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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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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (CAD) Filter the results in the table by unit price based on your quantity.	Qty.
ESD Protection Diodes / TVS Diodes 1.3pF 7A UNIDIRECTIONAL SP4024-01FTG Littelfuse 1: $1.01 386,214In Stock	Mfr. Part # SP4024-01FTG Mouser Part # 576-SP4024-01FTG	Littelfuse	ESD Protection Diodes / TVS Diodes 1.3pF 7A UNIDIRECTIONAL Learn More about Littelfuse sp402x arrays	Datasheet	386,214In Stock	Cut Tape $1.01 $0.56 $0.465 $0.377 Reel $0.242 View $0.363 $0.232 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 1.5kW 150V Hi Rel 5% Bi-Directional SMCJ150CA-HRAT7 Littelfuse 1: $34.34 319In Stock	Mfr. Part # SMCJ150CA-HRAT7 Mouser Part # 576-SMCJ150CA-HRAT7	Littelfuse	ESD Protection Diodes / TVS Diodes 1.5kW 150V Hi Rel 5% Bi-Directional Learn More about Littelfuse smcj hr a tvs diodes	Datasheet	319In Stock	Cut Tape $34.34 $27.19 $25.04 $23.30 Reel $23.28 MouseReel Available	Min.: 1 Mult.: 1 : 500
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors STANDARD 90V NOM CG590L Littelfuse 1: $5.03 3,349In Stock	Mfr. Part # CG590L Mouser Part # 576-CG590L	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors STANDARD 90V NOM	Datasheet	3,349In Stock	Cut Tape $5.03 $4.18 $3.86 $3.20 View Reel $1.96 $2.95 $2.65 $2.45 $1.96	Min.: 1 Mult.: 1 : 1,000
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP S.A. STANDARD 600V NOMINAL CG5600L Littelfuse 1: $3.96 1,221In Stock	Mfr. Part # CG5600L Mouser Part # 576-CG5600L	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP S.A. STANDARD 600V NOMINAL	Datasheet	1,221In Stock	Cut Tape $3.96 $3.57 $3.33 $2.76 Reel $1.77 View $2.42 $2.26 $1.92 $1.67	Min.: 1 Mult.: 1 : 1,000
ESD Protection Diodes / TVS Diodes 4 Ch 8kV 0.65pF SPA SP3003-04ATG Littelfuse 1: $3.36 4,775In Stock	Mfr. Part # SP3003-04ATG Mouser Part # 576-SP3003-04ATG	Littelfuse	ESD Protection Diodes / TVS Diodes 4 Ch 8kV 0.65pF SPA Learn More about Littelfuse low capacitance esd spa diodes	Datasheet	4,775In Stock	Cut Tape $3.36 $1.77 $1.45 $1.26 Reel $0.838 View $1.07 $1.02 $0.837 MouseReel Available	Min.: 1 Mult.: 1 : 4,000
ESD Protection Diodes / TVS Diodes 2CH 5V 2A 0.2pF SP3423-02UTG Littelfuse 1: $1.44 8,344In Stock	Mfr. Part # SP3423-02UTG Mouser Part # 576-SP3423-02UTG	Littelfuse	ESD Protection Diodes / TVS Diodes 2CH 5V 2A 0.2pF Learn More about Littelfuse sp3423 tvs diode	Datasheet	8,344In Stock	Cut Tape $1.44 $0.658 $0.524 $0.395 Reel $0.289 View $0.379 $0.258 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 315-525V 2A GDT T/R 2 Term SG420 Littelfuse 1: $2.06 2,525In Stock	Mfr. Part # SG420 Mouser Part # 576-SG420	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 315-525V 2A GDT T/R 2 Term Learn More about Littelfuse sg series sgdt	Datasheet	2,525In Stock	Cut Tape $2.06 $1.54 $1.29 $1.18 Reel $0.916 View $1.11 $1.02 $0.962 $0.90 MouseReel Available	Min.: 1 Mult.: 1 : 2,000
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 263-437V 2A GDT T/R 2 Term SG350 Littelfuse 1: $2.06 1,995In Stock	Mfr. Part # SG350 Mouser Part # 576-SG350	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 263-437V 2A GDT T/R 2 Term Learn More about Littelfuse sg series sgdt	Datasheet	1,995In Stock	Cut Tape $2.06 $1.90 $1.57 $1.45 Reel $0.916 View $1.30 $1.20 $1.11 $0.90 MouseReel Available	Min.: 1 Mult.: 1 : 2,000
Surface Mount Fuses 600VAC 2A .045ohms 461 NANO2 0461002.ER Littelfuse 1: $2.72 24,087In Stock	Mfr. Part # 0461002.ER Mouser Part # 576-0461002.ER	Littelfuse	Surface Mount Fuses 600VAC 2A .045ohms 461 NANO2 Learn More about Littelfuse 461 telelink fuses	Datasheet	24,087In Stock	Cut Tape $2.72 $2.29 $1.90 $1.73 View Reel $1.43 $1.58 $1.45 $1.43 $1.43 MouseReel Available	Min.: 1 Mult.: 1 : 2,500
Surface Mount Fuses 600VAC 1.25A .104ohms 461 NANO2 04611.25ER Littelfuse 1: $2.88 64,551In Stock	Mfr. Part # 04611.25ER Mouser Part # 576-04611.25ER	Littelfuse	Surface Mount Fuses 600VAC 1.25A .104ohms 461 NANO2 Learn More about Littelfuse 461 telelink fuses	Datasheet	64,551In Stock	Cut Tape $2.88 $2.39 $2.09 $1.89 Reel $1.12 View $1.64 $1.47 $1.31 $0.979 MouseReel Available	Min.: 1 Mult.: 1 : 2,500
ESD Protection Diodes / TVS Diodes 3.3V 1uA 30kV ESD Contact LC03-3.3BTG Littelfuse 1: $5.04 33,348In Stock 30,000Expected 2026-12-29	Mfr. Part # LC03-3.3BTG Mouser Part # 576-LC03-3.3BTG	Littelfuse	ESD Protection Diodes / TVS Diodes 3.3V 1uA 30kV ESD Contact Learn More about Littelfuse lc03	Datasheet	33,348In Stock 30,000Expected 2026-12-29	Cut Tape $5.04 $3.30 $2.62 $2.36 Reel $1.54 View $1.90 $1.81 $1.53 MouseReel Available	Min.: 1 Mult.: 1 : 2,500
ESD Protection Diodes / TVS Diodes 4 channels .65pF 8kV SP3001-04JTG Littelfuse 1: $1.89 80,868In Stock 60,000Expected 2026-12-30	Mfr. Part # SP3001-04JTG Mouser Part # 576-SP3001-04JTG	Littelfuse	ESD Protection Diodes / TVS Diodes 4 channels .65pF 8kV	Datasheet	80,868In Stock 60,000Expected 2026-12-30	Cut Tape $1.89 $1.08 $0.877 $0.779 View Reel $0.432 $0.605 $0.518 $0.432 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 2 Ch 8kV 0.65pF SPA SP3003-02JTG Littelfuse 1: $2.15 49,048In Stock	Mfr. Part # SP3003-02JTG Mouser Part # 576-SP3003-02JTG	Littelfuse	ESD Protection Diodes / TVS Diodes 2 Ch 8kV 0.65pF SPA Learn More about Littelfuse low capacitance esd spa diodes	Datasheet	49,048In Stock	Cut Tape $2.15 $1.44 $1.08 $0.958 Reel $0.498 View $0.75 $0.675 $0.492 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 2 channels .65pF SP3003-02XTG Littelfuse 1: $2.45 64,375In Stock 45,000Expected 2027-02-18	Mfr. Part # SP3003-02XTG Mouser Part # 576-SP3003-02XTG	Littelfuse	ESD Protection Diodes / TVS Diodes 2 channels .65pF Learn More about Littelfuse low capacitance esd spa diodes	Datasheet	64,375In Stock 45,000Expected 2027-02-18	Cut Tape $2.45 $1.56 $1.16 $1.03 View Reel $0.619 $0.806 $0.696 $0.619 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 8 Ch 8kV 0.65pF SPA SP3003-08ATG Littelfuse 1: $2.76 51,294In Stock	Mfr. Part # SP3003-08ATG Mouser Part # 576-SP3003-08ATG	Littelfuse	ESD Protection Diodes / TVS Diodes 8 Ch 8kV 0.65pF SPA Learn More about Littelfuse low capacitance esd spa diodes	Datasheet	51,294In Stock	Cut Tape $2.76 $1.76 $1.32 $1.18 Reel $0.77 View $0.93 $0.824 $0.723 $0.684 MouseReel Available	Min.: 1 Mult.: 1 : 4,000
ESD Protection Diodes / TVS Diodes 4 Ch 8kV 6V .45pF SP3010-04UTG Littelfuse 1: $2.23 151,808In Stock	Mfr. Part # SP3010-04UTG Mouser Part # 576-SP3010-04UTG	Littelfuse	ESD Protection Diodes / TVS Diodes 4 Ch 8kV 6V .45pF Learn More about Littelfuse LittelfuseSP3010	Datasheet	151,808In Stock	Cut Tape $2.23 $1.41 $1.05 $0.884 Reel $0.485 View $0.714 $0.654 $0.477 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 6 Ch 8kV 6V 0.4 pF SP3011-06UTG Littelfuse 1: $2.62 50,421In Stock	Mfr. Part # SP3011-06UTG Mouser Part # 576-SP3011-06UTG	Littelfuse	ESD Protection Diodes / TVS Diodes 6 Ch 8kV 6V 0.4 pF	Datasheet	50,421In Stock	Cut Tape $2.62 $1.54 $1.21 $1.05 View Reel $0.596 $0.845 $0.765 $0.596 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 1.3pF 15A BIDIRECTIONAL SP4022-01FTG-C Littelfuse 1: $1.35 106,549In Stock	Mfr. Part # SP4022-01FTG-C Mouser Part # 576-SP4022-01FTG-C	Littelfuse	ESD Protection Diodes / TVS Diodes 1.3pF 15A BIDIRECTIONAL Learn More about Littelfuse sp402x arrays	Datasheet	106,549In Stock	Cut Tape $1.35 $0.616 $0.544 $0.416 $0.412 Reel $0.271 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 3.3V Diode Array SP4042-02UTG Littelfuse 1: $6.62 8,675In Stock 9,000Expected 2026-11-10	Mfr. Part # SP4042-02UTG Mouser Part # 576-SP4042-02UTG	Littelfuse	ESD Protection Diodes / TVS Diodes 3.3V Diode Array Learn More about Littelfuse SP4042 TVS diodes	Datasheet	8,675In Stock 9,000Expected 2026-11-10	Cut Tape $6.62 $4.36 $3.40 $3.08 View Reel $2.12 $2.61 $2.48 $2.12 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes .3pF 10KV 28V 0201 Flipchip SP3130-01WTG Littelfuse 1: $0.907 31,378In Stock	Mfr. Part # SP3130-01WTG Mouser Part # 576-SP3130-01WTG	Littelfuse	ESD Protection Diodes / TVS Diodes .3pF 10KV 28V 0201 Flipchip Learn More about Littelfuse sp3130 diode arrays	Datasheet	31,378In Stock	Cut Tape $0.907 $0.409 $0.36 $0.272 View Reel $0.157 $0.253 $0.235 $0.232 $0.157 MouseReel Available	Min.: 1 Mult.: 1 : 10,000
Surface Mount Fuses 600VAC 0.5A .56ohms 461 NANO2 0461.500ER Littelfuse 1: $3.63 2,457In Stock 10,000On Order	Mfr. Part # 0461.500ER Mouser Part # 576-0461.500ER	Littelfuse	Surface Mount Fuses 600VAC 0.5A .56ohms 461 NANO2 Learn More about Littelfuse 461 telelink fuses	Datasheet	2,457In Stock 10,000On Order On Order Ship Dates Mfr. #: 0461.500ER Stock: 2,457 Can Ship Immediately On Order: 5,000 Expected 2027-02-25 5,000 Expected 2027-03-30 Factory Lead-Time: 19 Weeks	Cut Tape $3.63 $3.27 $3.02 $2.51 View Reel $1.64 $2.32 $2.07 $1.92 $1.77 $1.64 MouseReel Available	Min.: 1 Mult.: 1 : 2,500
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 90V NOMINAL GP S.A. STANDARD CG590LTR Littelfuse 1: $4.22 1,004In Stock	Mfr. Part # CG590LTR Mouser Part # 576-CG590LTR	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 90V NOMINAL GP S.A. STANDARD	Datasheet	1,004In Stock	Cut Tape $4.22 $3.50 $3.24 $2.69 View Reel $2.09 $2.48 $2.23 $2.09	Min.: 1 Mult.: 1 : 1,000
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 75V SMD Ultra Low 0.3pF CG675SM Littelfuse 1: $3.82 1,419In Stock 4,000Expected 2026-12-14	Mfr. Part # CG675SM Mouser Part # 576-CG675SM	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 75V SMD Ultra Low 0.3pF Learn More about Littelfuse CG6 CG7 SMD gas discharge tubes	Datasheet	1,419In Stock 4,000Expected 2026-12-14	Cut Tape $3.82 $3.17 $2.92 $2.43 View Reel $1.87 $2.25 $2.02 $2.00 $1.90 $1.87 MouseReel Available	Min.: 1 Mult.: 1 : 2,000
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 200V Square SG SG200 Littelfuse 1: $2.06 2,016In Stock	Mfr. Part # SG200 Mouser Part # 576-SG200	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 200V Square SG	Datasheet	2,016In Stock	Cut Tape $2.06 $1.90 $1.57 $1.45 View Reel $1.03 $1.30 $1.20 $1.11 $1.03 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: $1.86 18,190In Stock 8,000Expected 2027-03-04	Mfr. Part # SG350Q Mouser Part # 576-SG350Q	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 263-437V GDT T/R 2 Term Learn More about Littelfuse sg series sgdt	Datasheet	18,190In Stock 8,000Expected 2027-03-04	Cut Tape $1.86 $1.71 $1.41 $1.30 View Reel $1.03 $1.17 $1.10 $1.03 MouseReel Available	Min.: 1 Mult.: 1 : 2,000

Ethernet ESD, Lightning, & Power Fault Protection

Types of Circuit Protection

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Ethernet ESD, Lightning, & Power Fault Protection

Types of Circuit Protection