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: 326

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RoHS Compliant

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Part #

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

SP4020-01FTG-C
Littelfuse
1: £0.323
37,195In Stock

Mfr. Part No.
SP4020-01FTG-C

Mouser Part No
576-SP4020-01FTG-C

Littelfuse

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

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Datasheet

37,195In Stock

Cut Tape

£0.323

£0.32

£0.25

£0.224

£0.201

Reel

£0.201

MouseReel Available

Min.: 1
Mult.: 1

Reel: 3,000

ESD Protection Diodes / TVS Diodes 2.5pF 25A BI for Surge Protection

SP4021-01FTG-C
Littelfuse
1: £0.225
65,844In Stock

Mfr. Part No.
SP4021-01FTG-C

Mouser Part No
576-SP4021-01FTG-C

Littelfuse

ESD Protection Diodes / TVS Diodes 2.5pF 25A BI for Surge Protection

Learn More

Datasheet

65,844In Stock

Cut Tape

£0.225

£0.196

£0.182

Reel

£0.182

MouseReel Available

Min.: 1
Mult.: 1

Reel: 3,000

ESD Protection Diodes / TVS Diodes 1.3pF 15A UNIDIRECTIONAL

SP4022-01FTG
Littelfuse
1: £0.405
66,032In Stock

Mfr. Part No.
SP4022-01FTG

Mouser Part No
576-SP4022-01FTG

Littelfuse

ESD Protection Diodes / TVS Diodes 1.3pF 15A UNIDIRECTIONAL

Learn More

Datasheet

66,032In Stock

Cut Tape

£0.405

£0.264

£0.173

£0.158

Reel

£0.137

MouseReel Available

Min.: 1
Mult.: 1

Reel: 3,000

ESD Protection Diodes / TVS Diodes 1.3pF 15A BIDIRECTIONAL

SP4022-01FTG-C
Littelfuse
1: £0.308
46,536In Stock

Mfr. Part No.
SP4022-01FTG-C

Mouser Part No
576-SP4022-01FTG-C

Littelfuse

ESD Protection Diodes / TVS Diodes 1.3pF 15A BIDIRECTIONAL

Learn More

Datasheet

46,536In Stock

Cut Tape

£0.308

£0.225

£0.178

£0.168

£0.155

Reel

£0.155

MouseReel Available

Min.: 1
Mult.: 1

Reel: 3,000

ESD Protection Diodes / TVS Diodes 1.3pF 7A BIDIRECTIONAL

SP4024-01FTG-C
Littelfuse
1: £0.338
23,157In Stock

Mfr. Part No.
SP4024-01FTG-C

Mouser Part No
576-SP4024-01FTG-C

Littelfuse

ESD Protection Diodes / TVS Diodes 1.3pF 7A BIDIRECTIONAL

Learn More

Datasheet

23,157In Stock

Cut Tape

£0.338

£0.29

£0.251

£0.197

£0.177

Reel

£0.155

MouseReel Available

Min.: 1
Mult.: 1

Reel: 3,000

ESD Protection Diodes / TVS Diodes 1.5pF 30kV

SP4045-04ATG
Littelfuse
1: £0.383
9,414In Stock

Mfr. Part No.
SP4045-04ATG

Mouser Part No
576-SP4045-04ATG

Littelfuse

ESD Protection Diodes / TVS Diodes 1.5pF 30kV

Learn More

Datasheet

9,414In Stock

Cut Tape

£0.383

£0.34

£0.338

£0.315

Reel

£0.315

MouseReel Available

Min.: 1
Mult.: 1

Reel: 4,000

Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GDT 2T 600V

CG5600LTR
Littelfuse
1: £1.96
590In Stock

Mfr. Part No.
CG5600LTR

Mouser Part No
576-CG5600LTR

Littelfuse

Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GDT 2T 600V

Datasheet

590In Stock

Cut Tape

£1.96

Reel

£1.96

Min.: 1
Mult.: 1

Reel: 1,000

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

CG590MS
Littelfuse
1: £2.05
457In Stock

Mfr. Part No.
CG590MS

Mouser Part No
576-CG590MS

Littelfuse

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

Datasheet

457In Stock

Cut Tape

£2.05

£1.85

£1.75

£1.46

View

Reel

£1.07

MouseReel Available

Min.: 1
Mult.: 1

Reel: 900

Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 230V SMD Ultra Low 0.3pF

CG6230SM
Littelfuse
1: £1.82
669In Stock

Mfr. Part No.
CG6230SM

Mouser Part No
576-CG6230SM

Littelfuse

Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 230V SMD Ultra Low 0.3pF

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Datasheet

669In Stock

Cut Tape

£1.82

£1.69

£1.61

£1.30

View

Reel

£0.882

MouseReel Available

Min.: 1
Mult.: 1

Reel: 2,000

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

SG200
Littelfuse
1: £1.13
2,150In Stock

Mfr. Part No.
SG200

Mouser Part No
576-SG200

Littelfuse

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

Datasheet

2,150In Stock

Cut Tape

£1.13

£0.978

£0.908

£0.746

View

Reel

£0.489

MouseReel Available

Min.: 1
Mult.: 1

Reel: 2,000

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

SG230
Littelfuse
1: £0.995
1,255In Stock
2,000Expected 17/04/2026

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

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Datasheet

1,255In Stock

2,000Expected 17/04/2026

Cut Tape

£0.995

£0.882

£0.818

£0.691

View

Reel

£0.489

MouseReel Available

Min.: 1
Mult.: 1

Reel: 2,000

ESD Protection Diodes / TVS Diodes 4 Ch 8kV 0.65pF SPA

SP3003-04ATG
Littelfuse
1: £0.811
1,206In Stock

Mfr. Part No.
SP3003-04ATG

Mouser Part No
576-SP3003-04ATG

Littelfuse

ESD Protection Diodes / TVS Diodes 4 Ch 8kV 0.65pF SPA

Learn More

Datasheet

1,206In Stock

Cut Tape

£0.811

£0.656

£0.525

£0.509

View

Reel

£0.447

MouseReel Available

Min.: 1
Mult.: 1

Reel: 4,000

ESD Protection Diodes / TVS Diodes 4 channels .65pF

SP3003-04XTG
Littelfuse
1: £0.30
2,551In Stock
3,000Expected 25/05/2026

Mfr. Part No.
SP3003-04XTG

Mouser Part No
576-SP3003-04XTG

Littelfuse

ESD Protection Diodes / TVS Diodes 4 channels .65pF

Learn More

Datasheet

2,551In Stock

3,000Expected 25/05/2026

Cut Tape

£0.30

£0.27

£0.232

Reel

£0.221

£0.22

MouseReel Available

Min.: 1
Mult.: 1

Reel: 3,000

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

SP3006-02XTG
Littelfuse
1: £0.736
1,911In Stock

Mfr. Part No.
SP3006-02XTG

Mouser Part No
576-SP3006-02XTG

Littelfuse

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

Datasheet

1,911In Stock

Cut Tape

£0.736

£0.488

£0.423

£0.344

£0.33

Reel

£0.308

MouseReel Available

Min.: 1
Mult.: 1

Reel: 3,000

ESD Protection Diodes / TVS Diodes 5V 1uA 22kV UNIDIRECTIONAL

SP3030-01ETG
Littelfuse
1: £0.135
12,927In Stock
29,600Expected 18/03/2026

Mfr. Part No.
SP3030-01ETG

Mouser Part No
576-SP3030-01ETG

Littelfuse

ESD Protection Diodes / TVS Diodes 5V 1uA 22kV UNIDIRECTIONAL

Learn More

Datasheet

12,927In Stock

29,600Expected 18/03/2026

Cut Tape

£0.135

£0.10

£0.053

£0.052

View

Reel

£0.04

MouseReel Available

Min.: 1
Mult.: 1

Reel: 10,000

Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP BIPOLAR SURGE ARRESTOR MS

CG5230MS
Littelfuse
1: £2.17
371In Stock

Mfr. Part No.
CG5230MS

Mouser Part No
576-CG5230MS

Littelfuse

Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP BIPOLAR SURGE ARRESTOR MS

Datasheet

371In Stock

Cut Tape

£2.17

£1.80

£1.66

£1.37

View

Reel

£1.07

MouseReel Available

Min.: 1
Mult.: 1

Reel: 900

Gas Discharge Tubes - GDTs / Gas Plasma Arrestors STANDARD 350V NOM

CG5350L
Littelfuse
1: £2.28
599In Stock
1,000Expected 26/06/2026

Mfr. Part No.
CG5350L

Mouser Part No
576-CG5350L

Littelfuse

Gas Discharge Tubes - GDTs / Gas Plasma Arrestors STANDARD 350V NOM

Datasheet

599In Stock

1,000Expected 26/06/2026

Cut Tape

£2.28

£2.00

£1.84

£1.53

View

Reel

£1.07

Min.: 1
Mult.: 1

Reel: 1,000

Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 90V NOMINAL GP S.A. STANDARD

CG590LTR
Littelfuse
1: £2.17
138In Stock
2,000Expected 18/06/2026

Mfr. Part No.
CG590LTR

Mouser Part No
576-CG590LTR

Littelfuse

Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 90V NOMINAL GP S.A. STANDARD

Datasheet

138In Stock

2,000Expected 18/06/2026

Cut Tape

£2.17

£1.86

£1.72

£1.42

View

Reel

£0.995

Min.: 1
Mult.: 1

Reel: 1,000

ESD Protection Diodes / TVS Diodes 0.3pF SOT23-6L 4 Ch Diode Array

SP3019-04HTG
Littelfuse
1: £0.375
6,755In Stock

Mfr. Part No.
SP3019-04HTG

Mouser Part No
576-SP3019-04HTG

Littelfuse

ESD Protection Diodes / TVS Diodes 0.3pF SOT23-6L 4 Ch Diode Array

Learn More

Datasheet

6,755In Stock

Cut Tape

£0.375

£0.32

£0.25

£0.203

£0.189

Reel

£0.182

MouseReel Available

Min.: 1
Mult.: 1

Reel: 3,000

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

SP3522-01UTG
Littelfuse
1: £0.188
19,029In Stock
45,000Expected 10/04/2026

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

Learn More

Datasheet

19,029In Stock

45,000Expected 10/04/2026

Cut Tape

£0.188

£0.12

£0.049

£0.045

Reel

£0.045

MouseReel Available

Min.: 1
Mult.: 1

Reel: 15,000

ESD Protection Diodes / TVS Diodes 1 Ch 22kV 8.2V .3pF UNI SOD882

SP3530-01ETG
Littelfuse
1: £0.173
430In Stock
30,000Expected 10/06/2026

Mfr. Part No.
SP3530-01ETG

Mouser Part No
576-SP3530-01ETG

Littelfuse

ESD Protection Diodes / TVS Diodes 1 Ch 22kV 8.2V .3pF UNI SOD882

Learn More

Datasheet

430In Stock

30,000Expected 10/06/2026

Cut Tape

£0.173

£0.107

£0.059

£0.051

£0.046

Reel

£0.046

MouseReel Available

Min.: 1
Mult.: 1

Reel: 10,000

ESD Protection Diodes / TVS Diodes 1 Ch 22kV 8.2V .3pF UNI 0201 DFN

SP3530-01UTG
Littelfuse
1: £0.18
13,975In Stock

Mfr. Part No.
SP3530-01UTG

Mouser Part No
576-SP3530-01UTG

Littelfuse

ESD Protection Diodes / TVS Diodes 1 Ch 22kV 8.2V .3pF UNI 0201 DFN

Learn More

Datasheet

13,975In Stock

Cut Tape

£0.18

£0.12

£0.057

£0.052

View

Reel

£0.043

MouseReel Available

Min.: 1
Mult.: 1

Reel: 15,000

ESD Protection Diodes / TVS Diodes 2.5pF 25A for Surge Protection

SP4021-01FTG
Littelfuse
1: £0.361
4,599In Stock
21,000On Order

Mfr. Part No.
SP4021-01FTG

Mouser Part No
576-SP4021-01FTG

Littelfuse

ESD Protection Diodes / TVS Diodes 2.5pF 25A for Surge Protection

Learn More

Datasheet

4,599In Stock

21,000On Order

Cut Tape

£0.361

£0.34

£0.249

£0.195

£0.175

Reel

£0.165

MouseReel Available

Min.: 1
Mult.: 1

Reel: 3,000

ESD Protection Diodes / TVS Diodes 1.3pF 12A BIDIRECTIONAL

SP4023-01FTG-C
Littelfuse
1: £0.563
6,168In Stock
8,946On Order

Mfr. Part No.
SP4023-01FTG-C

Mouser Part No
576-SP4023-01FTG-C

Littelfuse

ESD Protection Diodes / TVS Diodes 1.3pF 12A BIDIRECTIONAL

Learn More

Datasheet

6,168In Stock

8,946On Order

Cut Tape

£0.563

£0.352

£0.251

£0.193

£0.174

Reel

£0.155

MouseReel Available

Min.: 1
Mult.: 1

Reel: 3,000

Surface Mount Fuses TELECOM NANO2 250V 16mm TAPE 1.25A

04611.25ER16
Littelfuse
1: £1.16
1,015In Stock

Mfr. Part No.
04611.25ER16

Mouser Part No
576-04611.25ER16

Littelfuse

Surface Mount Fuses TELECOM NANO2 250V 16mm TAPE 1.25A

Learn More

Datasheet

1,015In Stock

Cut Tape

£1.16

£1.05

£0.978

£0.811

View

Reel

£0.492

MouseReel Available

Min.: 1
Mult.: 1

Reel: 2,500

Ethernet ESD, Lightning, & Power Fault Protection

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