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

749020010A
Wurth Elektronik
1: $9.60
4,190In Stock

Mfr. Part No.
749020010A

Mouser Part No
710-749020010A

Wurth Elektronik

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

Learn More

Datasheet

4,190In Stock

Cut Tape

$9.60

$8.78

$8.13

$7.63

Reel

$7.30

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 SMT Transfrmr 1000BT 1 Port ETR

749020011A
Wurth Elektronik
1: $9.60
2,954In Stock

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

2,954In Stock

Cut Tape

$9.60

$8.78

$8.13

$7.63

Reel

$7.30

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 SMT Transfrmr 1000BT 1 Port

749020111A
Wurth Elektronik
1: $5.49
3,133In Stock
3,000Expected 29/5/2026

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

3,133In Stock

3,000Expected 29/5/2026

Cut Tape

$5.49

$5.17

$4.88

$4.68

Reel

$4.50

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: $8.98
1,517In Stock

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

1,517In Stock

Cut Tape

$8.98

$8.66

$8.17

$7.70

$7.21

Reel

$6.98

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: $18.49
419In Stock
400Expected 5/6/2026

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

419In Stock

400Expected 5/6/2026

Cut Tape

$18.49

$15.29

$12.84

$12.32

Reel

$12.32

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

7490220121
Wurth Elektronik / Midcom
1: $8.98
1,736In Stock

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

1,736In Stock

Cut Tape

$8.98

$8.67

$8.15

$7.66

Reel

$7.19

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: $8.98
1,966In Stock

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

1,966In Stock

Cut Tape

$8.98

$8.67

$8.15

$7.66

Reel

$7.19

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 4kVrms

7490240120
Wurth Elektronik
1: $39.02
126In 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

126In Stock

Cut Tape

$39.02

$32.51

$29.63

$29.58

View

Reel

$21.99

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: $16.61
277In 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

277In Stock

Cut Tape

$16.61

$13.84

$12.59

$11.44

Reel

$10.65

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: $16.61
263In Stock
720On 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

263In Stock

720On Order

Cut Tape

$16.61

$13.84

$12.59

$11.44

Reel

$10.40

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 1KBsT nonPoE 350uH 1Port 1500Vrms

749024015C
Wurth Elektronik
1: $16.43
402In 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

402In Stock

Cut Tape

$16.43

$16.40

$16.39

$16.37

Reel

$14.76

View

MouseReel Available

Min.: 1
Mult.: 1

: 400

LAN Transformers

LAN

SMD/SMT

350 uH

1.5 kV

- 40 C

+ 85 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

749050017
Wurth Elektronik
1: $18.25
471In Stock

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

471In Stock

Cut Tape

$18.25

$15.15

$13.16

$11.90

Reel

$11.90

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 10GBase-T SMD 1 Port ETR Trnsfmr

749050018
Wurth Elektronik
1: $18.26
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

$18.26

$15.16

$13.18

$11.90

Reel

$11.90

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: $21.82
461In Stock
580Expected 17/7/2026

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

461In Stock

580Expected 17/7/2026

Cut Tape

$21.82

$18.25

$18.24

$15.80

Reel

$12.90

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: $16.22
620In 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

620In Stock

Cut Tape

$16.22

$13.40

$11.27

$10.80

Reel

$10.80

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 MID-PLC ST8500 1 mH

750510231
Wurth Elektronik
1: $4.35
3,168In Stock
2,112On Order

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

3,168In Stock

2,112On Order

$4.35

$4.06

$3.77

$3.48

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 10/100 Base-TX SMT Transformer 1 Port

7490100111B
Wurth Elektronik
1: $5.45
580In Stock
1,300Expected 26/6/2026

Mfr. Part No.
7490100111B

Mouser Part No
710-7490100111B

Wurth Elektronik

Audio Transformers / Signal Transformers WE-LAN 10/100 Base-TX SMT Transformer 1 Port

Learn More

Datasheet

580In Stock

1,300Expected 26/6/2026

Cut Tape

$5.45

$4.93

$4.60

$4.25

Reel

$3.06

MouseReel Available

Min.: 1
Mult.: 1

: 650

LAN Transformers

LAN

SMD/SMT

350 uH

1.5 kVAC

WE-LAN

Reel, Cut Tape, MouseReel

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

7490220120
Wurth Elektronik
1: $8.26
894In Stock
800Expected 29/5/2026

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

894In Stock

800Expected 29/5/2026

Cut Tape

$8.26

$7.96

$7.48

$7.05

Reel

$6.60

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 Trans 1 Port 1000BT 1 Port

749023010A
Wurth Elektronik
1: $9.62
351In Stock

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

351In Stock

Cut Tape

$9.62

$8.80

$8.13

$7.65

Reel

$7.65

$7.31

MouseReel Available

Min.: 1
Mult.: 1

: 400

LAN Transformers

LAN

SMD/SMT

350 uH

1500 Vrms

0 C

+ 70 C

Single

LAN

17.5 mm

15.6 mm

5.4 mm

WE-LAN

Reel, Cut Tape, MouseReel

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

750510730
Wurth Elektronik
1: $5.94
491In Stock
1,120Expected 20/8/2026

Mfr. Part No.
750510730

Mouser Part No
710-750510730

Wurth Elektronik

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

Learn More

Datasheet

491In Stock

1,120Expected 20/8/2026

Cut Tape

$5.94

$5.37

$5.16

$4.99

Reel

$4.04

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 10/100/1000 Base-T 24pin pitch 1.27mm 1.5k Vrms isolation LP

749020112B
Wurth Elektronik
1: $12.36
5,277On Order
New Product

Mfr. Part No.
749020112B

Mouser Part No
710-749020112B

New Product

Wurth Elektronik

Audio Transformers / Signal Transformers WE-LAN 10/100/1000 Base-T 24pin pitch 1.27mm 1.5k Vrms isolation LP

Learn More

Datasheet

5,277On Order

Cut Tape

$12.36

$11.80

$11.02

$10.55

$10.08

Reel

$9.16

MouseReel Available

Min.: 1
Mult.: 1

: 1,320

SMT Transformers

LAN

SMD/SMT

350 uH

1.5 kVAC

- 40 C

+ 105 C

17.85 mm

9.55 mm

2.38 mm

WE-LAN

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: $21.32
370Expected 5/6/2026

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

370Expected 5/6/2026

Cut Tape

$21.32

$19.59

$17.67

$16.04

Reel

$14.66

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-AMT Trnsfmr 30uH .350Ohm

750082154
Wurth Elektronik
1: $1.10
11,901On Order

Mfr. Part No.
750082154

Mouser Part No
710-750082154

Wurth Elektronik

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

Learn More

Datasheet

11,901On Order

Cut Tape

$1.10

$1.09

$1.02

$0.922

$0.819

Reel

$0.819

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 WE-LAN Design Kit LAN Transformers

749010
Wurth Elektronik
1: $385.27
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

$385.27

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: $17.03
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

$17.03

$16.43

$15.51

$14.60

Reel

$13.69

$13.23

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