mount WE-UNIT Offline 245uH .21A 1.2Ohm
Datasheet
140In Stock
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
Wurth Elektronik Power Transformers - Board Mount WE-UOST Univ Offline 1310uH 0.8A 3000mOhm
Datasheet
249In Stock
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
Wurth Elektronik Power Transformers - Board Mount MID-OLSTM L6599A 1.396 mH 12 W
Datasheet
223In Stock
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
Wurth Elektronik Power Transformers - Board Mount WE-UNIT Offline 280uH .2A .05Ohm
Datasheet
171In Stock
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
Wurth Elektronik Power Transformers - Board Mount MID-OLON NCP1251 750 uH 21.6 W
Datasheet
556In Stock
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
Wurth Elektronik Power Transformers - Board Mount MID-OLTI UCC28740 230 uH 60 W
Datasheet
817In Stock
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
Wurth Elektronik Power Transformers - Board Mount MID-OLON Flyback Transformer
Datasheet
304In Stock
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
Wurth Elektronik Power Transformers - Board Mount MID-OLEFD EFD20 TH .8uH 1.4A 24V
Datasheet
996In Stock
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


Wurth Elektronik Power Transformers - Board Mount WE-UNIT 5.6W SMD Offline Trnsfmr
Datasheet
880In Stock
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
Wurth Elektronik Power Transformers - Board Mount WE-FB SMD Flyback Dialog Semi iW1830
Datasheet
998In Stock
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
Wurth Elektronik Power Transformers - Board Mount WE-UOST Univ Offline 1310uH 0.8A 450mOhm
Datasheet
268In Stock
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
Wurth Elektronik Power Transformers - Board Mount WE-UOST Univ Offline 1500uH 0.8A 4200mOhm
Datasheet
171In Stock
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
Wurth Elektronik Power Transformers - Board Mount MID-OLTI LM5023 400 uH 65.2 W
Datasheet
195In Stock
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
Wurth Elektronik Power Transformers - Board Mount MID-OLLT LT3798 180 uH 108 W
Datasheet
142In Stock
1,000Expected 12/17/2026
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
Wurth Elektronik Power Transformers - Board Mount WE-UNIT Offline 175uH .85A 26Ohm
Datasheet
127In Stock
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
Wurth Elektronik Power Transformers - Board Mount MID-OLTI UCC28700 1.8 mH 3 W
Datasheet
122In Stock
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
Wurth Elektronik Power Transformers - Board Mount MID-OLTI TPS23758 150uH 5V 2.4A Flyback 250kHz 12W
Datasheet
1,128In Stock
2,250Expected 9/2/2026
MouseReel Available
Min.: 1
Mult.: 1
: 125

Flyback Transformers 36 VDC to 57 VDC 5 V 2 A Board Mount Single Primary Winding Dual Secondary Winding 13.97 mm 18.25 mm 14.5 mm MID-OLTI
Wurth Elektronik Power Transformers - Board Mount MID-UNIT STM Offline 1.60mH 6.20Ohm
Datasheet
556In Stock
Min.: 1
Mult.: 1

Power 85 VAC to 424 VAC 12 V 6 W 500 mA Through Hole Single Primary Winding Single Secondary Winding 13.72 mm 20.45 mm 10.8 mm MID-OLSTM


Wurth Elektronik Power Transformers - Board Mount MID-OLTI UCC28720 1.5 mH 5 W
Datasheet
878In Stock
176On Order
Min.: 1
Mult.: 1

Flyback Transformers 85 VAC to 265 VAC 5 V 5 W 1 A Through Hole Dual Primary Winding Single Secondary Winding 13.97 mm 13.97 mm 12.7 mm MID-OLTI