Circuit Protection – Mouser Taiwan

.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: 308

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 #

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

SG75
Littelfuse
1: NT$51.27
6,232In Stock
18,000On Order

Mfr. Part #
SG75

Mouser Part #
576-SG75

Littelfuse

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

Learn More

Datasheet

6,232In Stock

18,000On Order

Cut Tape

NT$51.27

NT$39.08

NT$32.41

NT$29.86

NT$26.64

Reel

NT$25.67

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: NT$51.27
4,378In Stock
6,000Expected 10/28/2026

Mfr. Part #
SG90

Mouser Part #
576-SG90

Littelfuse

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

Learn More

Datasheet

4,378In Stock

6,000Expected 10/28/2026

Cut Tape

NT$51.27

NT$39.08

NT$32.41

NT$29.86

NT$26.71

Reel

NT$25.67

MouseReel Available

Min.: 1
Mult.: 1

: 2,000

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

SL0902A090SM
Littelfuse
1: NT$81.74
6,308In Stock

Mfr. Part #
SL0902A090SM

Mouser Part #
576-SL0902A090SM

Littelfuse

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

Learn More

Datasheet

6,308In Stock

Cut Tape

NT$81.74

NT$62.38

NT$51.98

NT$43.02

Reel

NT$43.02

MouseReel Available

Min.: 1
Mult.: 1

: 900

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

SL0902A230SM
Littelfuse
1: NT$81.74
3,521In Stock

Mfr. Part #
SL0902A230SM

Mouser Part #
576-SL0902A230SM

Littelfuse

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

Learn More

Datasheet

3,521In Stock

Cut Tape

NT$81.74

NT$62.38

NT$55.57

NT$47.68

Reel

NT$43.02

MouseReel Available

Min.: 1
Mult.: 1

: 900

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

SP0504SHTG
Littelfuse
1: NT$34.77
31,288In Stock

Mfr. Part #
SP0504SHTG

Mouser Part #
576-SP0504SHTG

Littelfuse

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

Learn More

Datasheet

31,288In Stock

Cut Tape

NT$34.77

NT$15.92

NT$14.05

NT$10.79

Reel

NT$9.89

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

ESD Protection Diodes / TVS Diodes 75A 30KV 3.3V Lightning Protection

SP2502LBTG
Littelfuse
1: NT$116.87
3,770In Stock

Mfr. Part #
SP2502LBTG

Mouser Part #
576-SP2502LBTG

Littelfuse

ESD Protection Diodes / TVS Diodes 75A 30KV 3.3V Lightning Protection

Learn More

Datasheet

3,770In Stock

Cut Tape

NT$116.87

NT$68.12

NT$50.91

NT$43.02

Reel

NT$34.49

View

MouseReel Available

Min.: 1
Mult.: 1

: 2,500

ESD Protection Diodes / TVS Diodes 2 Ch 8KV 5V .65pF Low Cap

SP3003-02UTG
Littelfuse
1: NT$49.83
10,875In Stock

Mfr. Part #
SP3003-02UTG

Mouser Part #
576-SP3003-02UTG

Littelfuse

ESD Protection Diodes / TVS Diodes 2 Ch 8KV 5V .65pF Low Cap

Learn More

Datasheet

10,875In Stock

Cut Tape

NT$49.83

NT$26.03

NT$20.58

NT$16.02

Reel

NT$11.62

NT$11.29

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

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

SP3004-04XTG
Littelfuse
1: NT$44.45
6,596In Stock

Mfr. Part #
SP3004-04XTG

Mouser Part #
576-SP3004-04XTG

Littelfuse

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

Datasheet

6,596In Stock

Cut Tape

NT$44.45

NT$21.40

NT$17.10

NT$13.59

NT$12.94

Reel

NT$10.47

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

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

SP3019-04HTG
Littelfuse
1: NT$36.57
13,256In Stock

Mfr. Part #
SP3019-04HTG

Mouser Part #
576-SP3019-04HTG

Littelfuse

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

Learn More

Datasheet

13,256In Stock

Cut Tape

NT$36.57

NT$22.76

NT$14.88

NT$11.47

NT$10.40

Reel

NT$7.92

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

ESD Protection Diodes / TVS Diodes 0.35pF 20kV BIDIRECTIONAL

SP3022-01ETG
Littelfuse
1: NT$21.15
28,311In Stock

Mfr. Part #
SP3022-01ETG

Mouser Part #
576-SP3022-01ETG

Littelfuse

ESD Protection Diodes / TVS Diodes 0.35pF 20kV BIDIRECTIONAL

Learn More

Datasheet

28,311In Stock

Cut Tape

NT$21.15

NT$10.86

NT$8.64

NT$6.88

View

Reel

NT$4.27

MouseReel Available

Min.: 1
Mult.: 1

: 10,000

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

SP3118-01ETG
Littelfuse
1: NT$21.15
67,221In Stock

Mfr. Part #
SP3118-01ETG

Mouser Part #
576-SP3118-01ETG

Littelfuse

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

Learn More

Datasheet

67,221In Stock

Cut Tape

NT$21.15

NT$10.18

NT$8.46

NT$6.74

View

Reel

NT$3.91

MouseReel Available

Min.: 1
Mult.: 1

: 10,000

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

SP3374NUTG
Littelfuse
1: NT$83.89
2,615In Stock
18,000On Order

Mfr. Part #
SP3374NUTG

Mouser Part #
576-SP3374NUTG

Littelfuse

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

Learn More

Datasheet

2,615In Stock

18,000On Order

Cut Tape

NT$83.89

NT$43.02

NT$36.93

NT$30.83

NT$26.89

Reel

NT$25.81

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

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

SP3400-02UTG
Littelfuse
1: NT$38.72
26,544In Stock

Mfr. Part #
SP3400-02UTG

Mouser Part #
576-SP3400-02UTG

Littelfuse

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

Learn More

Datasheet

26,544In Stock

Cut Tape

NT$38.72

NT$18.25

NT$14.66

NT$11.58

NT$11.04

Reel

NT$8.50

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

ESD Protection Diodes / TVS Diodes 0.2pF 22kV DFN-5

SP3422-04UTG
Littelfuse
1: NT$17.57
49,384In Stock

Mfr. Part #
SP3422-04UTG

Mouser Part #
576-SP3422-04UTG

Littelfuse

ESD Protection Diodes / TVS Diodes 0.2pF 22kV DFN-5

Learn More

Datasheet

49,384In Stock

Cut Tape

NT$17.57

NT$9.21

NT$7.13

NT$6.02

Reel

NT$3.80

View

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

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

SP3423-02UTG
Littelfuse
1: NT$31.19
8,818In Stock

Mfr. Part #
SP3423-02UTG

Mouser Part #
576-SP3423-02UTG

Littelfuse

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

Learn More

Datasheet

8,818In Stock

Cut Tape

NT$31.19

NT$16.38

NT$13.05

NT$10.22

NT$9.72

Reel

NT$7.35

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

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

SP3522-01ETG
Littelfuse
1: NT$15.42
119,093In Stock

Mfr. Part #
SP3522-01ETG

Mouser Part #
576-SP3522-01ETG

Littelfuse

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

Learn More

Datasheet

119,093In Stock

Cut Tape

NT$15.42

NT$7.21

NT$5.52

NT$4.23

Reel

NT$2.47

View

MouseReel Available

Min.: 1
Mult.: 1

: 10,000

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

SP3522-01UTG
Littelfuse
1: NT$13.98
42,329In Stock

Mfr. Part #
SP3522-01UTG

Mouser Part #
576-SP3522-01UTG

Littelfuse

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

Learn More

Datasheet

42,329In Stock

Cut Tape

NT$13.98

NT$6.20

NT$5.34

NT$4.02

View

Reel

NT$2.01

MouseReel Available

Min.: 1
Mult.: 1

: 15,000

ESD Protection Diodes / TVS Diodes 1.3pF 12A BIDIRECTIONAL

SP4023-01FTG-C
Littelfuse
1: NT$25.81
18,284In Stock
36,000Expected 11/9/2026

Mfr. Part #
SP4023-01FTG-C

Mouser Part #
576-SP4023-01FTG-C

Littelfuse

ESD Protection Diodes / TVS Diodes 1.3pF 12A BIDIRECTIONAL

Learn More

Datasheet

18,284In Stock

36,000Expected 11/9/2026

Cut Tape

NT$25.81

NT$18.39

NT$12.62

NT$10.58

Reel

NT$7.46

View

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

ESD Protection Diodes / TVS Diodes 1.5pF 30kV

SP4044-04ATG
Littelfuse
1: NT$48.04
8,775In Stock

Mfr. Part #
SP4044-04ATG

Mouser Part #
576-SP4044-04ATG

Littelfuse

ESD Protection Diodes / TVS Diodes 1.5pF 30kV

Learn More

Datasheet

8,775In Stock

Cut Tape

NT$48.04

NT$31.33

NT$26.28

NT$21.62

View

Reel

NT$15.02

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

ESD Protection Diodes / TVS Diodes 1.5pF 30kV

SP4045-04ATG
Littelfuse
1: NT$44.45
8,907In Stock
8,000Expected 10/5/2026

Mfr. Part #
SP4045-04ATG

Mouser Part #
576-SP4045-04ATG

Littelfuse

ESD Protection Diodes / TVS Diodes 1.5pF 30kV

Learn More

Datasheet

8,907In Stock

8,000Expected 10/5/2026

Cut Tape

NT$44.45

NT$29.40

NT$24.20

NT$20.15

Reel

NT$13.84

View

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

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

SP4060-08ATG
Littelfuse
1: NT$64.53
4,802In Stock

Mfr. Part #
SP4060-08ATG

Mouser Part #
576-SP4060-08ATG

Littelfuse

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

Learn More

Datasheet

4,802In Stock

Cut Tape

NT$64.53

NT$41.23

NT$30.83

NT$26.89

Reel

NT$19.29

View

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

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

SP3003-04JTG
Littelfuse
1: NT$44.45
2,793In Stock
21,000On Order

Mfr. Part #
SP3003-04JTG

Mouser Part #
576-SP3003-04JTG

Littelfuse

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

Learn More

Datasheet

2,793In Stock

21,000On Order

Cut Tape

NT$44.45

NT$21.83

NT$18.32

NT$14.27

Reel

NT$9.93

View

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

ESD Protection Diodes / TVS Diodes 4 channels .65pF

SP3003-04XTG
Littelfuse
1: NT$45.53
1,590In Stock
9,000Expected 8/20/2026

Mfr. Part #
SP3003-04XTG

Mouser Part #
576-SP3003-04XTG

Littelfuse

ESD Protection Diodes / TVS Diodes 4 channels .65pF

Learn More

Datasheet

1,590In Stock

9,000Expected 8/20/2026

Cut Tape

NT$45.53

NT$28.61

NT$18.79

NT$15.70

Reel

NT$11.47

View

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

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

SP3006-02XTG
Littelfuse
1: NT$45.53
1,809In Stock
3,000On Order

Mfr. Part #
SP3006-02XTG

Mouser Part #
576-SP3006-02XTG

Littelfuse

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

Datasheet

1,809In Stock

3,000On Order

Cut Tape

NT$45.53

NT$30.33

NT$23.63

NT$19.43

NT$16.67

Reel

NT$15.42

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

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

SP3118-01WTG
Littelfuse
1: NT$20.43
9,311In Stock

Mfr. Part #
SP3118-01WTG

Mouser Part #
576-SP3118-01WTG

Littelfuse

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

Learn More

Datasheet

9,311In Stock

Cut Tape

NT$20.43

NT$10.18

NT$8.10

NT$6.45

View

Reel

NT$3.91

MouseReel Available

Min.: 1
Mult.: 1

: 10,000

Ethernet ESD, Lightning, & Power Fault Protection

Types of Circuit Protection

Customer Service Office

Company

Resources

Support