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 10GBsT PoE+ 120uH 1Port 1500Vrms

749052051
Wurth Elektronik
1: $16.22
362In 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

362In Stock

Cut Tape

$16.22

$13.40

$11.27

$10.80

Reel

$10.80

MouseReel Available

Min.: 1
Mult.: 1

Reel: 290

LAN Transformers

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 DP83822 SMT Transfrmr 100BT 1 Port ETR

749013011
Wurth Elektronik
1: $3.41
5,091In Stock

Mfr. Part No.
749013011

Mouser Part No
710-749013011

Wurth Elektronik

Audio Transformers / Signal Transformers WE-LAN DP83822 SMT Transfrmr 100BT 1 Port ETR

Learn More

Datasheet

5,091In Stock

Cut Tape

$3.41

$3.32

Reel

$2.72

MouseReel Available

Min.: 1
Mult.: 1

Reel: 750

LAN Transformers

LAN

SMD/SMT

350 uH

- 40 C

+ 85 C

Dual

10/100 Base-T

12.95 mm

7.11 mm

5.33 mm

WE-LAN

Reel, Cut Tape, MouseReel

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

7490240120
Wurth Elektronik
1: $39.02
132In 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

132In Stock

Cut Tape

$39.02

$32.51

$29.63

$29.58

View

Reel

$21.99

MouseReel Available

Min.: 1
Mult.: 1

Reel: 200

High Voltager LAN Transformers

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: $10.61
590In Stock

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

590In Stock

Cut Tape

$10.61

$9.55

$9.16

$8.88

Reel

$8.09

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 400

LAN Transformers

Module

SMD/SMT

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: $18.25
545In 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

545In Stock

Cut Tape

$18.25

$15.15

$13.16

$11.90

Reel

$11.90

Quote

MouseReel Available

Min.: 1
Mult.: 1

Reel: 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 4PPoE Trnsfmr

749052050
Wurth Elektronik
1: $21.82
492In Stock

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

492In Stock

Cut Tape

$21.82

$18.25

$18.24

$15.80

Reel

$12.90

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 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 MID-PLC ST8500 1 mH -

750510730
Wurth Elektronik
1: $5.94
1,523In Stock

Mfr. Part No.
750510730

Mouser Part No
710-750510730

Wurth Elektronik

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

Learn More

Datasheet

1,523In Stock

Cut Tape

$5.94

$5.37

$5.16

$4.99

Reel

$4.04

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 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 Base-TX SMT Transformer 1 Port

7490100111B
Wurth Elektronik
1: $5.45
543In Stock

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

543In Stock

Cut Tape

$5.45

$4.93

$4.60

$4.25

Reel

$3.06

MouseReel Available

Min.: 1
Mult.: 1

Reel: 650

WE-LAN

Reel, Cut Tape, MouseReel

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

749010012A
Wurth Elektronik
1: $5.45
190In Stock
600Expected 27/2/2026

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

190In Stock

600Expected 27/2/2026

Cut Tape

$5.45

$4.93

$4.60

$4.25

Reel

$3.06

MouseReel Available

Min.: 1
Mult.: 1

Reel: 600

LAN Transformers

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 DP83822 10/100 Base-T 1Port SMD Transfrme

7490120110
Wurth Elektronik / Midcom
1: $7.12
8In Stock
1,950Expected 20/2/2026

Mfr. Part No.
7490120110

Mouser Part No
710-7490120110

Wurth Elektronik / Midcom

Audio Transformers / Signal Transformers WE-LAN DP83822 10/100 Base-T 1Port SMD Transfrme

Learn More

Datasheet

Product Comments

8In Stock

1,950Expected 20/2/2026

Cut Tape

$7.12

$6.59

$5.99

$5.43

Reel

$4.95

$4.49

MouseReel Available

Min.: 1
Mult.: 1

Reel: 650

LAN Transformers

LAN

SMD/SMT

100 kHz to 100 MHz

350 uH

1.5 kVAC

- 40 C

+ 85 C

Single

10/100 Base-T

12.7 mm

9.52 mm

5.6 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: $8.26
56In Stock
800Expected 20/2/2026

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

56In Stock

800Expected 20/2/2026

Cut Tape

$8.26

$7.96

$7.48

$7.05

Reel

$6.60

MouseReel Available

Min.: 1
Mult.: 1

Reel: 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

Reel: 400

LAN Transformers

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 WE-LAN 1Port SMD Trnsfmr

749014010
Wurth Elektronik
1: $10.83
45In Stock
900On Order

Mfr. Part No.
749014010

Mouser Part No
710-749014010

Wurth Elektronik

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

Learn More

Datasheet

45In Stock

900On Order

Cut Tape

$10.83

$10.45

$9.87

$9.29

Reel

$8.70

$8.41

MouseReel Available

Min.: 1
Mult.: 1

Reel: 300

LAN Transformers

LAN

SMD/SMT

1 MHz to 100 MHz

350 uH

4.5 kVAC

0 C

+ 70 C

Quad

10/100 Base-T

17.1 mm x 14.75 mm x 8.4 mm

17.1 mm

15.34 mm

8.4 mm

WE-LAN

Reel, Cut Tape, MouseReel

Audio Transformers / Signal Transformers WE-LAN 1KBsT nonPoE 350uH 2Port 1500Vrms

749020022A
Wurth Elektronik
1: $23.78
61In Stock

Mfr. Part No.
749020022A

Mouser Part No
710-749020022A

Wurth Elektronik

Audio Transformers / Signal Transformers WE-LAN 1KBsT nonPoE 350uH 2Port 1500Vrms

Learn More

Datasheet

61In Stock

Cut Tape

$23.78

$19.64

$16.54

Reel

$13.83

MouseReel Available

Min.: 1
Mult.: 1

Reel: 330

LAN Transformers

SMD/SMT

350 uH

1.5 kV

- 40 C

+ 85 C

27.7 mm

7.5 mm

8.5 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
4In 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

4In Stock

200On Order

Cut Tape

$16.61

$13.84

$12.59

$11.44

Reel

$10.65

MouseReel Available

Min.: 1
Mult.: 1

Reel: 200

LAN Transformers

LAN Transformer

SMD/SMT

350 uH

- 40 C

+ 85 C

28.32 mm

12.7 mm

WE-LAN

Reel, Cut Tape, MouseReel

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

750082154
Wurth Elektronik
1: $1.10
348In Stock
12,000On Order

Mfr. Part No.
750082154

Mouser Part No
710-750082154

Wurth Elektronik

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

Learn More

Datasheet

348In Stock

12,000On Order

Cut Tape

$1.10

$1.09

$1.02

$0.922

$0.819

Reel

$0.819

MouseReel Available

Min.: 1
Mult.: 1

Reel: 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 10/100BaseT nonPoE 350uH 4500Vrm

7490140123B
Wurth Elektronik
1: $16.61
600Expected 20/2/2026

Mfr. Part No.
7490140123B

Mouser Part No
710-7490140123B

Wurth Elektronik

Audio Transformers / Signal Transformers WE-LAN 10/100BaseT nonPoE 350uH 4500Vrm

Learn More

Datasheet

600Expected 20/2/2026

Cut Tape

$16.61

$13.84

$12.59

Reel

$11.44

MouseReel Available

Min.: 1
Mult.: 1

Reel: 300

LAN Transformers

SMD/SMT

350 uH

4.5 kV

- 40 C

+ 85 C

17.1 mm

14.75 mm

8.4 mm

WE-LAN

Reel, Cut Tape, MouseReel

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

7490220115
Wurth Elektronik
1: $18.49
697On Order

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

697On Order

Cut Tape

$18.49

$15.29

$12.84

$12.32

Reel

$12.32

MouseReel Available

Min.: 1
Mult.: 1

Reel: 400

LAN Transformers

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 Base-T SMT 24P pitch 1.27mm 1.5KVrms isolation. PoE 350mA

749023113C
Wurth Elektronik
1: $11.58
2,334On Order

Mfr. Part No.
749023113C

Mouser Part No
710-749023113C

Wurth Elektronik

Audio Transformers / Signal Transformers WE-LAN 10/100/1000 Base-T SMT 24P pitch 1.27mm 1.5KVrms isolation. PoE 350mA

Learn More

Datasheet

2,334On Order

Cut Tape

$11.58

$10.63

$9.59

$8.70

Reel

$7.95

MouseReel Available

Min.: 1
Mult.: 1

Reel: 1,200

LAN Transformers

LAN Transformer

SMD/SMT

350 uH

- 40 C

+ 85 C

16.5 mm

9.6 mm

2.4 mm

WE-LAN

Reel, Cut Tape, MouseReel

Audio Transformers / Signal Transformers WE-LAN 2.5G / 5GB Base-T 1Port ETR

749080010
Wurth Elektronik
1: $17.12
400Expected 20/2/2026

Mfr. Part No.
749080010

Mouser Part No
710-749080010

Wurth Elektronik

Audio Transformers / Signal Transformers WE-LAN 2.5G / 5GB Base-T 1Port ETR

Learn More

Datasheet

400Expected 20/2/2026

Cut Tape

$17.12

$15.72

$14.18

$12.87

Reel

$12.87

MouseReel Available

Min.: 1
Mult.: 1

Reel: 400

LAN Transformers

SMD/SMT

200 uH

- 40 C

+ 85 C

13.97 mm

12 mm

WE-LAN

Reel, Cut Tape, MouseReel

Audio Transformers / Signal Transformers MID-PLC ST8500 1 mH

750510231
Wurth Elektronik
1: $4.35
2,094On 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

2,094On 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 MID-PLC ST7540 1 mH -

750510682
Wurth Elektronik
1: $5.88
1,120Expected 30/4/2026

Mfr. Part No.
750510682

Mouser Part No
710-750510682

Wurth Elektronik

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

Learn More

Datasheet

1,120Expected 30/4/2026

Cut Tape

$5.88

$5.48

$5.09

Reel

$4.70

$4.31

$3.92

MouseReel Available

Min.: 1
Mult.: 1

Reel: 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 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 6/3/2026

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 6/3/2026

Cut Tape

$21.32

$19.59

$17.67

$16.04

Reel

$14.66

MouseReel Available

Min.: 1
Mult.: 1

Reel: 290

LAN Transformers

LAN Transformer

SMD/SMT

350 uH

- 40 C

+ 85 C

18.29 mm

16 mm

8.8 mm

WE-LAN

Reel, Cut Tape, MouseReel

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

749010
Wurth Elektronik
1: $385.27
Non-Stocked

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

$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
250: $13.69
Non-Stocked

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

Reel

$13.69

$13.23

Min.: 250
Mult.: 250

Reel: 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

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