Audio Transformers / Signal Transformers

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Discrete LAN Magnetics

Bel Magnetic Solutions Discrete LAN Magnetics products deliver a broad range of magnetic-based solutions for high-speed networking and computer applications. This portfolio of single, dual, and quad SMT modules are compatible with IEEE 802.3 Ethernet standards for 10/100, 1G, 2.5G, 5G, and 10GBaseT transmission. Typical applications for Bel Magnetic Solutions Discrete LAN Magnetics are voice/video/data networking, high-performance computing, and storage traffic in enterprise and data centers.

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Part #

Audio Transformers / Signal Transformers XFRMR LAN 5G 60W POE SMD

S558-5500-JV
Bel Magnetic Solutions
1: $5.35
1,508In Stock

Mfr. Part No.
S558-5500-JV

Mouser Part No
530-S558-5500-JV

Bel Magnetic Solutions

Audio Transformers / Signal Transformers XFRMR LAN 5G 60W POE SMD

Learn More

Datasheet

1,508In Stock

Cut Tape

$5.35

$4.03

$3.74

$3.62

Reel

$3.12

View

Min.: 1
Mult.: 1

: 380

PoE Transformers

SMD/SMT

1 MHz to 300 MHz

- 40 C

+ 85 C

Quad

PoE

17.53 mm

12.19 mm

5.71 mm

Reel, Cut Tape

Audio Transformers / Signal Transformers Power Module

S558-5999-J1-F
Bel Magnetic Solutions
1: $2.28
3,404In Stock

Mfr. Part No.
S558-5999-J1-F

Mouser Part No
530-S558-5999-J1-F

Bel Magnetic Solutions

Audio Transformers / Signal Transformers Power Module

Learn More

Datasheet

3,404In Stock

Cut Tape

$2.28

$2.07

$1.93

$1.85

Reel

$1.46

View

MouseReel Available

Min.: 1
Mult.: 1

: 900

LAN Transformers

Module

SMD/SMT

1 MHz to 10 MHz

350 uH

Single

10/100 Base-T

12.32 mm

7.24 mm

5.71 mm

Reel, Cut Tape, MouseReel

Audio Transformers / Signal Transformers 2.5G 4pPoE transformer

S558-5500-JB
Bel Magnetic Solutions
1: $3.95
1,399In Stock
1,900Expected 28/09/2026

Mfr. Part No.
S558-5500-JB

Mouser Part No
530-S558-5500-JB

Bel Magnetic Solutions

Audio Transformers / Signal Transformers 2.5G 4pPoE transformer

Learn More

Datasheet

1,399In Stock

1,900Expected 28/09/2026

Cut Tape

$3.95

$3.53

$3.33

$3.22

Reel

$2.72

View

Min.: 1
Mult.: 1

: 380

Reel, Cut Tape

Audio Transformers / Signal Transformers Transformer

S558-5999-AB-F
Bel Magnetic Solutions
1: $3.95
916In Stock
1,280Expected 18/09/2026

Mfr. Part No.
S558-5999-AB-F

Mouser Part No
530-S558-5999-AB-F

Bel Magnetic Solutions

Audio Transformers / Signal Transformers Transformer

Learn More

Datasheet

916In Stock

1,280Expected 18/09/2026

Cut Tape

$3.95

$3.57

$3.43

$3.32

Reel

$2.98

View

MouseReel Available

Min.: 1
Mult.: 1

: 320

LAN Transformers

Module

SMD/SMT

100 kHz to 125 MHz

350 uH

- 40 C

+ 85 C

Single

1000 Base-T

15.24 mm

13.26 mm

6.35 mm

Reel, Cut Tape, MouseReel

Audio Transformers / Signal Transformers Transformer

S558-5999-P3-F
Bel Magnetic Solutions
1: $5.44
786In Stock

Mfr. Part No.
S558-5999-P3-F

Mouser Part No
530-S558-5999-P3-F

Bel Magnetic Solutions

Audio Transformers / Signal Transformers Transformer

Learn More

Datasheet

786In Stock

Cut Tape

$5.44

$4.92

$4.72

$4.58

Reel

$3.97

View

MouseReel Available

Min.: 1
Mult.: 1

: 380

LAN Transformers

Module

SMD/SMT

100 kHz to 125 MHz

350 uH

0 C

+ 70 C

Single

1000 Base-T

17.53 mm

12.19 mm

5.71 mm

Reel, Cut Tape, MouseReel

Audio Transformers / Signal Transformers Transformer

S558-5999-Q2-F
Bel Magnetic Solutions
1: $7.14
319In Stock
480Expected 21/09/2026

Mfr. Part No.
S558-5999-Q2-F

Mouser Part No
530-S558-5999-Q2-F

Bel Magnetic Solutions

Audio Transformers / Signal Transformers Transformer

Learn More

Datasheet

319In Stock

480Expected 21/09/2026

Cut Tape

$7.14

$5.69

$5.36

$4.97

Reel

$4.68

View

MouseReel Available

Min.: 1
Mult.: 1

: 240

LAN Transformers

Module

SMD/SMT

1 MHz to 125 MHz

350 uH

0 C

+ 70 C

Dual

1000 Base-T

27.81 mm

12.19 mm

7.24 mm

Reel, Cut Tape, MouseReel

Audio Transformers / Signal Transformers Transformer

S558-5999-T3-F
Bel Magnetic Solutions
1: $6.19
1,382In Stock

Mfr. Part No.
S558-5999-T3-F

Mouser Part No
530-S558-5999-T3-F

Bel Magnetic Solutions

Audio Transformers / Signal Transformers Transformer

Learn More

Datasheet

1,382In Stock

Cut Tape

$6.19

$4.75

$4.53

$4.39

Reel

$3.87

View

MouseReel Available

Min.: 1
Mult.: 1

: 320

LAN Transformers

Module

SMD/SMT

100 kHz to 125 MHz

350 uH

0 C

+ 70 C

Single

1000 Base-T

15.24 mm

13.26 mm

6.35 mm

Reel, Cut Tape, MouseReel

Audio Transformers / Signal Transformers Transformer

S558-5999-T7-F
Bel Magnetic Solutions
1: $2.05
4,467In Stock
3,600Expected 28/08/2026

Mfr. Part No.
S558-5999-T7-F

Mouser Part No
530-S558-5999-T7-F

Bel Magnetic Solutions

Audio Transformers / Signal Transformers Transformer

Learn More

Datasheet

4,467In Stock

3,600Expected 28/08/2026

Cut Tape

$2.05

$1.86

$1.73

$1.66

Reel

$1.35

View

MouseReel Available

Min.: 1
Mult.: 1

: 900

LAN Transformers

Module

SMD/SMT

1 MHz to 80 MHz

350 uH

- 40 C

+ 85 C

Single

10/100 Base-T

12.32 mm

7.24 mm

5.72 mm

Reel, Cut Tape, MouseReel

Audio Transformers / Signal Transformers Transformer

S558-5999-W2-F
Bel Magnetic Solutions
1: $2.28
1,077In Stock

Mfr. Part No.
S558-5999-W2-F

Mouser Part No
530-S558-5999-W2-F

Bel Magnetic Solutions

Audio Transformers / Signal Transformers Transformer

Learn More

Datasheet

1,077In Stock

Cut Tape

$2.28

$2.07

$1.93

$1.81

Reel

$1.53

View

MouseReel Available

Min.: 1
Mult.: 1

: 900

LAN Transformers

Module

SMD/SMT

100 kHz to 250 MHz

350 uH

- 40 C

+ 85 C

Single

10/100 Base-T

12.32 mm

7.24 mm

5.71 mm

Reel, Cut Tape, MouseReel

Audio Transformers / Signal Transformers 10G PoE 100W

S558-10GB-23
Bel Magnetic Solutions
1: $8.47
250In Stock
300Expected 04/09/2026

Mfr. Part No.
S558-10GB-23

Mouser Part No
530-S558-10GB-23

Bel Magnetic Solutions

Audio Transformers / Signal Transformers 10G PoE 100W

Learn More

Datasheet

250In Stock

300Expected 04/09/2026

Cut Tape

$8.47

$6.75

$6.35

$5.89

Reel

$5.46

View

Min.: 1
Mult.: 1

: 300

PoE Transformers

SMD/SMT

1 MHz to 600 MHz

- 40 C

+ 85 C

Quad

10G PoE

15.49 mm

15.24 mm

7.37 mm

Reel, Cut Tape

Audio Transformers / Signal Transformers Transformer

S558-5999-AT-F
Bel Magnetic Solutions
1: $5.34
31In Stock
760Expected 31/07/2026

Mfr. Part No.
S558-5999-AT-F

Mouser Part No
530-S558-5999-AT-F

Bel Magnetic Solutions

Audio Transformers / Signal Transformers Transformer

Learn More

Datasheet

31In Stock

760Expected 31/07/2026

Cut Tape

$5.34

$4.70

$4.50

$4.36

View

Reel

$3.54

MouseReel Available

Min.: 1
Mult.: 1

: 380

LAN Transformers

Module

SMD/SMT

100 kHz to 125 MHz

350 uH

- 40 C

+ 85 C

Single

1000 Base-T

17.53 mm

12.19 mm

5.71 mm

Reel, Cut Tape, MouseReel

Audio Transformers / Signal Transformers Transformer

S558-5999-AZ-F
Bel Magnetic Solutions
1: $7.81
72In Stock
2,200Expected 24/07/2026

Mfr. Part No.
S558-5999-AZ-F

Mouser Part No
530-S558-5999-AZ-F

Bel Magnetic Solutions

Audio Transformers / Signal Transformers Transformer

Learn More

Datasheet

72In Stock

2,200Expected 24/07/2026

Cut Tape

$7.81

$6.82

$6.47

$6.13

Reel

$5.20

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,100

LAN Transformers

Module

SMD/SMT

1 MHz to 125 MHz

350 uH

0 C

+ 70 C

Single

1000 Base-T

22.35 mm

13.72 mm

1.73 mm

Reel, Cut Tape, MouseReel

Audio Transformers / Signal Transformers Transformer

S558-5999-T5-F
Bel Magnetic Solutions
1: $2.05
546In Stock
2,700Expected 21/09/2026

Mfr. Part No.
S558-5999-T5-F

Mouser Part No
530-S558-5999-T5-F

Bel Magnetic Solutions

Audio Transformers / Signal Transformers Transformer

Learn More

Datasheet

546In Stock

2,700Expected 21/09/2026

Cut Tape

$2.05

$1.86

$1.73

$1.64

Reel

$1.41

View

MouseReel Available

Min.: 1
Mult.: 1

: 900

LAN Transformers

Module

SMD/SMT

350 uH

- 40 C

+ 85 C

Single

10/100 Base-T

12.32 mm

7.24 mm

5.71 mm

Reel, Cut Tape, MouseReel

Audio Transformers / Signal Transformers Transformer

S558-5999-U7-F
Bel Magnetic Solutions
1: $2.05
68,887On Order

Mfr. Part No.
S558-5999-U7-F

Mouser Part No
530-S558-5999-U7-F

Bel Magnetic Solutions

Audio Transformers / Signal Transformers Transformer

Learn More

Datasheet

68,887On Order

Cut Tape

$2.05

$1.86

$1.73

$1.66

Reel

$1.31

View

MouseReel Available

Min.: 1
Mult.: 1

: 900

LAN Transformers

Module

SMD/SMT

300 kHz to 100 MHz

350 uH

- 40 C

+ 85 C

Single

10/100 Base-T

12.32 mm

7.24 mm

5.72 mm

Reel, Cut Tape, MouseReel

Audio Transformers / Signal Transformers XFRMR LAN 2.5G 60W POE SMD

S558-5500-JD
Bel Magnetic Solutions
1: $3.95
1,520On Order

Mfr. Part No.
S558-5500-JD

Mouser Part No
530-S558-5500-JD

Bel Magnetic Solutions

Audio Transformers / Signal Transformers XFRMR LAN 2.5G 60W POE SMD

Learn More

Datasheet

1,520On Order

Cut Tape

$3.95

$3.53

$3.33

$3.22

Reel

$2.53

View

Min.: 1
Mult.: 1

: 380

PoE Transformers

SMD/SMT

1 MHz to 150 MHz

0 C

+ 70 C

Quad

PoE

17.53 mm

12.19 mm

5.71 mm

Reel, Cut Tape

Audio Transformers / Signal Transformers Transformer

S558-5999-M8-F
Bel Magnetic Solutions
1: $4.08
720Expected 25/09/2026

Mfr. Part No.
S558-5999-M8-F

Mouser Part No
530-S558-5999-M8-F

Bel Magnetic Solutions

Audio Transformers / Signal Transformers Transformer

Learn More

Datasheet

720Expected 25/09/2026

Cut Tape

$4.08

$3.07

$2.85

$2.76

Reel

$2.36

View

MouseReel Available

Min.: 1
Mult.: 1

: 380

LAN Transformers

Module

SMD/SMT

100 kHz to 125 MHz

350 uH

0 C

+ 70 C

Single

1000 Base-T

17.53 mm

12.19 mm

5.71 mm

Reel, Cut Tape, MouseReel

Audio Transformers / Signal Transformers Transformer

S558-5999-Q9-F
Bel Magnetic Solutions
1: $6.90
1,920On Order

Mfr. Part No.
S558-5999-Q9-F

Mouser Part No
530-S558-5999-Q9-F

Bel Magnetic Solutions

Audio Transformers / Signal Transformers Transformer

Learn More

Datasheet

1,920On Order

Cut Tape

$6.90

$5.50

$5.17

$4.80

Reel

$4.53

View

MouseReel Available

Min.: 1
Mult.: 1

: 320

LAN Transformers

Module

SMD/SMT

100 kHz to 500 MHz

350 uH

0 C

+ 70 C

Dual

1000 Base-T

27.94 mm

15.24 mm

4.47 mm

Reel, Cut Tape, MouseReel

Audio Transformers / Signal Transformers Transformer

S558-5999-Z5-F
Bel Magnetic Solutions
1: $2.05
3,743On Order

Mfr. Part No.
S558-5999-Z5-F

Mouser Part No
530-S558-5999-Z5-F

Bel Magnetic Solutions

Audio Transformers / Signal Transformers Transformer

Learn More

Datasheet

3,743On Order

Cut Tape

$2.05

$1.86

$1.73

$1.66

View

Reel

$1.22

MouseReel Available

Min.: 1
Mult.: 1

: 900

LAN Transformers

Module

SMD/SMT

100 kHz to 100 MHz

350 uH

- 40 C

+ 85 C

Single

10/100 Base-T

12.32 mm

7.24 mm

5.71 mm

Reel, Cut Tape, MouseReel

Audio Transformers / Signal Transformers Power Module

S558-5999-AM-F
Bel Magnetic Solutions
2,200: $4.36
Non-Stocked Lead-Time 14 Weeks

Mfr. Part No.
S558-5999-AM-F

Mouser Part No
530-S558-5999-AM-F

Bel Magnetic Solutions

Audio Transformers / Signal Transformers Power Module

Learn More

Datasheet

Non-Stocked Lead-Time 14 Weeks

Cut Tape

$4.36

Min.: 2,200
Mult.: 1,100

: 1,100

LAN Transformers

Module

SMD/SMT

1 MHz to 100 MHz

350 uH

0 C

+ 70 C

Single

1000 Base-T

22.35 mm

13.72 mm

1.73 mm

Reel

Audio Transformers / Signal Transformers Power Module

S558-5999-Q3-F
Bel Magnetic Solutions
1: $9.07
Non-Stocked Lead-Time 14 Weeks

Mfr. Part No.
S558-5999-Q3-F

Mouser Part No
530-S558-5999-Q3-F

Bel Magnetic Solutions

Audio Transformers / Signal Transformers Power Module

Learn More

Datasheet

Non-Stocked Lead-Time 14 Weeks

Cut Tape

$9.07

$7.23

$6.80

$6.30

Reel

$5.95

View

MouseReel Available

Min.: 1
Mult.: 1

: 240

LAN Transformers

Module

SMD/SMT

1 MHz to 125 MHz

350 uH

0 C

+ 70 C

Dual

1000 Base-T

27.81 mm

12.19 mm

7.24 mm

Reel, Cut Tape, MouseReel

Discrete LAN Magnetics

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