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 (CHF) 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 WE-UNIT 4.6W SMD Offline Trnsfmr
Datasheet
164In Stock
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
Wurth Elektronik Power Transformers - Board Mount MID-ALIT Lightg Apps 2.60mH 1.6Ohm
Datasheet
4In Stock
Min.: 1
Mult.: 1

Power 195 VAC to 265 VAC 24 V 48 W 2 A Through Hole Dual Primary Winding Dual Secondary Winding 31.5 mm 35.2 mm 24 mm MID-OLIFX
Wurth Elektronik Power Transformers - Board Mount WE-UNIT Offline 220uH .21A .29Ohm
Datasheet
296On Order
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
Wurth Elektronik Power Transformers - Board Mount WE-UNIT Offline 180uH .2A .05Ohm
Datasheet
359Expected 9/11/2026
Min.: 1
Mult.: 1

Power 85 VAC to 265 VAC 5 V 3 W 600 mA Through Hole Single Primary Winding Single Secondary Winding 21.5 mm 15 mm 12 mm WE-UNIT
Wurth Elektronik Power Transformers - Board Mount MID-UNIT NXP Offline 2.38mH 1Ohm
Datasheet
Product Comments
2’100On Order
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-UOST Univ Offline 1250uH 0.8A 3000mOhm
Datasheet
573On Order
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 MID-OLTI UCC28910 1.1 mH 6 W
Datasheet
223Expected 9/17/2026
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
Wurth Elektronik Power Transformers - Board Mount MID-OLEFD 125-375V 68-100kHz
Datasheet
67Expected 9/10/2026
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
Wurth Elektronik Power Transformers - Board Mount WE-LLCR Size ETD34 600uH 150W 24V
Datasheet
33Expected 9/25/2026
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
Wurth Elektronik Power Transformers - Board Mount WE-LLCR Size ETD39 500uH 200W 24V
Datasheet
30Expected 9/4/2026
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
Wurth Elektronik Power Transformers - Board Mount WE-LLCR FAN7688Size ETD44 4 75uH 250W 12V
Datasheet
15On Order
Min.: 1
Mult.: 1

Power 255 VAC to 283 VAC 12 V 250 W 20.8 A Through Hole Single Primary Winding Dual Secondary Winding 48 mm 46 mm 27.5 mm WE-LLCR
Wurth Elektronik Power Transformers - Board Mount WE-LLCR Size ETD44 400uH 250W 48V
Datasheet
15Expected 9/4/2026
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
Wurth Elektronik Power Transformers - Board Mount WE-UNIT Offline 172uH .21A 1.2Ohm
Datasheet
Non-Stocked Lead-Time 19 Weeks
Min.: 180
Mult.: 180

Power 85 VAC to 265 VAC 24 V 3 W 125 mA Through Hole Single Primary Winding Single Secondary Winding 21.5 mm 15 mm 12 mm WE-UNIT
Wurth Elektronik Power Transformers - Board Mount WE-UNIT Offline 145uH .85A 26Ohm
Datasheet
Non-Stocked Lead-Time 19 Weeks
Min.: 154
Mult.: 154

Power 85 VAC to 265 VAC 12 V 8.4 W 250 mA Through Hole Single Primary Winding Dual Secondary Winding 18 mm 16.5 mm 18 mm WE-UNIT
Wurth Elektronik Power Transformers - Board Mount WE-UNIT Offline 145uH 4.5A 210Ohm
Datasheet
Non-Stocked Lead-Time 19 Weeks
Min.: 1
Mult.: 1

Power 85 VAC to 265 VAC 24 V 9.6 W 125 mA Through Hole Single Primary Winding Single Secondary Winding 18 mm 16.5 mm 18 mm WE-UNIT
Wurth Elektronik Power Transformers - Board Mount WE-UNIT Offline 100uH .8A 94Ohm
Datasheet
Non-Stocked Lead-Time 19 Weeks
Min.: 1
Mult.: 1

Power 85 VAC to 265 VAC 24 V 9.6 W 125 mA Through Hole Single Primary Winding Single Secondary Winding 24.5 mm 20.2 mm 16.5 mm WE-UNIT
Wurth Elektronik Power Transformers - Board Mount WE-UNIT Offline 120uH .8A 155Ohm
Datasheet
Lead-Time 19 Weeks
Min.: 1
Mult.: 1

Power 85 VAC to 265 VAC 5 V 10 W 600 mA Through Hole Single Primary Winding Dual Secondary Winding 24.5 mm 20.2 mm 16.5 mm WE-UNIT
Wurth Elektronik Power Transformers - Board Mount MID-UNIT STM Offline 1.2mH 2Ohm
Datasheet
Non-Stocked Lead-Time 20 Weeks
Min.: 1’000
Mult.: 50

Power 85 VAC to 265 VAC 12 V 6 W 500 mA Through Hole Single Primary Winding Single Secondary Winding 20.83 mm 22.35 mm 17.53 mm MID-OLSTM
Wurth Elektronik Power Transformers - Board Mount MID-OLPI 120-375V 12V 12W
Datasheet
Non-Stocked Lead-Time 18 Weeks
Min.: 1’050
Mult.: 70

Power 85 VAC to 265 VAC 12 V 12 W 1 A Through Hole Triple Primary Winding Single Secondary Winding 21 mm 25 mm 16 mm MID-OLPI
Wurth Elektronik Power Transformers - Board Mount MID-OLON NCL30000 870 uH 6.3 W
Datasheet
Non-Stocked Lead-Time 18 Weeks
Min.: 1’000
Mult.: 50

Power 90 VAC to 135 VAC 18 V 6.3 W 350 mA Through Hole Dual Primary Winding Dual Secondary Winding 21.59 mm 21.08 mm 11.68 mm MID-OLON
Wurth Elektronik Power Transformers - Board Mount MID-OLON NCL30001 625 uH 75 W
Datasheet
Non-Stocked Lead-Time 26 Weeks
Min.: 1’000
Mult.: 20

Flyback Transformers 85 VAC to 265 VAC 50 V 75 W 1.5 A Through Hole Dual Primary Winding Single Secondary Winding 35.56 mm 37.34 mm 34.29 mm MID-OLON
Wurth Elektronik Power Transformers - Board Mount MID-OLON NCL30001 600 uH 89.6 W
Datasheet
Non-Stocked Lead-Time 18 Weeks
Min.: 1’000
Mult.: 25

Flyback Transformers 85 VAC to 265 VAC 28 V 89.6 W 3.2 A Through Hole Dual Primary Winding Dual Secondary Winding 35.56 mm 37.34 mm 34.29 mm MID-OLON
Wurth Elektronik Power Transformers - Board Mount MID-OLON NCL30000 1.72 mH 35 W
Datasheet
Non-Stocked Lead-Time 14 Weeks
Min.: 1’029
Mult.: 49

Power 90 VAC to 305 VAC 25 V, 50 V 35 W 350 mA, 700 mA Through Hole Dual Primary Winding Dual Secondary Winding 26.92 mm 26.67 mm 14.61 mm MID-OLON
Wurth Elektronik Power Transformers - Board Mount MID-OLNXP 85-265V 100kHz
Datasheet
Non-Stocked Lead-Time 20 Weeks
Min.: 1’000
Mult.: 100

Power 85 VAC to 265 VAC 40 V 20 W 500 mA Through Hole Dual Primary Winding Dual Secondary Winding 14.73 mm 14.73 mm 15.24 mm MID-OLNXP
Wurth Elektronik Power Transformers - Board Mount MID-OLTI LM3445 803.5 uH 10 W
Datasheet
Non-Stocked Lead-Time 20 Weeks
Min.: 1’000
Mult.: 50

Flyback Transformers 90 VAC to 140 VAC 25 V 10 W 400 mA Through Hole Dual Primary Winding Dual Secondary Winding 20.32 mm 24.38 mm 16 mm MID-OLTI