Transformers

Würth Elektronik Transformers feature power transformers for AC/DC, DC/DC, data/signal, battery management systems (BMS), and interfaces. Additional transformer solutions are gate drive and current sense transformers. These Würth power transformers feature several topologies, including flyback, push-pull, isolated buck, forward, and half-bridge. Würth Elektronik transformers are ideal for power electronics, LED lighting, signal applications, white goods, and more.

Results: 533
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Description Datasheet Availability Pricing (EUR) 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 WE-FB LT3748 1.5 mH 9 W
Datasheet
70Expected 12/03/2026
Min.: 1
Mult.: 1

Flyback Transformers 85 V to 265 V 30 V 9 W 300 mA Through Hole Dual Primary Winding Single Secondary Winding 20.32 mm 24.38 mm 16 mm WE-FB
Wurth Elektronik Power Transformers MID-OLTI UCC28910 EFD25 36W THT
Datasheet
84Expected 27/02/2026
Min.: 1
Mult.: 1

MID-OLTI
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-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 WE-PoE Size ER11/5 400uH 30mohm
Datasheet
Non-Stocked
Min.: 500
Mult.: 500
Reel: 500

POE - Power Over Ethernet Transformers 36 V to 57 V 3.3 V 4 W 400 mA SMD/SMT Single Primary Winding Triple Secondary Winding 12.9 mm 13 mm 6.2 mm WE-PoE
Wurth Elektronik Power Transformers WE-PoE Size ER14.5/6 21uH 640mohm
Datasheet
Non-Stocked
Min.: 400
Mult.: 400
Reel: 400

POE - Power Over Ethernet Transformers 36 V to 57 V 1.8 V 7 W 1.3 A SMD/SMT Single Primary Winding Triple Secondary Winding 16.3 mm 16.8 mm 7.4 mm WE-PoE
Wurth Elektronik Power Transformers WE-PoE Size ER14.5/6 210uH 210mohm
Datasheet
Non-Stocked
Min.: 400
Mult.: 400
Reel: 400

POE - Power Over Ethernet Transformers 36 V to 57 V 5 V 7 W 470 mA SMD/SMT Single Primary Winding Triple Secondary Winding 16.3 mm 16.8 mm 7.4 mm WE-PoE
Wurth Elektronik Power Transformers WE-PoE Size ER14.5/6 210uH 360mOhm
Datasheet
Non-Stocked
MouseReel Available
Min.: 1
Mult.: 1
Reel: 400

POE - Power Over Ethernet Transformers 36 V to 57 V 12 V 7 W 580 mA SMD/SMT Single Primary Winding Triple Secondary Winding 16.3 mm 16.8 mm 7.4 mm WE-PoE
Wurth Elektronik Power Transformers WE-PoE Power over Ethernet Transformer
Datasheet
Non-Stocked
Min.: 1
Mult.: 1
Reel: 300

POE - Power Over Ethernet Transformers WE-PoE
Wurth Elektronik Power Transformers WE-PoE+ Size EFD20 42uH 0.099ohm
Datasheet
Non-Stocked
MouseReel Available
Min.: 1
Mult.: 1
Reel: 125

POE - Power Over Ethernet Transformers 36 V to 72 V 3.3 V 30 W 9 A SMD/SMT Single Primary Winding Single Secondary Winding 23.11 mm 29.08 mm 11.43 mm WE-PoE+
Wurth Elektronik Power Transformers WE-PoE+ Size EFD20 65.1uH 0.23ohm
Datasheet
Non-Stocked
MouseReel Available
Min.: 1
Mult.: 1
Reel: 125

POE - Power Over Ethernet Transformers 36 V to 72 V 5 V 30 W 65 mA SMD/SMT Single Primary Winding Single Secondary Winding 23.11 mm 29.08 mm 11.43 mm WE-PoE+
Wurth Elektronik Power Transformers WE-PoE+ Size EFD20 42uH 0.084ohm
Datasheet
Non-Stocked
MouseReel Available
Min.: 1
Mult.: 1
Reel: 125

POE - Power Over Ethernet Transformers 36 V to 72 V 5 V 30 W 5 A SMD/SMT Single Primary Winding Single Secondary Winding 23.11 mm 29.08 mm 11.43 mm WE-PoE+
Wurth Elektronik Power Transformers WE-PoEH High Power EPQ13 54uH 23.1W
Datasheet
Non-Stocked
Min.: 1
Mult.: 1
Reel: 150

POE - Power Over Ethernet Transformers 33 V to 57 V 3.3 V 23.1 W 3.5 A SMD/SMT Single Primary Winding Dual Secondary Winding 14 mm 17.65 mm 14.5 mm WE-PoEH
Wurth Elektronik Power Transformers WE-PoEH High Power EPQ13 128uH 38.4W
Datasheet
N/A
Min.: 1
Mult.: 1
Reel: 150

POE - Power Over Ethernet Transformers 9 V to 57 V 12 V 38.4 W 1.6 A SMD/SMT Single Primary Winding Dual Secondary Winding 14 mm 17.65 mm 14.5 mm WE-PoEH
Wurth Elektronik Power Transformers WE-PoEH High Power EPQ13 128uH 36.3W
Datasheet
Non-Stocked
Min.: 1
Mult.: 1
Reel: 150

POE - Power Over Ethernet Transformers 9 V to 57 V 3.3 V 36.3 W 5.5 A SMD/SMT Single Primary Winding Dual Secondary Winding 14 mm 17.65 mm 14.5 mm WE-PoEH
Wurth Elektronik Power Transformers WE-PoE Size ER13 40uH 0.11ohm
Datasheet
Non-Stocked Lead-Time 18 Weeks
MouseReel Available
Min.: 1
Mult.: 1
Reel: 200

POE - Power Over Ethernet Transformers 36 V to 57 V 12 V 13 W 1.25 A SMD/SMT Single Primary Winding Single Secondary Winding 13.46 mm 17.75 mm 12.7 mm WE-PoE
Wurth Elektronik Power Transformers WE-PoE Size ER13 127uH 440mOhm
Datasheet
Non-Stocked
MouseReel Available
Min.: 1
Mult.: 1
Reel: 200

POE - Power Over Ethernet Transformers 36 V to 57 V 3.3 V 13 W 2 A SMD/SMT Single Primary Winding Dual Secondary Winding 13.46 mm 17.75 mm 12.7 mm WE-PoE
Wurth Elektronik Power Transformers WE-PoE Size ER13 127uH 440mOhm
Datasheet
Non-Stocked
MouseReel Available
Min.: 1
Mult.: 1
Reel: 200

POE - Power Over Ethernet Transformers 36 V to 57 V 5 V 13 W 1.3 A SMD/SMT Single Primary Winding Dual Secondary Winding 13.46 mm 17.75 mm 12.7 mm WE-PoE
Wurth Elektronik Power Transformers WE-FLEX Trnsfmr HV 14.7uH .55A
Datasheet
Non-Stocked
Min.: 500
Mult.: 500
Reel: 500

Signal Transformers SMD/SMT Triple Primary Winding Triple Secondary Winding 12.9 mm 13 mm 6.2 mm WE-FLEX HV
Wurth Elektronik Power Transformers WE-FLEX Trnsfmr HV 10.9uH .8A
Datasheet
Non-Stocked
Min.: 500
Mult.: 500
Reel: 500

Signal Transformers SMD/SMT Triple Primary Winding Triple Secondary Winding 12.9 mm 13 mm 6.2 mm WE-FLEX HV