Circuit Protection – Mouser United Kingdom

.hide-partial { max-height: none; } .show-more { display: none; }

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.

.catnav-wrapper { height: auto; overflow: visible; } .catalog-nav-tabs ul { white-space: normal; }

Types of Circuit Protection

List Images

Results: 326

Search within results

In Stock

Normally Stocked

Active

New Products

RoHS Compliant

.search-refine-wrapper { display: inline-block; min-width: 100%; } .scroll-body { overflow-x: visible; } .search-table-wrapper { overflow: visible; } .hide-partial { max-height: none; } .show-more { display: none; }

Part #

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

SP3003-08ATG
Littelfuse
1: £0.882
19,943In Stock

Mfr. Part No.
SP3003-08ATG

Mouser Part No
576-SP3003-08ATG

Littelfuse

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

Learn More

Datasheet

19,943In Stock

Cut Tape

£0.882

£0.716

£0.547

£0.432

View

Reel

£0.341

MouseReel Available

Min.: 1
Mult.: 1

Reel: 4,000

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

SP3021-01ETG
Littelfuse
1: £0.105
34,481In 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

34,481In Stock

Cut Tape

£0.105

£0.085

Reel

£0.085

MouseReel Available

Min.: 1
Mult.: 1

Reel: 10,000

ESD Protection Diodes / TVS Diodes 0.35pF 20kV BIDIRECTIONAL

SP3022-01ETG
Littelfuse
1: £0.165
49,065In 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

49,065In Stock

Cut Tape

£0.165

£0.114

£0.104

£0.098

Reel

£0.085

MouseReel Available

Min.: 1
Mult.: 1

Reel: 10,000

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

SP3031-01ETG
Littelfuse
1: £0.135
46,812In Stock

Mfr. Part No.
SP3031-01ETG

Mouser Part No
576-SP3031-01ETG

Littelfuse

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

Datasheet

46,812In Stock

Cut Tape

£0.135

£0.103

£0.079

Reel

£0.079

MouseReel Available

Min.: 1
Mult.: 1

Reel: 10,000

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

SP3130-01WTG
Littelfuse
1: £0.421
41,977In 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

41,977In Stock

Cut Tape

£0.421

£0.265

£0.168

£0.137

Reel

£0.083

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 10,000

ESD Protection Diodes / TVS Diodes 4CH 15A 3.3V 3.5pF Lightning Protection

SP3312TUTG
Littelfuse
1: £0.518
3,931In Stock

Mfr. Part No.
SP3312TUTG

Mouser Part No
576-SP3312TUTG

Littelfuse

ESD Protection Diodes / TVS Diodes 4CH 15A 3.3V 3.5pF Lightning Protection

Learn More

Datasheet

3,931In Stock

Cut Tape

£0.518

£0.434

£0.361

£0.35

£0.348

Reel

£0.338

MouseReel Available

Min.: 1
Mult.: 1

Reel: 3,000

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

SP3374NUTG
Littelfuse
1: £0.952
6,218In Stock

Mfr. Part No.
SP3374NUTG

Mouser Part No
576-SP3374NUTG

Littelfuse

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

Learn More

Datasheet

6,218In Stock

Cut Tape

£0.952

£0.638

£0.625

£0.593

Reel

£0.593

MouseReel Available

Min.: 1
Mult.: 1

Reel: 3,000

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

SP3400-02UTG
Littelfuse
1: £0.292
18,704In Stock
12,000Expected 19/05/2026

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

18,704In Stock

12,000Expected 19/05/2026

Cut Tape

£0.292

£0.217

£0.213

£0.21

Reel

£0.179

MouseReel Available

Min.: 1
Mult.: 1

Reel: 3,000

ESD Protection Diodes / TVS Diodes 2CH 5V 2A 0.2pF

SP3423-02UTG
Littelfuse
1: £0.292
10,163In Stock

Mfr. Part No.
SP3423-02UTG

Mouser Part No
576-SP3423-02UTG

Littelfuse

ESD Protection Diodes / TVS Diodes 2CH 5V 2A 0.2pF

Learn More

Datasheet

10,163In Stock

Cut Tape

£0.292

£0.242

£0.197

£0.189

Reel

£0.164

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 3,000

ESD Protection Diodes / TVS Diodes 1.5pF 30kV

SP4044-04ATG
Littelfuse
1: £0.39
11,094In Stock

Mfr. Part No.
SP4044-04ATG

Mouser Part No
576-SP4044-04ATG

Littelfuse

ESD Protection Diodes / TVS Diodes 1.5pF 30kV

Learn More

Datasheet

11,094In Stock

Cut Tape

£0.39

£0.367

£0.345

Reel

£0.341

MouseReel Available

Min.: 1
Mult.: 1

Reel: 4,000

ESD Protection Diodes / TVS Diodes 8 Ch 30kV 2.5V 4.4pF

SP4060-08ATG
Littelfuse
1: £0.473
2,523In Stock
4,000Expected 28/04/2026

Mfr. Part No.
SP4060-08ATG

Mouser Part No
576-SP4060-08ATG

Littelfuse

ESD Protection Diodes / TVS Diodes 8 Ch 30kV 2.5V 4.4pF

Learn More

Datasheet

2,523In Stock

4,000Expected 28/04/2026

Cut Tape

£0.473

£0.466

£0.464

£0.457

£0.455

Reel

£0.413

MouseReel Available

Min.: 1
Mult.: 1

Reel: 4,000

Surface Mount Fuses 600VAC 0.5A .56ohms 461 NANO2

0461.500ER
Littelfuse
1: £1.44
4,494In Stock
7,734Expected 29/05/2026

Mfr. Part No.
0461.500ER

Mouser Part No
576-0461.500ER

Littelfuse

Surface Mount Fuses 600VAC 0.5A .56ohms 461 NANO2

Learn More

Datasheet

4,494In Stock

7,734Expected 29/05/2026

Cut Tape

£1.44

£1.26

£1.18

£0.986

View

Reel

£0.639

MouseReel Available

Min.: 1
Mult.: 1

Reel: 2,500

Surface Mount Fuses 600VAC 2A .045ohms 461 NANO2

0461002.ER
Littelfuse
1: £1.10
7,259In Stock
5,000Expected 28/05/2026

Mfr. Part No.
0461002.ER

Mouser Part No
576-0461002.ER

Littelfuse

Surface Mount Fuses 600VAC 2A .045ohms 461 NANO2

Learn More

Datasheet

7,259In Stock

5,000Expected 28/05/2026

Cut Tape

£1.10

£0.96

£0.899

£0.741

View

Reel

£0.615

MouseReel Available

Min.: 1
Mult.: 1

Reel: 2,500

Surface Mount Fuses 600VAC 1.25A .104ohms 461 NANO2

04611.25ER
Littelfuse
1: £1.10
18,812In Stock

Mfr. Part No.
04611.25ER

Mouser Part No
576-04611.25ER

Littelfuse

Surface Mount Fuses 600VAC 1.25A .104ohms 461 NANO2

Learn More

Datasheet

18,812In Stock

Cut Tape

£1.10

£0.96

£0.899

£0.741

View

Reel

£0.432

MouseReel Available

Min.: 1
Mult.: 1

Reel: 2,500

Gas Discharge Tubes - GDTs / Gas Plasma Arrestors STANDARD 90V NOM

CG590L
Littelfuse
1: £2.40
3,850In Stock

Mfr. Part No.
CG590L

Mouser Part No
576-CG590L

Littelfuse

Gas Discharge Tubes - GDTs / Gas Plasma Arrestors STANDARD 90V NOM

Datasheet

3,850In Stock

Cut Tape

£2.40

£2.00

£1.84

£1.53

View

Reel

£1.07

Min.: 1
Mult.: 1

Reel: 1,000

Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP 5X5 90V Minitube 2 Term

SL0902A090SM
Littelfuse
1: £1.68
3,573In Stock

Mfr. Part No.
SL0902A090SM

Mouser Part No
576-SL0902A090SM

Littelfuse

Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP 5X5 90V Minitube 2 Term

Learn More

Datasheet

3,573In Stock

Cut Tape

£1.68

£1.48

£1.36

£1.13

Reel

£1.10

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 900

Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP 5X5 230V Minitube 2 Term

SL0902A230SM
Littelfuse
1: £1.80
2,851In Stock

Mfr. Part No.
SL0902A230SM

Mouser Part No
576-SL0902A230SM

Littelfuse

Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP 5X5 230V Minitube 2 Term

Learn More

Datasheet

2,851In Stock

Cut Tape

£1.80

£1.56

£1.45

£1.20

View

Reel

£0.818

MouseReel Available

Min.: 1
Mult.: 1

Reel: 900

ESD Protection Diodes / TVS Diodes 4 Ch 12kV 5V TVS Diode Array

SP0504SHTG
Littelfuse
1: £0.353
19,344In Stock
6,000Expected 22/05/2026

Mfr. Part No.
SP0504SHTG

Mouser Part No
576-SP0504SHTG

Littelfuse

ESD Protection Diodes / TVS Diodes 4 Ch 12kV 5V TVS Diode Array

Learn More

Datasheet

19,344In Stock

6,000Expected 22/05/2026

Cut Tape

£0.353

£0.255

£0.217

£0.199

£0.197

Reel

£0.197

MouseReel Available

Min.: 1
Mult.: 1

Reel: 3,000

ESD Protection Diodes / TVS Diodes 4 channels 1.1pF 15kV

SP3002-04JTG
Littelfuse
1: £0.368
27,689In Stock
12,000Expected 05/06/2026

Mfr. Part No.
SP3002-04JTG

Mouser Part No
576-SP3002-04JTG

Littelfuse

ESD Protection Diodes / TVS Diodes 4 channels 1.1pF 15kV

Datasheet

27,689In Stock

12,000Expected 05/06/2026

Cut Tape

£0.368

£0.33

£0.265

£0.237

£0.234

Reel

£0.234

MouseReel Available

Min.: 1
Mult.: 1

Reel: 3,000

ESD Protection Diodes / TVS Diodes 4 Ch, 12kV, 0.85pF SOT5630

SP3004-04XTG
Littelfuse
1: £0.338
8,585In Stock

Mfr. Part No.
SP3004-04XTG

Mouser Part No
576-SP3004-04XTG

Littelfuse

ESD Protection Diodes / TVS Diodes 4 Ch, 12kV, 0.85pF SOT5630

Datasheet

8,585In Stock

Cut Tape

£0.338

£0.261

£0.21

Reel

£0.21

£0.209

MouseReel Available

Min.: 1
Mult.: 1

Reel: 3,000

ESD Protection Diodes / TVS Diodes 4 Ch 8kV 6V .45pF

SP3010-04UTG
Littelfuse
1: £0.443
21,833In Stock
21,000Expected 29/06/2026

Mfr. Part No.
SP3010-04UTG

Mouser Part No
576-SP3010-04UTG

Littelfuse

ESD Protection Diodes / TVS Diodes 4 Ch 8kV 6V .45pF

Learn More

Datasheet

21,833In Stock

21,000Expected 29/06/2026

Cut Tape

£0.443

£0.366

£0.313

£0.295

Reel

£0.264

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 3,000

ESD Protection Diodes / TVS Diodes 6 Ch 8kV 6V 0.4 pF

SP3011-06UTG
Littelfuse
1: £0.555
13,739In Stock
12,000Expected 22/07/2026

Mfr. Part No.
SP3011-06UTG

Mouser Part No
576-SP3011-06UTG

Littelfuse

ESD Protection Diodes / TVS Diodes 6 Ch 8kV 6V 0.4 pF

Datasheet

13,739In Stock

12,000Expected 22/07/2026

Cut Tape

£0.555

£0.45

£0.374

£0.356

£0.354

Reel

£0.318

MouseReel Available

Min.: 1
Mult.: 1

Reel: 3,000

ESD Protection Diodes / TVS Diodes 4CH 20A 3.3V 3.5pF Lightning Protection

SP3304NUTG
Littelfuse
1: £0.78
4,680In Stock
9,000Expected 09/06/2026

Mfr. Part No.
SP3304NUTG

Mouser Part No
576-SP3304NUTG

Littelfuse

ESD Protection Diodes / TVS Diodes 4CH 20A 3.3V 3.5pF Lightning Protection

Learn More

Datasheet

4,680In Stock

9,000Expected 09/06/2026

Cut Tape

£0.78

£0.675

£0.582

£0.536

Reel

£0.536

£0.529

MouseReel Available

Min.: 1
Mult.: 1

Reel: 3,000

ESD Protection Diodes / TVS Diodes 1 Ch 22kV 9.2V .15pF SOD882

SP3522-01ETG
Littelfuse
1: £0.196
152,269In Stock

Mfr. Part No.
SP3522-01ETG

Mouser Part No
576-SP3522-01ETG

Littelfuse

ESD Protection Diodes / TVS Diodes 1 Ch 22kV 9.2V .15pF SOD882

Learn More

Datasheet

152,269In Stock

Cut Tape

£0.196

£0.127

£0.072

£0.071

£0.057

Reel

£0.057

MouseReel Available

Min.: 1
Mult.: 1

Reel: 10,000

ESD Protection Diodes / TVS Diodes 2.5pF 30A for Surge Protection

SP4020-01FTG
Littelfuse
1: £0.413
56,207In Stock

Mfr. Part No.
SP4020-01FTG

Mouser Part No
576-SP4020-01FTG

Littelfuse

ESD Protection Diodes / TVS Diodes 2.5pF 30A for Surge Protection

Learn More

Datasheet

56,207In Stock

Cut Tape

£0.413

£0.318

£0.228

£0.192

£0.182

Reel

£0.182

MouseReel Available

Min.: 1
Mult.: 1

Reel: 3,000

Ethernet ESD, Lightning, & Power Fault Protection

Types of Circuit Protection

Customer Service Office

Company

Resources

Support