Audio Transformers / Signal Transformers

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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.

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Part #

Audio Transformers / Signal Transformers WE-LAN SMT Transfrmr 1000BT 1 Port ETR

749020011A
Wurth Elektronik
1: $6.92
861In Stock
4,400On Order

Mfr. Part No.
749020011A

Mouser Part No
710-749020011A

Wurth Elektronik

Audio Transformers / Signal Transformers WE-LAN SMT Transfrmr 1000BT 1 Port ETR

Learn More

Datasheet

861In Stock

4,400On Order

Cut Tape

$6.92

$6.32

$5.85

$5.49

Reel

$5.21

$4.99

MouseReel Available

Min.: 1
Mult.: 1

: 400

LAN Transformers

LAN

SMD/SMT

350 uH

1500 Vrms

- 40 C

+ 85 C

Single

17.5 mm

15.24 mm

6.5 mm

WE-LAN

Reel, Cut Tape, MouseReel

Audio Transformers / Signal Transformers WE-LAN Transformer 1000BT 1/2 Port ETR

749020100A
Wurth Elektronik
1: $6.56
4,299In Stock
11,944On Order

Mfr. Part No.
749020100A

Mouser Part No
710-749020100A

Wurth Elektronik

Audio Transformers / Signal Transformers WE-LAN Transformer 1000BT 1/2 Port ETR

Learn More

Datasheet

4,299In Stock

11,944On Order

Cut Tape

$6.56

$5.67

$5.01

$4.66

$4.16

Reel

$3.80

MouseReel Available

Min.: 1
Mult.: 1

: 1,200

LAN Transformers

LAN

SMD/SMT

350 uH

1500 Vrms

- 40 C

+ 105 C

Single

12.7 mm

9.5 mm

3 mm

WE-LAN

Reel, Cut Tape, MouseReel

Audio Transformers / Signal Transformers WE-LAN SMT Transfrmr 1000BT 1 Port

749020111A
Wurth Elektronik
1: $3.96
3,868In Stock
8,619On Order

Mfr. Part No.
749020111A

Mouser Part No
710-749020111A

Wurth Elektronik

Audio Transformers / Signal Transformers WE-LAN SMT Transfrmr 1000BT 1 Port

Learn More

Datasheet

3,868In Stock

8,619On Order

Cut Tape

$3.96

$3.72

$3.51

$3.42

Reel

$3.24

MouseReel Available

Min.: 1
Mult.: 1

: 1,500

LAN Transformers

LAN

SMD/SMT

350 uH

1500 Vrms

0 C

+ 70 C

Single

16.5 mm

9.7 mm

2.35 mm

WE-LAN

Reel, Cut Tape, MouseReel

Audio Transformers / Signal Transformers WE-LAN SMT TRANSFMR 1000BT 1Port PoE+ETR

749022011
Wurth Elektronik
1: $6.46
671In Stock
1,375On Order

Mfr. Part No.
749022011

Mouser Part No
710-749022011

Wurth Elektronik

Audio Transformers / Signal Transformers WE-LAN SMT TRANSFMR 1000BT 1Port PoE+ETR

Learn More

Datasheet

671In Stock

1,375On Order

Cut Tape

$6.46

$6.23

$5.88

$5.23

Reel

$4.96

MouseReel Available

Min.: 1
Mult.: 1

: 375

LAN Transformers

LAN

SMD/SMT

350 uH

1.5 kVAC

- 40 C

+ 85 C

Quad

18.3 mm

12.2 mm

6.35 mm

WE-LAN

Reel, Cut Tape, MouseReel

Audio Transformers / Signal Transformers WE-LAN 1KBaseT 4PPoE 350uH 1Port 1500Vrms

7490220115
Wurth Elektronik
1: $13.31
933In Stock
800Expected 02/10/2026

Mfr. Part No.
7490220115

Mouser Part No
710-7490220115

Wurth Elektronik

Audio Transformers / Signal Transformers WE-LAN 1KBaseT 4PPoE 350uH 1Port 1500Vrms

Learn More

Datasheet

933In Stock

800Expected 02/10/2026

Cut Tape

$13.31

$11.00

$9.48

Reel

$8.98

MouseReel Available

Min.: 1
Mult.: 1

: 400

LAN Transformers

LAN

SMD/SMT

350 uH

1.5 kV

- 40 C

+ 85 C

18.3 mm

12.2 mm

6.35 mm

WE-LAN

Reel, Cut Tape, MouseReel

Audio Transformers / Signal Transformers WE-LAN 10/100/1000 1Port ETR Base T SMD

7490220120
Wurth Elektronik
1: $5.94
2,048In Stock
1,600Expected 02/10/2026

Mfr. Part No.
7490220120

Mouser Part No
710-7490220120

Wurth Elektronik

Audio Transformers / Signal Transformers WE-LAN 10/100/1000 1Port ETR Base T SMD

Learn More

Datasheet

2,048In Stock

1,600Expected 02/10/2026

Cut Tape

$5.94

$5.73

$5.38

$5.07

Reel

$4.55

MouseReel Available

Min.: 1
Mult.: 1

: 400

LAN Transformers

LAN

SMD/SMT

1 MHz to 100 MHz

350 uH

1.5 kVAC

- 40 C

+ 105 C

Quad

18.29 mm

16 mm

6.15 mm

WE-LAN

Reel, Cut Tape, MouseReel

Audio Transformers / Signal Transformers WE-LAN 10/100/1000 1Port ETR Base T SMD

7490220121
Wurth Elektronik / Midcom
1: $6.47
865In Stock
1,280On Order

Mfr. Part No.
7490220121

Mouser Part No
710-7490220121

Wurth Elektronik / Midcom

Audio Transformers / Signal Transformers WE-LAN 10/100/1000 1Port ETR Base T SMD

Learn More

Datasheet

865In Stock

1,280On Order

Cut Tape

$6.47

$6.24

$5.86

$5.51

Reel

$4.91

MouseReel Available

Min.: 1
Mult.: 1

: 320

LAN Transformers

LAN

SMD/SMT

1 MHz to 100 MHz

350 uH

1.5 kVAC

- 40 C

+ 105 C

Quad

18.29 mm

16 mm

7.2 mm

WE-LAN

Reel, Cut Tape, MouseReel

Audio Transformers / Signal Transformers WE-LAN SMD Transfrmr 10/100/1000Base-T

7490220123
Wurth Elektronik
1: $6.47
1,187In Stock
1,740Expected 02/10/2026

Mfr. Part No.
7490220123

Mouser Part No
710-7490220123

Wurth Elektronik

Audio Transformers / Signal Transformers WE-LAN SMD Transfrmr 10/100/1000Base-T

Learn More

Datasheet

1,187In Stock

1,740Expected 02/10/2026

Cut Tape

$6.47

$6.24

$5.86

$5.51

Reel

$4.91

MouseReel Available

Min.: 1
Mult.: 1

: 290

LAN Transformers

LAN

SMD/SMT

1 MHz to 100 MHz

180 uH

1.5 kVAC

- 40 C

+ 105 C

Quad

18.29 mm

16 mm

8.8 mm

WE-LAN

Reel, Cut Tape, MouseReel

Audio Transformers / Signal Transformers WE-LAN 10/100/1000 Base-T SMT Transformer 1 Port 40pin pitch 1.27mm

7490240140
Wurth Elektronik
1: $11.95
218In Stock

Mfr. Part No.
7490240140

Mouser Part No
710-7490240140

Wurth Elektronik

Audio Transformers / Signal Transformers WE-LAN 10/100/1000 Base-T SMT Transformer 1 Port 40pin pitch 1.27mm

Learn More

Datasheet

218In Stock

Cut Tape

$11.95

$9.96

$9.06

$8.23

Reel

$7.77

MouseReel Available

Min.: 1
Mult.: 1

: 200

LAN Transformers

LAN Transformer

SMD/SMT

350 uH

4 kVAC

- 40 C

+ 85 C

28.32 mm

12.7 mm

WE-LAN

Reel, Cut Tape, MouseReel

Audio Transformers / Signal Transformers WE-LAN 10GBase-T SMD 1 Port 4PPoE Trnsfmr

749052050
Wurth Elektronik
1: $15.71
902In Stock
870Expected 06/11/2026

Mfr. Part No.
749052050

Mouser Part No
710-749052050

Wurth Elektronik

Audio Transformers / Signal Transformers WE-LAN 10GBase-T SMD 1 Port 4PPoE Trnsfmr

Learn More

Datasheet

902In Stock

870Expected 06/11/2026

Cut Tape

$15.71

$13.13

$11.37

$10.32

Reel

$9.80

MouseReel Available

Min.: 1
Mult.: 1

: 290

LAN Transformers

Module

SMD/SMT

100 kHz to 500 MHz

180 uH

1.5 kVAC

0 C

+ 70 C

Single

18.29 mm

16 mm

8.8 mm

WE-LAN 10G

Reel, Cut Tape, MouseReel

Audio Transformers / Signal Transformers WE-LAN 2.5G/5G Base-T SMT 1 Port 120uH OCL a. 27mA DC Bias ETR from -40C to +85C

749082010
Wurth Elektronik
1: $15.35
865In Stock

Mfr. Part No.
749082010

Mouser Part No
710-749082010

Wurth Elektronik

Audio Transformers / Signal Transformers WE-LAN 2.5G/5G Base-T SMT 1 Port 120uH OCL a. 27mA DC Bias ETR from -40C to +85C

Learn More

Datasheet

865In Stock

Cut Tape

$15.35

$14.09

$12.71

$11.54

Reel

$10.02

MouseReel Available

Min.: 1
Mult.: 1

: 290

LAN Transformers

LAN Transformer

SMD/SMT

350 uH

1.5 kV

- 40 C

+ 85 C

18.29 mm

16 mm

8.8 mm

WE-LAN

Reel, Cut Tape, MouseReel

Audio Transformers / Signal Transformers MID-PLC ST8500 1 mH -

750510730
Wurth Elektronik
1: $4.27
1,076In Stock
1,260Expected 24/12/2026

Mfr. Part No.
750510730

Mouser Part No
710-750510730

Wurth Elektronik

Audio Transformers / Signal Transformers MID-PLC ST8500 1 mH -

Learn More

Datasheet

1,076In Stock

1,260Expected 24/12/2026

Cut Tape

$4.27

$3.86

$3.71

$3.59

Reel

$2.91

View

MouseReel Available

Min.: 1
Mult.: 1

: 140

Signal Transformers

SMD/SMT

1 mH

1.5 kVAC

- 20 C

+ 80 C

Single

13.97 mm

15.4 mm

13.2 mm

MID-PLC

Reel, Cut Tape, MouseReel

Audio Transformers / Signal Transformers WE-LAN SMT Transfrmr 100BT 1 Port

749010012A
Wurth Elektronik
1: $3.92
1,308In Stock

Mfr. Part No.
749010012A

Mouser Part No
710-749010012A

Wurth Elektronik

Audio Transformers / Signal Transformers WE-LAN SMT Transfrmr 100BT 1 Port

Learn More

Datasheet

1,308In Stock

Cut Tape

$3.92

$3.55

$3.31

$3.06

Reel

$2.09

MouseReel Available

Min.: 1
Mult.: 1

: 600

LAN Transformers

LAN

SMD/SMT

350 uH

1500 Vrms

0 C

+ 70 C

Single

12.7 mm

9.1 mm

6.35 mm

WE-LAN

Reel, Cut Tape, MouseReel

Audio Transformers / Signal Transformers WE-LAN 10/100 Base-TX SMT Transformer 1Port 12pin pitch 2.54mm 4KVrms isolation

7490140141
Wurth Elektronik
1: $6.46
228In Stock
600Expected 11/12/2026

Mfr. Part No.
7490140141

Mouser Part No
710-7490140141

Wurth Elektronik

Audio Transformers / Signal Transformers WE-LAN 10/100 Base-TX SMT Transformer 1Port 12pin pitch 2.54mm 4KVrms isolation

Learn More

Datasheet

228In Stock

600Expected 11/12/2026

Cut Tape

$6.46

$6.23

$5.88

$5.54

Reel

$4.95

MouseReel Available

Min.: 1
Mult.: 1

: 300

LAN Transformers

LAN Transformer

SMD/SMT

350 uH

4 kVAC

- 40 C

+ 85 C

17.1 mm

14.5 mm

8.65 mm

WE-LAN

Reel, Cut Tape, MouseReel

Audio Transformers / Signal Transformers WE-LAN 1KBsT nonPoE 350uH 1Port 4kVrms

7490240120
Wurth Elektronik
1: $28.07
33In Stock
200Expected 18/01/2027

Mfr. Part No.
7490240120

Mouser Part No
710-7490240120

Wurth Elektronik

Audio Transformers / Signal Transformers WE-LAN 1KBsT nonPoE 350uH 1Port 4kVrms

Learn More

Datasheet

33In Stock

200Expected 18/01/2027

Cut Tape

$28.07

$23.39

$21.26

$19.32

Reel

$17.42

MouseReel Available

Min.: 1
Mult.: 1

: 200

High Voltager LAN Transformers

LAN

SMD/SMT

350 uH

4 kV

- 40 C

+ 105 C

28.57 mm

12.7 mm

15.49 mm

WE-LAN

Reel, Cut Tape, MouseReel

Audio Transformers / Signal Transformers WE-LAN 10GBase-T SMD 1 Port Transformer

749050010A
Wurth Elektronik
1: $8.08
25In Stock
800On Order

Mfr. Part No.
749050010A

Mouser Part No
710-749050010A

Wurth Elektronik

Audio Transformers / Signal Transformers WE-LAN 10GBase-T SMD 1 Port Transformer

Learn More

Datasheet

25In Stock

800On Order

Cut Tape

$8.08

$7.29

$6.99

$6.78

Reel

$5.81

View

MouseReel Available

Min.: 1
Mult.: 1

: 400

LAN Transformers

Module

SMD/SMT

200 uH

1.5 kVAC

0 C

+ 70 C

WE-LAN 10G

Reel, Cut Tape, MouseReel

Audio Transformers / Signal Transformers WE-LAN 10GBase-T SMD 1 Port ETR Trnsfmr

749050017
Wurth Elektronik
1: $13.13
145In Stock
450Expected 02/10/2026

Mfr. Part No.
749050017

Mouser Part No
710-749050017

Wurth Elektronik

Audio Transformers / Signal Transformers WE-LAN 10GBase-T SMD 1 Port ETR Trnsfmr

Learn More

Datasheet

145In Stock

450Expected 02/10/2026

Cut Tape

$13.13

$10.90

$9.47

$8.56

Reel

$8.13

MouseReel Available

Min.: 1
Mult.: 1

: 450

LAN Transformers

LAN

SMD/SMT

100 kHz to 500 MHz

120 uH

1.5 kVAC

- 40 C

+ 85 C

1 Channel

13.97 mm

15.11 mm

6.6 mm

WE-LAN 10G

Reel, Cut Tape, MouseReel

Audio Transformers / Signal Transformers WE-LAN 10GBase-T SMD 1 Port ETR Trnsfmr

749050018
Wurth Elektronik
1: $13.13
89In Stock
450Expected 02/10/2026

Mfr. Part No.
749050018

Mouser Part No
710-749050018

Wurth Elektronik

Audio Transformers / Signal Transformers WE-LAN 10GBase-T SMD 1 Port ETR Trnsfmr

Learn More

Datasheet

89In Stock

450Expected 02/10/2026

Cut Tape

$13.13

$10.90

$9.47

$8.56

Reel

$8.13

MouseReel Available

Min.: 1
Mult.: 1

: 450

LAN Transformers

Module

SMD/SMT

100 kHz to 500 MHz

120 uH

1.5 kVAC

- 40 C

+ 85 C

Single

13.97 mm

15.11 mm

6.6 mm

WE-LAN 10G

Reel, Cut Tape, MouseReel

Audio Transformers / Signal Transformers MID-PLC ST7540 1 mH -

750510682
Wurth Elektronik
1: $3.64
409In Stock

Mfr. Part No.
750510682

Mouser Part No
710-750510682

Wurth Elektronik

Audio Transformers / Signal Transformers MID-PLC ST7540 1 mH -

Learn More

Datasheet

409In Stock

Cut Tape

$3.64

$3.29

$3.16

$3.06

Reel

$2.92

View

MouseReel Available

Min.: 1
Mult.: 1

: 140

Signal Transformers

SMD/SMT

1 mH

1.5 kVAC

- 20 C

+ 80 C

Single

13.97 mm

15.4 mm

13.2 mm

MID-PLC

Reel, Cut Tape, MouseReel

Audio Transformers / Signal Transformers WE-LAN 1000Base-T 350uH 1Port 1500Vrms

749020023A
Wurth Elektronik
1: $5.97
57,694On Order

Mfr. Part No.
749020023A

Mouser Part No
710-749020023A

Wurth Elektronik

Audio Transformers / Signal Transformers WE-LAN 1000Base-T 350uH 1Port 1500Vrms

Learn More

Datasheet

57,694On Order

Cut Tape

$5.97

$4.94

$4.15

$3.78

Reel

$3.44

MouseReel Available

Min.: 1
Mult.: 1

: 800

LAN Transformers

LAN

SMD/SMT

350 uH

1.5 kV

- 40 C

+ 85 C

15.1 mm

7.1 mm

4.25 mm

WE-LAN

Reel, Cut Tape, MouseReel

Audio Transformers / Signal Transformers WE-LAN 1000Base-T 48P Pitch 1.02mm 1.5kVrms Non-PoE

749020020A
Wurth Elektronik
1: $6.11
600Expected 28/12/2026
New Product

Mfr. Part No.
749020020A

Mouser Part No
710-749020020A

New Product

Wurth Elektronik

Audio Transformers / Signal Transformers WE-LAN 1000Base-T 48P Pitch 1.02mm 1.5kVrms Non-PoE

Datasheet

600Expected 28/12/2026

Cut Tape

$6.11

$5.40

$4.93

$4.61

Reel

$3.91

$3.76

MouseReel Available

Min.: 1
Mult.: 1

: 300

Transformers

LAN Transformer

SMD/SMT

350 uH

- 40 C

+ 85 C

8 Channel

27.8 mm

12.2 mm

7.2 mm

WE-LAN

Reel, Cut Tape, MouseReel

Audio Transformers / Signal Transformers WE-LAN 1000Base-T 24P Pitch 1.27mm 1.5kVrms 4PPoE

7490220125
Wurth Elektronik
1: $6.11
600Expected 29/03/2027

Mfr. Part No.
7490220125

Mouser Part No
710-7490220125

Wurth Elektronik

Audio Transformers / Signal Transformers WE-LAN 1000Base-T 24P Pitch 1.27mm 1.5kVrms 4PPoE

Datasheet

600Expected 29/03/2027

Cut Tape

$6.11

$5.40

$4.93

$4.46

Reel

$3.91

MouseReel Available

Min.: 1
Mult.: 1

: 300

Transformers

LAN Transformer

SMD/SMT

180 uH

- 40 C

+ 105 C

4 Channel

18.15 mm

13 mm

8.8 mm

WE-LAN

Reel, Cut Tape, MouseReel

Audio Transformers / Signal Transformers WE-LAN Trans 1 Port 1000BT 1 Port

749023010A
Wurth Elektronik
1: $6.92
800Expected 02/10/2026

Mfr. Part No.
749023010A

Mouser Part No
710-749023010A

Wurth Elektronik

Audio Transformers / Signal Transformers WE-LAN Trans 1 Port 1000BT 1 Port

Learn More

Datasheet

800Expected 02/10/2026

Cut Tape

$6.92

$6.33

$5.85

$5.50

Reel

$5.21

$4.99

MouseReel Available

Min.: 1
Mult.: 1

: 400

LAN Transformers

LAN

SMD/SMT

350 uH

1500 Vrms

0 C

+ 70 C

Single

17.5 mm

15.6 mm

5.4 mm

WE-LAN

Reel, Cut Tape, MouseReel

Audio Transformers / Signal Transformers WE-LAN 10/100/1000 Base-T SMT Transformer 1 Port 1000BASE-T 24pin pitch 1.27mm

7490240142
Wurth Elektronik
1: $11.95
1,200On Order

Mfr. Part No.
7490240142

Mouser Part No
710-7490240142

Wurth Elektronik

Audio Transformers / Signal Transformers WE-LAN 10/100/1000 Base-T SMT Transformer 1 Port 1000BASE-T 24pin pitch 1.27mm

Learn More

Datasheet

1,200On Order

Cut Tape

$11.95

$9.96

$9.06

$8.23

Reel

$7.10

MouseReel Available

Min.: 1
Mult.: 1

: 240

LAN Transformers

LAN Transformer

SMD/SMT

350 uH

4 kVAC

- 40 C

+ 85 C

18.25 mm

15.24 mm

10.02 mm

WE-LAN

Reel, Cut Tape, MouseReel

Audio Transformers / Signal Transformers WE-LAN HDBase-T 24P Pitch 0.99mm 1.5kVrms Non-PoE

749063010
Wurth Elektronik
1: $8.37
1,000Expected 15/02/2027

Mfr. Part No.
749063010

Mouser Part No
710-749063010

Wurth Elektronik

Audio Transformers / Signal Transformers WE-LAN HDBase-T 24P Pitch 0.99mm 1.5kVrms Non-PoE

Datasheet

1,000Expected 15/02/2027

Cut Tape

$8.37

$7.40

$6.76

$6.32

Reel

$5.36

$5.15

MouseReel Available

Min.: 1
Mult.: 1

: 500

Transformers

LAN Transformer

SMD/SMT

200 uH

- 40 C

+ 85 C

4 Channel

13.72 mm

12 mm

6.6 mm

WE-LAN

Reel, Cut Tape, MouseReel

Transformers

Customer Service Office

Company

Resources

Support

4.39 mm
7.87 mm
9.78 mm
12.7 mm
12.95 mm
13.6 mm
13.72 mm
13.97 mm
15.1 mm
15.8 mm
16.5 mm
17.1 mm
17.5 mm
17.6 mm
17.73 mm
17.85 mm
18.01 mm
18.15 mm
18.25 mm
18.29 mm

7.1 mm
7.11 mm
7.5 mm
8.38 mm
8.8 mm
9.02 mm
9.1 mm
9.14 mm
9.4 mm
9.5 mm
9.52 mm
9.55 mm
9.6 mm
9.7 mm
12 mm
12.2 mm
12.7 mm
13 mm
13.5 mm
13.72 mm

1.98 mm
2.35 mm
2.38 mm
2.4 mm
3 mm
4.25 mm
5.33 mm
5.4 mm
5.6 mm
5.7 mm
6.15 mm
6.25 mm
6.35 mm
6.5 mm
6.6 mm
6.73 mm
7.2 mm
7.24 mm
8.4 mm
8.5 mm