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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Primary Voltage Rating
Secondary Voltage Rating
Power Rating
Secondary Current Rating
Mounting Style
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Secondary Winding
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Width
Height
Series
Wurth Elektronik Power Transformers - Board Mount MID-OLON NCP1251 750 uH 21.6 W
Datasheet
559In 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
875In 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-OLLT LT3798 600 uH 14 W
Datasheet
298In Stock
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
Wurth Elektronik Power Transformers - Board Mount MID-OLLT LT3798 300 uH 48 W
Datasheet
2,618In Stock
Min.: 1
Mult.: 1

Power 85 VAC to 265 VAC 24 V 48 W 2 A Through Hole Dual Primary Winding Dual Secondary Winding 31 mm 31 mm 25 mm MID-OLLT
Wurth Elektronik Power Transformers - Board Mount MID-OLTI UCC28740 160 uH 92.4 W
Datasheet
561In 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 WE-UNIT 5.6W SMD Offline Trnsfmr
Datasheet
895In 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 MID-SLIM Offline 250uH 50kHz 34mOhm
Datasheet
1,359In 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 WE-LLCR Size ETD34 600uH 150W 48V
Datasheet
20In 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
50In 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 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 WE-UNIT Offline 280uH .2A .05Ohm
Datasheet
173In 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 WE-UOST Univ Offline 1310uH 0.8A 3000mOhm
Datasheet
256In 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 WE-FB SMD Flyback Dialog Semi iW1830
Datasheet
1,001In 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
181In 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-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 WE-UOST Univ Offline 1250uH 0.8A 3000mOhm
Datasheet
179In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 150

Power 85 VAC to 265 VAC 24 V 6.7 W 280 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-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-OLLT LT3798 180 uH 108 W
Datasheet
155In Stock
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 MID-OLTI TPS23758 150uH 5V 2.4A Flyback 250kHz 12W
Datasheet
774In Stock
1,000Expected 2026/08/20
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
1,052In 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-OLPI UCC28700 1.67 mH 6 W
Datasheet
821In Stock
Min.: 1
Mult.: 1

Power 85 VAC to 265 VAC 5 V 6 W 1.2 A Through Hole Single Primary Winding Single Secondary Winding 16.9 mm 18.8 mm 13 mm MID-OLPI
Wurth Elektronik Power Transformers - Board Mount WE-UNIT 4W SMD Offline Trnsfmr
Datasheet
498In Stock
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
Wurth Elektronik Power Transformers - Board Mount MID-UNIT NXP Offline 2.38mH 1Ohm
Datasheet
Product Comments
1,141In Stock
Min.: 1
Mult.: 1

Power 85 VAC to 272 VAC 12 V 7.2 W 600 mA Through Hole Single Primary Winding Dual Secondary Winding 20 mm 24.38 mm 16 mm MID-OLSTM
Wurth Elektronik Power Transformers - Board Mount WE-UNIT Offline 220uH .21A .29Ohm
Datasheet
152In Stock
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