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 (USD) 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
Length
Width
Height
Series
Wurth Elektronik Power Transformers MID-OLEE 78-375V 50000kHz
Datasheet
98In Stock
Min.: 1
Mult.: 1

Power 55 VAC to 265 VAC 15 V 4.8 W 320 mA Through Hole Dual Primary Winding Single Secondary Winding 14.2 mm 20.45 mm 14.6 mm MID-OLEE
Wurth Elektronik Power Transformers MID-OLTI UCC28711 450 uH
Datasheet
29In Stock
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
Wurth Elektronik Power Transformers MID-OLSTM Viper114LS 1.2 mH
Datasheet
117In Stock
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
Wurth Elektronik Power Transformers MID-OLEE LT8315 2.25 mH 4.1 W
Datasheet
108In Stock
Min.: 1
Mult.: 1

Power 55 VAC to 265 VAC 24 V 4.1 W 170 mA Through Hole Dual Primary Winding Single Secondary Winding 14.2 mm 20.45 mm 14.6 mm MID-OLEE
Wurth Elektronik Power Transformers MID-OLEFD EFD20 SMD .8uH 1.4A 40V
Datasheet
63In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 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
Wurth Elektronik Power Transformers MID-OLLT LT3798 461 uH 45 W
Datasheet
45In Stock
Min.: 1
Mult.: 1

Flyback Transformers 85 VAC to 265 VAC 125 V 45 W 360 mA Through Hole Dual Primary Winding Dual Secondary Winding 31 mm 31 mm 25 mm MID-OLLT
Wurth Elektronik Power Transformers MID-OLEFD EFD20 TH .8uH 1.4A 12V
Datasheet
43In Stock
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
Wurth Elektronik Power Transformers MID-ALIT Lightg Apps 2.60mH 1.6Ohm
Datasheet
10In 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 MID-OLEFD EFD20 TH .8uH 1.4A 24V
Datasheet
1,008Expected 2026/04/09
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 MID-OLTI LM5023 400 uH 65.2 W
Datasheet
200Expected 2026/03/19
MouseReel Available
Min.: 1
Mult.: 1
Reel: 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 MID-OLEFD EFD20 SMD .8uH 1.4A 24V
Datasheet
240Expected 2026/03/03
MouseReel Available
Min.: 1
Mult.: 1
Reel: 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
Wurth Elektronik Power Transformers MID-UNIT STM Offline 4mH 1.60Ohm
Datasheet
Non-Stocked Lead-Time 9 Weeks
Min.: 1
Mult.: 1

Power 85 VAC to 265 VAC 5 V 5 W 1 A Through Hole Single Primary Winding Dual Secondary Winding 20 mm 24 mm 16 mm MID-OLSTM
Wurth Elektronik Power Transformers WE-UOST Univ Offline 1250uH 0.8A 190mOhm
Datasheet
Non-Stocked Lead-Time 3 Weeks
MouseReel Available
Min.: 1
Mult.: 1
Reel: 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 WE-LLCR Size ETD44 400uH 250W 48V
Datasheet
Non-Stocked Lead-Time 3 Weeks
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 WE-UNIT Offline 172uH .21A 1.2Ohm
Datasheet
Non-Stocked
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 WE-UNIT Offline 145uH .85A 26Ohm
Datasheet
Non-Stocked Lead-Time 21 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 WE-UNIT Offline 145uH 4.5A 210Ohm
Datasheet
Non-Stocked
Min.: 154
Mult.: 154

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 WE-UNIT Offline 100uH .8A 94Ohm
Datasheet
Non-Stocked
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 WE-UNIT Offline 120uH .8A 155Ohm
Datasheet
N/A
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 MID-UNIT STM Offline 1.2mH 2Ohm
Datasheet
Non-Stocked
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 MID-OLPI 120-375V 12V 12W
Datasheet
Non-Stocked
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 MID-OLON NCL30000 870 uH 6.3 W
Datasheet
Non-Stocked
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 MID-OLON NCL30001 625 uH 75 W
Datasheet
Non-Stocked
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 MID-OLON NCL30001 600 uH 89.6 W
Datasheet
Non-Stocked
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 MID-OLON NCL30000 1.72 mH 35 W
Datasheet
Non-Stocked
Min.: 1,029
Mult.: 49

Power 90 VAC to 305 VAC 50 V, 25 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