Audio Transformers / Signal Transformers

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Ethernet Solutions

Würth Elektronik offers multiple Ethernet solutions, including LAN transformers and modular jack connectors. The WE-LAN transformer series is designed with at least one transformer and one common mode choke in each channel. The LAN transformer portfolio consists of the WE-LAN series with Power over Ethernet (PoE) up to 150W and speeds up to 1Gbit/s, the WE-LAN 10G series with 10G Base-T and PoE(+) over four pairs up to 150W, and the WE-LAN AQ series, which is manufactured by a fully automated process with Ethernet speeds up to 1Gbit/s.

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Part #

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

749020100A
Wurth Elektronik
1: $8.91
5,097In Stock
12,000On 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

5,097In Stock

12,000On Order

Cut Tape

$8.91

$7.71

$6.81

$6.34

$5.66

Reel

$5.44

MouseReel Available

Min.: 1
Mult.: 1

: 1,200

LAN Transformers

LAN

SMD/SMT

350 uH

1500 Vrms

- 40 C

+ 105 C

Single

LAN

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: $5.37
3,921In Stock
10,500On 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

3,921In Stock

10,500On Order

Cut Tape

$5.37

$5.06

$4.77

$4.58

Reel

$4.41

MouseReel Available

Min.: 1
Mult.: 1

: 1,500

LAN Transformers

LAN

SMD/SMT

350 uH

1500 Vrms

0 C

+ 70 C

Single

LAN

16.5 mm

9.7 mm

2.35 mm

WE-LAN

Reel, Cut Tape, MouseReel

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

749020310
Wurth Elektronik
1: $10.23
2,186In Stock
5,600On Order

Mfr. Part No.
749020310

Mouser Part No
710-749020310

Wurth Elektronik

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

Learn More

Datasheet

2,186In Stock

5,600On Order

Cut Tape

$10.23

$10.21

$9.52

$8.35

Reel

$6.79

View

MouseReel Available

Min.: 1
Mult.: 1

: 400

LAN Transformers

LAN

SMD/SMT

500 kHz to 100 MHz

350 uH

1.501 kVAC

- 40 C

+ 85 C

Single

10/100/1000 Base-T

17.53 mm x 14.6 mm x 4.5 mm

17.53 mm

16.51 mm

4.5 mm

WE-LANAQ

Reel, Cut Tape, MouseReel

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

749022011
Wurth Elektronik
1: $8.79
761In Stock
1,500Expected 2/10/2026

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

761In Stock

1,500Expected 2/10/2026

Cut Tape

$8.79

$8.47

$8.00

$7.53

$7.06

Reel

$6.83

MouseReel Available

Min.: 1
Mult.: 1

: 375

LAN Transformers

LAN

SMD/SMT

350 uH

1.5 kVAC

- 40 C

+ 85 C

Quad

LAN

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: $18.09
613In Stock
800Expected 7/8/2026

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

613In Stock

800Expected 7/8/2026

Cut Tape

$18.09

$14.96

$12.57

$12.05

Reel

$12.05

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: $8.08
667In Stock
2,000On Order

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

667In Stock

2,000On Order

Cut Tape

$8.08

$7.79

$7.32

$6.90

Reel

$6.46

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

10/100/1000 Base-T

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: $8.79
1,138In Stock
1,280Expected 23/10/2026

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

1,138In Stock

1,280Expected 23/10/2026

Cut Tape

$8.79

$8.49

$7.97

$7.49

Reel

$7.03

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

10/100/1000 Base-T

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: $8.79
2,023In Stock
1,740Expected 4/9/2026

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

2,023In Stock

1,740Expected 4/9/2026

Cut Tape

$8.79

$8.49

$7.97

$7.49

Reel

$7.03

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

10/100/1000 Base-T

18.29 mm

16 mm

8.8 mm

WE-LAN

Reel, Cut Tape, MouseReel

Audio Transformers / Signal Transformers WE-LAN AQ 1KBaseT 4PPoE 150uH 1500Vrms

749022310
Wurth Elektronik
1: $7.18
877In Stock
800Expected 7/8/2026

Mfr. Part No.
749022310

Mouser Part No
710-749022310

Wurth Elektronik

Audio Transformers / Signal Transformers WE-LAN AQ 1KBaseT 4PPoE 150uH 1500Vrms

Learn More

Datasheet

877In Stock

800Expected 7/8/2026

Cut Tape

$7.18

$6.61

$5.88

$5.40

$4.90

Reel

$4.41

MouseReel Available

Min.: 1
Mult.: 1

: 800

LAN Transformers

LAN

SMD/SMT

150 uH

1.5 kV

- 40 C

+ 85 C

16.5 mm

10.3 mm

4.1 mm

WE-LANAQ

Reel, Cut Tape, MouseReel

Audio Transformers / Signal Transformers WE-LAN AQ 1KBaseT 4PPoE 180uH 1500Vrms

749023310
Wurth Elektronik
1: $7.18
752In Stock
800Expected 28/8/2026

Mfr. Part No.
749023310

Mouser Part No
710-749023310

Wurth Elektronik

Audio Transformers / Signal Transformers WE-LAN AQ 1KBaseT 4PPoE 180uH 1500Vrms

Learn More

Datasheet

752In Stock

800Expected 28/8/2026

Cut Tape

$7.18

$6.61

$5.88

$5.40

$4.90

Reel

$4.41

MouseReel Available

Min.: 1
Mult.: 1

: 800

LAN Transformers

LAN

SMD/SMT

180 uH

1.5 kV

- 40 C

+ 85 C

16.5 mm

10.3 mm

4.1 mm

WE-LANAQ

Reel, Cut Tape, MouseReel

Audio Transformers / Signal Transformers WE-LAN 1KBsT nonPoE 350uH 1Port 1500Vrms

749024015C
Wurth Elektronik
1: $16.08
363In Stock

Mfr. Part No.
749024015C

Mouser Part No
710-749024015C

Wurth Elektronik

Audio Transformers / Signal Transformers WE-LAN 1KBsT nonPoE 350uH 1Port 1500Vrms

Learn More

Datasheet

363In Stock

Cut Tape

$16.08

$16.05

$16.03

$16.02

Reel

$14.44

View

MouseReel Available

Min.: 1
Mult.: 1

: 400

LAN Transformers

LAN

SMD/SMT

350 uH

1.5 kV

- 40 C

+ 105 C

17.6 mm

14.65 mm

8.8 mm

WE-LAN

Reel, Cut Tape, MouseReel

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

749050018
Wurth Elektronik
1: $17.87
311In Stock

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

311In Stock

Cut Tape

$17.87

$14.84

$12.89

$11.64

Reel

$11.64

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

LAN

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 4PPoE Trnsfmr

749052050
Wurth Elektronik
1: $21.35
428In Stock
1,450On Order

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

428In Stock

1,450On Order

Cut Tape

$21.35

$17.86

$17.84

$15.46

Reel

$12.62

View

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

LAN

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: $20.86
365In 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

365In Stock

Cut Tape

$20.86

$19.16

$17.29

$15.69

Reel

$14.35

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 WE-LAN SMT Transfrmr 100BT 1 Port

749010012A
Wurth Elektronik
1: $5.33
803In Stock
600Expected 7/8/2026

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

803In Stock

600Expected 7/8/2026

Cut Tape

$5.33

$4.83

$4.50

$4.16

Reel

$2.99

MouseReel Available

Min.: 1
Mult.: 1

: 600

LAN Transformers

LAN

SMD/SMT

350 uH

1500 Vrms

0 C

+ 70 C

Single

LAN

12.7 mm

9.1 mm

6.35 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: $16.25
24In Stock
200On Order

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

24In Stock

200On Order

Cut Tape

$16.25

$13.55

$12.32

$11.19

Reel

$10.42

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 10/100/1000 Base-T SMT Transformer 1 Port 1000BASE-T 24pin pitch 1.27mm

7490240142
Wurth Elektronik
1: $16.25
164In Stock
960On 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

164In Stock

960On Order

Cut Tape

$16.25

$13.55

$12.32

$11.19

Reel

$10.17

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 10GBase-T SMD 1 Port Transformer

749050010A
Wurth Elektronik
1: $10.38
203In Stock
400Expected 28/8/2026

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

203In Stock

400Expected 28/8/2026

Cut Tape

$10.38

$9.34

$8.96

$8.69

Reel

$7.92

View

MouseReel Available

Min.: 1
Mult.: 1

: 400

LAN Transformers

Module

SMD/SMT

200 uH

1.5 kVAC

0 C

+ 70 C

LAN

WE-LAN 10G

Reel, Cut Tape, MouseReel

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

749020023A
Wurth Elektronik
1: $8.12
57,522Expected 27/10/2026

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

57,522Expected 27/10/2026

Cut Tape

$8.12

$6.70

$5.63

$5.13

Reel

$4.66

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 AQ 10/100BasT 4PPoE 180uH 1500Vrms

749013310
Wurth Elektronik
1: $6.79
1,600Expected 31/7/2026

Mfr. Part No.
749013310

Mouser Part No
710-749013310

Wurth Elektronik

Audio Transformers / Signal Transformers WE-LAN AQ 10/100BasT 4PPoE 180uH 1500Vrms

Learn More

Datasheet

1,600Expected 31/7/2026

Cut Tape

$6.79

$6.36

$5.81

$5.40

$5.25

Reel

$4.23

MouseReel Available

Min.: 1
Mult.: 1

: 800

LAN Transformers

LAN

SMD/SMT

180 uH

1.5 kV

- 40 C

+ 85 C

12.7 mm

8.67 mm

4 mm

WE-LANAQ

Reel, Cut Tape, MouseReel

Audio Transformers / Signal Transformers WE-LAN 1Port SMD Trnsfmr

749014011
Wurth Elektronik
1: $16.66
Non-Stocked Lead-Time 16 Weeks

Mfr. Part No.
749014011

Mouser Part No
710-749014011

Wurth Elektronik

Audio Transformers / Signal Transformers WE-LAN 1Port SMD Trnsfmr

Learn More

Datasheet

Non-Stocked Lead-Time 16 Weeks

Cut Tape

$16.66

$16.08

$15.18

$14.28

Reel

$13.40

$12.95

MouseReel Available

Min.: 1
Mult.: 1

: 250

LAN Transformers

LAN

SMD/SMT

350 uH

4 kVAC

0 C

+ 70 C

Quad

10/100 Base-T

24.55 mm x 18.25 mm x 10.85 mm

24.55 mm

18.25 mm

10.85 mm

WE-LAN

Reel, Cut Tape, MouseReel

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

749014018
Wurth Elektronik
1,200: $15.04
Non-Stocked

Mfr. Part No.
749014018

Mouser Part No
710-749014018

Wurth Elektronik

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

Learn More

Datasheet

Non-Stocked

Cut Tape

$15.04

Min.: 1,200
Mult.: 300

: 300

LAN Transformers

LAN

SMD/SMT

100 kHz to 100 MHz

350 uH

4 kVAC

0 C

+ 70 C

Single

10/100 Base-T

17.1 mm

15.34 mm

8.4 mm

WE-LAN

Reel

Audio Transformers / Signal Transformers 10/100/1000 Base-T SMT Transfmr 1 Port

749020015
Wurth Elektronik
350: $8.57
Non-Stocked Lead-Time 17 Weeks

Mfr. Part No.
749020015

Mouser Part No
710-749020015

Wurth Elektronik

Audio Transformers / Signal Transformers 10/100/1000 Base-T SMT Transfmr 1 Port

Learn More

Datasheet

Non-Stocked Lead-Time 17 Weeks

Reel

$8.57

$8.04

Min.: 350
Mult.: 350

: 350

LAN Transformers

LAN

SMD/SMT

350 uH

1.5 kV

- 40 C

+ 85 C

4 Channel

18.01 mm

13.72 mm

6.73 mm

WE-LAN

Reel

Audio Transformers / Signal Transformers 10G Base-T SMT Transformer

749023020
Wurth Elektronik
300: $7.55
Non-Stocked Lead-Time 15 Weeks

Mfr. Part No.
749023020

Mouser Part No
710-749023020

Wurth Elektronik

Audio Transformers / Signal Transformers 10G Base-T SMT Transformer

Learn More

Datasheet

Non-Stocked Lead-Time 15 Weeks

Reel

$7.55

$7.47

Min.: 300
Mult.: 300

: 300

LAN Transformers

LAN

SMD/SMT

350 uH

1.5 kV

10/100/1000 Base-T, LAN, Ethernet

WE-LAN

Reel

Ethernet Solutions

Customer Service Office

Company

Resources

Support

7.1 mm
7.11 mm
7.5 mm
8.67 mm
8.8 mm
9.1 mm
9.4 mm
9.5 mm
9.52 mm
9.6 mm
9.7 mm
10.3 mm
12 mm
12.2 mm
12.7 mm
13.72 mm
14.5 mm
14.65 mm
14.75 mm
15.11 mm

2.35 mm
2.4 mm
3 mm
4 mm
4.1 mm
4.25 mm
4.5 mm
5.33 mm
5.4 mm
5.6 mm
5.7 mm
6.15 mm
6.35 mm
6.5 mm
6.6 mm
6.73 mm
7.2 mm
8.4 mm
8.5 mm
8.65 mm