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 #

ESD Protection Diodes / TVS Diodes 4 channels .65pF

SP3003-04XTG
Littelfuse
1: £0.952
1,596In Stock
9,000Expected 29/09/2026

Mfr. Part No.
SP3003-04XTG

Mouser Part No
576-SP3003-04XTG

Littelfuse

ESD Protection Diodes / TVS Diodes 4 channels .65pF

Learn More

Datasheet

1,596In Stock

9,000Expected 29/09/2026

Cut Tape

£0.952

£0.599

£0.394

£0.329

Reel

£0.24

View

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

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

SP3006-02XTG
Littelfuse
1: £0.952
1,809In Stock
3,000Expected 09/09/2026

Mfr. Part No.
SP3006-02XTG

Mouser Part No
576-SP3006-02XTG

Littelfuse

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

Datasheet

1,809In Stock

3,000Expected 09/09/2026

Cut Tape

£0.952

£0.636

£0.495

£0.407

£0.349

Reel

£0.323

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

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

SP3118-01WTG
Littelfuse
1: £0.436
9,589In 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

9,589In Stock

Cut Tape

£0.436

£0.271

£0.173

£0.143

Reel

£0.086

View

MouseReel Available

Min.: 1
Mult.: 1

: 10,000

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

CG5230MS
Littelfuse
1: £1.96
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

£1.96

£1.50

£1.27

£1.25

Reel

£1.19

MouseReel Available

Min.: 1
Mult.: 1

: 900

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

CG5600LTR
Littelfuse
1: £3.18
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

£3.18

£1.80

£1.70

Reel

£1.27

£1.23

Min.: 1
Mult.: 1

: 1,000

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

CG590LS
Littelfuse
1: £1.88
778In Stock

Mfr. Part No.
CG590LS

Mouser Part No
576-CG590LS

Littelfuse

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

Datasheet

778In Stock

Cut Tape

£1.88

£1.44

£1.20

£1.11

Reel

£0.995

Min.: 1
Mult.: 1

: 900

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

CG590MS
Littelfuse
1: £2.61
871In Stock

Mfr. Part No.
CG590MS

Mouser Part No
576-CG590MS

Littelfuse

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

Datasheet

871In Stock

Cut Tape

£2.61

£1.84

£1.41

£1.27

Reel

£1.18

MouseReel Available

Min.: 1
Mult.: 1

: 900

Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 90V SMD Ultra Low 0.3pF

CG690SM
Littelfuse
1: £1.83
888In Stock
2,000Expected 29/10/2026

Mfr. Part No.
CG690SM

Mouser Part No
576-CG690SM

Littelfuse

Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 90V SMD Ultra Low 0.3pF

Learn More

Datasheet

888In Stock

2,000Expected 29/10/2026

Cut Tape

£1.83

£1.41

£1.16

£1.07

£0.995

Reel

£0.978

MouseReel Available

Min.: 1
Mult.: 1

: 2,000

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

SG200
Littelfuse
1: £1.07
36In Stock
2,000Expected 03/09/2026

Mfr. Part No.
SG200

Mouser Part No
576-SG200

Littelfuse

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

Datasheet

36In Stock

2,000Expected 03/09/2026

Cut Tape

£1.07

£0.818

£0.678

£0.625

£0.543

Reel

£0.538

MouseReel Available

Min.: 1
Mult.: 1

: 2,000

Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 300-500V 2A GDT T/R 2 Term

SG400
Littelfuse
1: £1.07
16In Stock
4,000Expected 20/10/2026

Mfr. Part No.
SG400

Mouser Part No
576-SG400

Littelfuse

Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 300-500V 2A GDT T/R 2 Term

Learn More

Datasheet

16In Stock

4,000Expected 20/10/2026

Cut Tape

£1.07

£0.818

£0.678

£0.625

£0.56

Reel

£0.538

MouseReel Available

Min.: 1
Mult.: 1

: 2,000

Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 400-600V 2A GDT T/R 2 Term

SG500Q
Littelfuse
1: £1.13
1,850In Stock
2,000Expected 15/10/2026

Mfr. Part No.
SG500Q

Mouser Part No
576-SG500Q

Littelfuse

Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 400-600V 2A GDT T/R 2 Term

Datasheet

1,850In Stock

2,000Expected 15/10/2026

Cut Tape

£1.13

£0.748

£0.69

Reel

£0.69

MouseReel Available

Min.: 1
Mult.: 1

: 2,000

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

SG600Q
Littelfuse
1: £1.13
1,294In 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

1,294In Stock

Cut Tape

£1.13

£0.748

£0.716

Reel

£0.716

MouseReel Available

Min.: 1
Mult.: 1

: 2,000

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

SP3021-01ETG
Littelfuse
1: £0.398
2,340In Stock
20,000Expected 31/12/2026

Mfr. Part No.
SP3021-01ETG

Mouser Part No
576-SP3021-01ETG

Littelfuse

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

Learn More

Datasheet

2,340In Stock

20,000Expected 31/12/2026

Cut Tape

£0.398

£0.243

£0.154

£0.115

View

Reel

£0.089

MouseReel Available

Min.: 1
Mult.: 1

: 10,000

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

SP3031-01ETG
Littelfuse
1: £0.233
1,296In Stock
150,000On Order

Mfr. Part No.
SP3031-01ETG

Mouser Part No
576-SP3031-01ETG

Littelfuse

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

Datasheet

1,296In Stock

150,000On Order

Cut Tape

£0.233

£0.146

£0.096

£0.083

Reel

£0.083

MouseReel Available

Min.: 1
Mult.: 1

: 10,000

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

SP3312TUTG
Littelfuse
1: £0.995
651In Stock
9,000On Order

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

651In Stock

9,000On Order

Cut Tape

£0.995

£0.773

£0.56

£0.447

£0.399

Reel

£0.355

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

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

SP3530-01ETG
Littelfuse
1: £0.315
1,251In Stock
70,000On Order

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

1,251In Stock

70,000On Order

Cut Tape

£0.315

£0.195

£0.116

£0.091

View

Reel

£0.05

MouseReel Available

Min.: 1
Mult.: 1

: 10,000

ESD Protection Diodes / TVS Diodes 1.3pF 12A UNIDIRECTIONAL

SP4023-01FTG
Littelfuse
1: £0.646
708In Stock
3,000Expected 30/07/2026

Mfr. Part No.
SP4023-01FTG

Mouser Part No
576-SP4023-01FTG

Littelfuse

ESD Protection Diodes / TVS Diodes 1.3pF 12A UNIDIRECTIONAL

Learn More

Datasheet

708In Stock

3,000Expected 30/07/2026

Cut Tape

£0.646

£0.399

£0.258

£0.196

£0.165

Reel

£0.144

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

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

04611.25ER16
Littelfuse
1: £1.16
1,011In 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

1,011In Stock

Cut Tape

£1.16

£1.05

£0.978

£0.811

View

Reel

£0.492

MouseReel Available

Min.: 1
Mult.: 1

: 2,500

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

SG350Q
Littelfuse
1: £1.07
22,000On Order

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

22,000On Order

Cut Tape

£1.07

£0.818

£0.766

£0.646

£0.56

Reel

£0.538

MouseReel Available

Min.: 1
Mult.: 1

: 2,000

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

SP3003-08ATG
Littelfuse
1: £0.952
38,712On Order

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

38,712On Order

Cut Tape

£0.952

£0.759

£0.585

£0.481

View

Reel

£0.36

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

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

SP4020-01FTG
Littelfuse
1: £0.788
245,056On Order

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

245,056On Order

Cut Tape

£0.788

£0.491

£0.32

£0.247

£0.223

Reel

£0.192

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

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

SP4020-01FTG-C
Littelfuse
1: £0.841
68,882On Order

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

Learn More

Datasheet

68,882On Order

Cut Tape

£0.841

£0.528

£0.346

£0.266

£0.244

Reel

£0.211

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

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

SP4021-01FTG
Littelfuse
1: £0.728
100,320On 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

100,320On Order

Cut Tape

£0.728

£0.455

£0.296

£0.228

£0.205

Reel

£0.173

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

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

SP4021-01FTG-C
Littelfuse
1: £0.743
158,706On Order

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

158,706On Order

Cut Tape

£0.743

£0.464

£0.303

£0.234

£0.212

Reel

£0.192

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

ESD Protection Diodes / TVS Diodes 1.3pF 15A BIDIRECTIONAL

SP4022-01FTG-C
Littelfuse
1: £0.684
38,939In Stock
101,900On Order

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

38,939In Stock

101,900On Order

Cut Tape

£0.684

£0.421

£0.273

£0.217

£0.196

Reel

£0.163

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

Ethernet ESD, Lightning, & Power Fault Protection

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