Circuit Protection – Mouser United Kingdom

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Ethernet ESD, Lightning, & Power Fault Protection

Littelfuse Ethernet/PoE ESD, EFT, Lightning, and Power Fault Protection ensures that the power fault overcurrent can be protected with Telelink fuses. The Ethernet Power Fault Protection includes the SMCJ and SP40 TVS Diode, SP3, SRV05xx, LC03xx, and SP40xx Diode Array, and the 0461xxx Fuse series. Littelfuse Ethernet/PoE ESD, EFT, Lightning, and Power Fault Protection products meet various applicable standards.

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Types of Circuit Protection

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Results: 308

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RoHS Compliant

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Part #

Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 315-525V 2A GDT T/R 2 Term

SG420
Littelfuse
1: £0.978
2,595In Stock

Mfr. Part No.
SG420

Mouser Part No
576-SG420

Littelfuse

Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 315-525V 2A GDT T/R 2 Term

Learn More

Datasheet

2,595In Stock

Cut Tape

£0.978

£0.863

£0.803

£0.676

View

Reel

£0.465

MouseReel Available

Min.: 1
Mult.: 1

: 2,000

ESD Protection Diodes / TVS Diodes .3pF 10KV 28V SOD8820

SP3130-01ETG
Littelfuse
1: £0.15
17,695In Stock

Mfr. Part No.
SP3130-01ETG

Mouser Part No
576-SP3130-01ETG

Littelfuse

ESD Protection Diodes / TVS Diodes .3pF 10KV 28V SOD8820

Learn More

Datasheet

17,695In Stock

Cut Tape

£0.15

£0.083

£0.079

Reel

£0.079

MouseReel Available

Min.: 1
Mult.: 1

: 10,000

Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 450-750V 2A GDT T/R 2 Term

SG600Q
Littelfuse
1: £0.986
2,306In Stock

Mfr. Part No.
SG600Q

Mouser Part No
576-SG600Q

Littelfuse

Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 450-750V 2A GDT T/R 2 Term

Datasheet

2,306In Stock

Cut Tape

£0.986

£0.969

£0.652

Reel

£0.652

MouseReel Available

Min.: 1
Mult.: 1

: 2,000

ESD Protection Diodes / TVS Diodes 1.3pF 15A UNIDIRECTIONAL

SP4022-01FTG
Littelfuse
1: £0.233
65,502In Stock

Mfr. Part No.
SP4022-01FTG

Mouser Part No
576-SP4022-01FTG

Littelfuse

ESD Protection Diodes / TVS Diodes 1.3pF 15A UNIDIRECTIONAL

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Datasheet

65,502In Stock

Cut Tape

£0.233

£0.145

£0.137

Reel

£0.137

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

ESD Protection Diodes / TVS Diodes 1 Ch 22kV 9.2V .15pF 0201 DFN

SP3522-01UTG
Littelfuse
1: £0.188
63,629In Stock

Mfr. Part No.
SP3522-01UTG

Mouser Part No
576-SP3522-01UTG

Littelfuse

ESD Protection Diodes / TVS Diodes 1 Ch 22kV 9.2V .15pF 0201 DFN

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Datasheet

63,629In Stock

Cut Tape

£0.188

£0.12

£0.049

£0.045

Reel

£0.045

MouseReel Available

Min.: 1
Mult.: 1

: 15,000

Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 200V Square SG

SG200
Littelfuse
1: £1.08
2,136In Stock

Mfr. Part No.
SG200

Mouser Part No
576-SG200

Littelfuse

Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 200V Square SG

Datasheet

2,136In Stock

Cut Tape

£1.08

£0.969

£0.908

£0.746

View

Reel

£0.443

MouseReel Available

Min.: 1
Mult.: 1

: 2,000

ESD Protection Diodes / TVS Diodes .3pF 10KV 18V 0201 Flipchip

SP3118-01WTG
Littelfuse
1: £0.135
11,682In Stock

Mfr. Part No.
SP3118-01WTG

Mouser Part No
576-SP3118-01WTG

Littelfuse

ESD Protection Diodes / TVS Diodes .3pF 10KV 18V 0201 Flipchip

Learn More

Datasheet

11,682In Stock

Cut Tape

£0.135

£0.093

£0.083

£0.081

Reel

£0.079

MouseReel Available

Min.: 1
Mult.: 1

: 10,000

ESD Protection Diodes / TVS Diodes 1.3pF 12A UNIDIRECTIONAL

SP4023-01FTG
Littelfuse
1: £0.353
7,864In Stock

Mfr. Part No.
SP4023-01FTG

Mouser Part No
576-SP4023-01FTG

Littelfuse

ESD Protection Diodes / TVS Diodes 1.3pF 12A UNIDIRECTIONAL

Learn More

Datasheet

7,864In Stock

Cut Tape

£0.353

£0.238

£0.173

£0.145

£0.137

Reel

£0.137

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

ESD Protection Diodes / TVS Diodes 4 channels .65pF 8kV

SP3001-04JTG
Littelfuse
1: £0.353
57,442In Stock

Mfr. Part No.
SP3001-04JTG

Mouser Part No
576-SP3001-04JTG

Littelfuse

ESD Protection Diodes / TVS Diodes 4 channels .65pF 8kV

Datasheet

57,442In Stock

Cut Tape

£0.353

£0.351

£0.287

£0.26

Reel

£0.227

View

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

ESD Protection Diodes / TVS Diodes 1.3pF 7A UNIDIRECTIONAL

SP4024-01FTG
Littelfuse
1: £0.285
404,779In Stock

Mfr. Part No.
SP4024-01FTG

Mouser Part No
576-SP4024-01FTG

Littelfuse

ESD Protection Diodes / TVS Diodes 1.3pF 7A UNIDIRECTIONAL

Learn More

Datasheet

404,779In Stock

Cut Tape

£0.285

£0.194

£0.186

£0.166

£0.15

Reel

£0.137

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

ESD Protection Diodes / TVS Diodes ESD 6V UNI

SRV05-4HTG-D
Littelfuse
1: £0.89
52,988In Stock

Mfr. Part No.
SRV05-4HTG-D

Mouser Part No
576-SRV05-4HTG-D

Littelfuse

ESD Protection Diodes / TVS Diodes ESD 6V UNI

Learn More

Datasheet

52,988In Stock

Cut Tape

£0.89

£0.579

£0.399

£0.31

£0.282

Reel

£0.257

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 172-288V 2A GDT T/R 2 Term

SG230
Littelfuse
1: £1.11
3,255In Stock

Mfr. Part No.
SG230

Mouser Part No
576-SG230

Littelfuse

Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 172-288V 2A GDT T/R 2 Term

Learn More

Datasheet

3,255In Stock

Cut Tape

£1.11

£1.01

£0.863

£0.639

View

Reel

£0.489

MouseReel Available

Min.: 1
Mult.: 1

: 2,000

Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 263-437V GDT T/R 2 Term

SG350Q
Littelfuse
1: £1.18
3,994In Stock
6,000Expected 25/06/2026

Mfr. Part No.
SG350Q

Mouser Part No
576-SG350Q

Littelfuse

Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 263-437V GDT T/R 2 Term

Learn More

Datasheet

3,994In Stock

6,000Expected 25/06/2026

Cut Tape

£1.18

£0.986

£0.908

£0.746

View

Reel

£0.489

MouseReel Available

Min.: 1
Mult.: 1

: 2,000

Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 52-98V 2A GDT T/R 2 Term

SG75
Littelfuse
1: £1.15
5,910In Stock
6,000Expected 25/05/2026

Mfr. Part No.
SG75

Mouser Part No
576-SG75

Littelfuse

Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 52-98V 2A GDT T/R 2 Term

Learn More

Datasheet

5,910In Stock

6,000Expected 25/05/2026

Cut Tape

£1.15

£0.986

£0.882

£0.746

View

Reel

£0.625

MouseReel Available

Min.: 1
Mult.: 1

: 2,000

Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 63-117V 2A GDT T/R 2 Term

SG90
Littelfuse
1: £1.07
6,764In Stock

Mfr. Part No.
SG90

Mouser Part No
576-SG90

Littelfuse

Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 63-117V 2A GDT T/R 2 Term

Learn More

Datasheet

6,764In Stock

Cut Tape

£1.07

£0.978

£0.849

£0.728

View

Reel

£0.489

MouseReel Available

Min.: 1
Mult.: 1

: 2,000

ESD Protection Diodes / TVS Diodes 2 Ch 8kV 0.65pF SPA

SP3003-02JTG
Littelfuse
1: £0.428
6,812In Stock
9,000Expected 27/07/2026

Mfr. Part No.
SP3003-02JTG

Mouser Part No
576-SP3003-02JTG

Littelfuse

ESD Protection Diodes / TVS Diodes 2 Ch 8kV 0.65pF SPA

Learn More

Datasheet

6,812In Stock

9,000Expected 27/07/2026

Cut Tape

£0.428

£0.347

£0.302

£0.299

Reel

£0.262

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

ESD Protection Diodes / TVS Diodes 2 channels .65pF

SP3003-02XTG
Littelfuse
1: £0.526
11,791In Stock

Mfr. Part No.
SP3003-02XTG

Mouser Part No
576-SP3003-02XTG

Littelfuse

ESD Protection Diodes / TVS Diodes 2 channels .65pF

Learn More

Datasheet

11,791In Stock

Cut Tape

£0.526

£0.434

£0.361

£0.324

Reel

£0.308

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

ESD Protection Diodes / TVS Diodes 2 CH 8KV 0.5pF

SP3006-02XTG
Littelfuse
1: £0.736
3,791In Stock

Mfr. Part No.
SP3006-02XTG

Mouser Part No
576-SP3006-02XTG

Littelfuse

ESD Protection Diodes / TVS Diodes 2 CH 8KV 0.5pF

Datasheet

3,791In Stock

Cut Tape

£0.736

£0.488

£0.423

£0.344

£0.33

Reel

£0.308

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

ESD Protection Diodes / TVS Diodes 5V 1uA 8kV BIDIRECTIONAL

SP3021-01ETG
Littelfuse
1: £0.105
28,805In Stock

Mfr. Part No.
SP3021-01ETG

Mouser Part No
576-SP3021-01ETG

Littelfuse

ESD Protection Diodes / TVS Diodes 5V 1uA 8kV BIDIRECTIONAL

Learn More

Datasheet

28,805In Stock

Cut Tape

£0.105

£0.085

Reel

£0.085

MouseReel Available

Min.: 1
Mult.: 1

: 10,000

ESD Protection Diodes / TVS Diodes 0.35pF 20kV BIDIRECTIONAL

SP3022-01ETG
Littelfuse
1: £0.165
35,954In Stock

Mfr. Part No.
SP3022-01ETG

Mouser Part No
576-SP3022-01ETG

Littelfuse

ESD Protection Diodes / TVS Diodes 0.35pF 20kV BIDIRECTIONAL

Learn More

Datasheet

35,954In Stock

Cut Tape

£0.165

£0.113

£0.109

£0.104

£0.096

Reel

£0.085

MouseReel Available

Min.: 1
Mult.: 1

: 10,000

ESD Protection Diodes / TVS Diodes 5V 1uA 10kV UNIDIRECTIONAL

SP3031-01ETG
Littelfuse
1: £0.135
21,118In Stock
40,000Expected 10/08/2026

Mfr. Part No.
SP3031-01ETG

Mouser Part No
576-SP3031-01ETG

Littelfuse

ESD Protection Diodes / TVS Diodes 5V 1uA 10kV UNIDIRECTIONAL

Datasheet

21,118In Stock

40,000Expected 10/08/2026

Cut Tape

£0.135

£0.103

£0.079

Reel

£0.079

MouseReel Available

Min.: 1
Mult.: 1

: 10,000

ESD Protection Diodes / TVS Diodes .3pF 10KV 18V SOD8820

SP3118-01ETG
Littelfuse
1: £0.225
20,245In Stock
50,000Expected 28/04/2026

Mfr. Part No.
SP3118-01ETG

Mouser Part No
576-SP3118-01ETG

Littelfuse

ESD Protection Diodes / TVS Diodes .3pF 10KV 18V SOD8820

Learn More

Datasheet

20,245In Stock

50,000Expected 28/04/2026

Cut Tape

£0.225

£0.144

£0.083

£0.082

Reel

£0.079

MouseReel Available

Min.: 1
Mult.: 1

: 10,000

ESD Protection Diodes / TVS Diodes .3pF 10KV 28V 0201 Flipchip

SP3130-01WTG
Littelfuse
1: £0.30
39,204In Stock

Mfr. Part No.
SP3130-01WTG

Mouser Part No
576-SP3130-01WTG

Littelfuse

ESD Protection Diodes / TVS Diodes .3pF 10KV 28V 0201 Flipchip

Learn More

Datasheet

39,204In Stock

Cut Tape

£0.30

£0.195

£0.134

£0.113

View

Reel

£0.079

MouseReel Available

Min.: 1
Mult.: 1

: 10,000

ESD Protection Diodes / TVS Diodes 3.3V 40A AEC-Q101

SP3374NUTG
Littelfuse
1: £0.952
5,305In Stock
6,000Expected 27/05/2026

Mfr. Part No.
SP3374NUTG

Mouser Part No
576-SP3374NUTG

Littelfuse

ESD Protection Diodes / TVS Diodes 3.3V 40A AEC-Q101

Learn More

Datasheet

5,305In Stock

6,000Expected 27/05/2026

Cut Tape

£0.952

£0.638

£0.625

£0.593

Reel

£0.593

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

ESD Protection Diodes / TVS Diodes 1pF uDFN-6L 2 Ch Diode Array

SP3400-02UTG
Littelfuse
1: £0.271
14,031In Stock
24,000Expected 28/04/2026

Mfr. Part No.
SP3400-02UTG

Mouser Part No
576-SP3400-02UTG

Littelfuse

ESD Protection Diodes / TVS Diodes 1pF uDFN-6L 2 Ch Diode Array

Learn More

Datasheet

14,031In Stock

24,000Expected 28/04/2026

Cut Tape

£0.271

£0.207

Reel

£0.179

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

Ethernet ESD, Lightning, & Power Fault Protection

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