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: $9.40
854In Stock
1,200Expected 18/9/2026

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

854In Stock

1,200Expected 18/9/2026

Cut Tape

$9.40

$8.60

$7.96

$7.47

Reel

$7.14

MouseReel Available

Min.: 1
Mult.: 1

: 400

LAN Transformers

LAN

SMD/SMT

350 uH

1500 Vrms

- 40 C

+ 85 C

Single

LAN

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: $8.91
5,065In 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

5,065In 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
3,261In 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

3,261In 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 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 14/8/2026

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 14/8/2026

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
1,347In Stock
2,000Expected 14/8/2026

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

1,347In Stock

2,000Expected 14/8/2026

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 14/8/2026

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 14/8/2026

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
1,933In 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

1,933In 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 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
96In 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

96In 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
412In 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

412In 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 10GBsT PoE+ 120uH 1Port 1500Vrms

749052051
Wurth Elektronik
1: $15.87
546In Stock

Mfr. Part No.
749052051

Mouser Part No
710-749052051

Wurth Elektronik

Audio Transformers / Signal Transformers WE-LAN 10GBsT PoE+ 120uH 1Port 1500Vrms

Learn More

Datasheet

546In Stock

Cut Tape

$15.87

$13.11

$11.03

$10.57

Reel

$10.57

MouseReel Available

Min.: 1
Mult.: 1

: 290

LAN Transformers

LAN

SMD/SMT

120 uH

1.5 kV

- 40 C

+ 85 C

18.29 mm

14.7 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 MID-PLC ST8500 1 mH

750510231
Wurth Elektronik
1: $4.26
4,629In Stock

Mfr. Part No.
750510231

Mouser Part No
710-750510231

Wurth Elektronik

Audio Transformers / Signal Transformers MID-PLC ST8500 1 mH

Learn More

Datasheet

Product Comments

4,629In Stock

$4.26

$3.97

$3.69

$3.40

View

Min.: 1
Mult.: 1

Signal Transformers

PLC

Through Hole

1 mH

2 kVAC

- 20 C

+ 80 C

Single

ST7590

13.97 mm

13.46 mm

MID-PLC

Tray

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

749010012A
Wurth Elektronik
1: $5.33
800In Stock
600Expected 14/8/2026

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

800In Stock

600Expected 14/8/2026

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 1KBsT nonPoE 350uH 1Port 4kVrms

7490240120
Wurth Elektronik
1: $38.18
74In Stock

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

74In Stock

Cut Tape

$38.18

$31.81

$29.00

$28.94

View

Reel

$21.52

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 10/100/1000 Base-T SMT Transformer 1 Port 40pin pitch 1.27mm

7490240140
Wurth Elektronik
1: $16.25
24In Stock
200Expected 18/8/2026

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

200Expected 18/8/2026

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
103In 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

103In 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 10GBase-T SMD 1 Port ETR Trnsfmr

749050017
Wurth Elektronik
1: $17.86
185In Stock
450Expected 14/8/2026

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

185In Stock

450Expected 14/8/2026

Cut Tape

$17.86

$14.82

$12.88

$11.64

Reel

$11.64

Quote

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 1000Base-T 350uH 1Port 1500Vrms

749020023A
Wurth Elektronik
1: $8.12
57,522Expected 11/9/2026

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 11/9/2026

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-AMT Trnsfmr 30uH .350Ohm

750082154
Wurth Elektronik
1: $1.07
9,000On Order

Mfr. Part No.
750082154

Mouser Part No
710-750082154

Wurth Elektronik

Audio Transformers / Signal Transformers WE-AMT Trnsfmr 30uH .350Ohm

Learn More

Datasheet

9,000On Order

Cut Tape

$1.07

$1.00

$0.902

$0.801

Reel

$0.801

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

Signal Transformers

SMD/SMT

30 uH

3.75 kVAC

Single

Analog Modem, Point Of Sale, Signal Isolation

4.39 mm x 9.14 mm x 1.98 mm

4.39 mm

9.14 mm

1.98 mm

MID-DAA

Reel, Cut Tape, MouseReel

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

750510730
Wurth Elektronik
1: $5.81
2,336On Order

Mfr. Part No.
750510730

Mouser Part No
710-750510730

Wurth Elektronik

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

Learn More

Datasheet

2,336On Order

Cut Tape

$5.81

$5.25

$5.05

$4.88

Reel

$3.96

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 Design Kit LAN Transformers

749010
Wurth Elektronik
1: $376.95
Non-Stocked Lead-Time 19 Weeks

Mfr. Part No.
749010

Mouser Part No
710-749010

Wurth Elektronik

Audio Transformers / Signal Transformers WE-LAN Design Kit LAN Transformers

Learn More

Datasheet

Non-Stocked Lead-Time 19 Weeks

$376.95

Min.: 1
Mult.: 1

Design Kits

SMD/SMT

500 kHz to 100 MHz

350 uH

1.5 kVAC

- 40 C

+ 85 C

12.95 mm

7.11 mm

5.33 mm

WE-LAN

Bulk

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

Transformers

Customer Service Office

Company

Resources

Support

4.39 mm
7.87 mm
9.78 mm
12.7 mm
12.95 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
18.25 mm
18.29 mm
18.3 mm
24.55 mm
27.7 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
13.5 mm
13.72 mm
13.97 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
6.35 mm
6.5 mm
6.6 mm
6.73 mm
7.2 mm
7.24 mm
8.4 mm
8.5 mm
8.65 mm