Circuit Protection – Mouser Hong Kong

.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: 309

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; }

Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (HKD) 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: HK$5.18 386,080In Stock	Mfr. Part No. SP4024-01FTG Mouser Part No 576-SP4024-01FTG	Littelfuse	ESD Protection Diodes / TVS Diodes 1.3pF 7A UNIDIRECTIONAL Learn More about Littelfuse sp402x arrays	Datasheet	386,080In Stock	Cut Tape HK$5.18 HK$2.82 HK$2.52 HK$2.15 Reel HK$1.38 View HK$2.07 HK$1.37 HK$1.29 HK$1.27 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: HK$196.05 319In Stock	Mfr. Part No. SMCJ150CA-HRAT7 Mouser Part No 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 HK$196.05 HK$155.19 HK$142.95 HK$133.00 Reel HK$132.92 View Quote MouseReel Available	Min.: 1 Mult.: 1 : 500
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 315-525V 2A GDT T/R 2 Term SG420 Littelfuse 1: HK$8.96 2,525In Stock	Mfr. Part No. SG420 Mouser Part No 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 HK$8.96 HK$7.64 HK$6.62 HK$6.19 View Reel HK$5.14 HK$5.81 HK$5.46 HK$5.19 HK$5.14 MouseReel Available	Min.: 1 Mult.: 1 : 2,000
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP S.A. STANDARD 600V NOMINAL CG5600L Littelfuse 1: HK$21.87 1,221In Stock	Mfr. Part No. CG5600L Mouser Part No 576-CG5600L	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP S.A. STANDARD 600V NOMINAL	Datasheet	1,221In Stock	Cut Tape HK$21.87 HK$19.40 HK$18.00 HK$15.04 View Reel HK$9.54 HK$13.40 HK$12.33 HK$10.44 HK$9.54	Min.: 1 Mult.: 1 : 1,000
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors STANDARD 90V NOM CG590L Littelfuse 1: HK$28.69 2,349In Stock	Mfr. Part No. CG590L Mouser Part No 576-CG590L	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors STANDARD 90V NOM	Datasheet	2,349In Stock	Cut Tape HK$28.69 HK$23.84 HK$22.03 HK$18.25 View Reel HK$11.18 HK$16.85 HK$15.12 HK$13.97 HK$11.18	Min.: 1 Mult.: 1 : 1,000
ESD Protection Diodes / TVS Diodes 4 Ch 8kV 0.65pF SPA SP3003-04ATG Littelfuse 1: HK$19.15 4,775In 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 about Littelfuse low capacitance esd spa diodes	Datasheet	4,775In Stock	Cut Tape HK$19.15 HK$9.12 HK$7.56 HK$6.67 View Reel HK$4.78 HK$5.80 HK$5.71 HK$4.78 MouseReel Available	Min.: 1 Mult.: 1 : 4,000
ESD Protection Diodes / TVS Diodes 2CH 5V 2A 0.2pF SP3423-02UTG Littelfuse 1: HK$6.33 344In 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 about Littelfuse sp3423 tvs diode	Datasheet	344In Stock	Cut Tape HK$6.33 HK$3.26 HK$2.73 HK$2.05 Reel HK$1.57 View HK$2.01 HK$1.47 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 263-437V 2A GDT T/R 2 Term SG350 Littelfuse 1: HK$11.75 1,995In Stock	Mfr. Part No. SG350 Mouser Part No 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 HK$11.75 HK$10.85 HK$8.96 HK$8.30 Reel HK$5.23 View HK$7.43 HK$6.86 HK$6.35 HK$5.14 MouseReel Available	Min.: 1 Mult.: 1 : 2,000
Surface Mount Fuses 600VAC 2A .045ohms 461 NANO2 0461002.ER Littelfuse 1: HK$15.54 24,087In Stock	Mfr. Part No. 0461002.ER Mouser Part No 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 HK$15.54 HK$13.07 HK$11.26 HK$10.36 View Reel HK$8.15 HK$9.54 HK$8.80 HK$8.38 HK$8.15 MouseReel Available	Min.: 1 Mult.: 1 : 2,500
Surface Mount Fuses 600VAC 1.25A .104ohms 461 NANO2 04611.25ER Littelfuse 1: HK$16.44 64,186In Stock	Mfr. Part No. 04611.25ER Mouser Part No 576-04611.25ER	Littelfuse	Surface Mount Fuses 600VAC 1.25A .104ohms 461 NANO2 Learn More about Littelfuse 461 telelink fuses	Datasheet	64,186In Stock	Cut Tape HK$16.44 HK$14.55 HK$12.91 HK$11.75 Reel HK$6.39 View HK$10.03 HK$8.96 HK$7.90 HK$5.59 MouseReel Available	Min.: 1 Mult.: 1 : 2,500
ESD Protection Diodes / TVS Diodes 3.3V 1uA 30kV ESD Contact LC03-3.3BTG Littelfuse 1: HK$28.36 29,848In Stock 30,000Expected 28/1/2027	Mfr. Part No. LC03-3.3BTG Mouser Part No 576-LC03-3.3BTG	Littelfuse	ESD Protection Diodes / TVS Diodes 3.3V 1uA 30kV ESD Contact Learn More about Littelfuse lc03	Datasheet	29,848In Stock 30,000Expected 28/1/2027	Cut Tape HK$28.36 HK$18.58 HK$14.96 HK$13.32 Reel HK$8.71 View HK$10.60 HK$8.55 MouseReel Available	Min.: 1 Mult.: 1 : 2,500
ESD Protection Diodes / TVS Diodes 4 channels .65pF 8kV SP3001-04JTG Littelfuse 1: HK$10.77 79,526In Stock 60,000Expected 30/12/2026	Mfr. Part No. SP3001-04JTG Mouser Part No 576-SP3001-04JTG	Littelfuse	ESD Protection Diodes / TVS Diodes 4 channels .65pF 8kV	Datasheet	79,526In Stock 60,000Expected 30/12/2026	Cut Tape HK$10.77 HK$6.17 HK$5.01 HK$4.45 View Reel HK$2.47 HK$3.45 HK$2.96 HK$2.47 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 4 channels 1.1pF 15kV SP3002-04JTG Littelfuse 1: HK$10.36 201,218In Stock	Mfr. Part No. SP3002-04JTG Mouser Part No 576-SP3002-04JTG	Littelfuse	ESD Protection Diodes / TVS Diodes 4 channels 1.1pF 15kV	Datasheet	201,218In Stock	Cut Tape HK$10.36 HK$4.81 HK$4.27 HK$3.30 Reel HK$2.29 HK$2.16 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 2 Ch 8kV 0.65pF SPA SP3003-02JTG Littelfuse 1: HK$12.25 48,848In Stock	Mfr. Part No. SP3003-02JTG Mouser Part No 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	48,848In Stock	Cut Tape HK$12.25 HK$8.22 HK$6.14 HK$5.47 Reel HK$2.84 View HK$4.28 HK$3.86 HK$2.81 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 2 channels .65pF SP3003-02XTG Littelfuse 1: HK$13.97 62,875In Stock 45,000Expected 18/2/2027	Mfr. Part No. SP3003-02XTG Mouser Part No 576-SP3003-02XTG	Littelfuse	ESD Protection Diodes / TVS Diodes 2 channels .65pF Learn More about Littelfuse low capacitance esd spa diodes	Datasheet	62,875In Stock 45,000Expected 18/2/2027	Cut Tape HK$13.97 HK$8.88 HK$6.61 HK$5.89 View Reel HK$3.53 HK$4.60 HK$3.97 HK$3.53 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 8 Ch 8kV 0.65pF SPA SP3003-08ATG Littelfuse 1: HK$15.78 51,294In 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 about Littelfuse low capacitance esd spa diodes	Datasheet	51,294In Stock	Cut Tape HK$15.78 HK$10.03 HK$7.53 HK$6.72 Reel HK$4.40 View HK$5.31 HK$4.70 HK$4.13 HK$3.90 MouseReel Available	Min.: 1 Mult.: 1 : 4,000
ESD Protection Diodes / TVS Diodes 4 Ch 8kV 6V .45pF SP3010-04UTG Littelfuse 1: HK$12.74 150,808In Stock	Mfr. Part No. SP3010-04UTG Mouser Part No 576-SP3010-04UTG	Littelfuse	ESD Protection Diodes / TVS Diodes 4 Ch 8kV 6V .45pF Learn More about Littelfuse LittelfuseSP3010	Datasheet	150,808In Stock	Cut Tape HK$12.74 HK$8.02 HK$5.98 HK$5.05 Reel HK$2.77 View HK$4.08 HK$3.73 HK$2.72 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 6 Ch 8kV 6V 0.4 pF SP3011-06UTG Littelfuse 1: HK$14.96 51,221In Stock	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	51,221In Stock	Cut Tape HK$14.96 HK$8.80 HK$6.92 HK$6.02 View Reel HK$3.40 HK$4.83 HK$4.36 HK$3.40 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 3.3V Diode Array SP4042-02UTG Littelfuse 1: HK$37.81 8,675In Stock 9,000Expected 13/11/2026	Mfr. Part No. SP4042-02UTG Mouser Part No 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 13/11/2026	Cut Tape HK$37.81 HK$24.91 HK$19.40 HK$17.59 View Reel HK$12.08 HK$14.88 HK$13.97 HK$12.08 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes .3pF 10KV 28V 0201 Flipchip SP3130-01WTG Littelfuse 1: HK$4.60 31,378In 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 about Littelfuse sp3130 diode arrays	Datasheet	31,378In Stock	Cut Tape HK$4.60 HK$2.12 HK$1.88 HK$1.45 View Reel HK$0.896 HK$1.40 HK$1.34 HK$1.32 HK$0.896 MouseReel Available	Min.: 1 Mult.: 1 : 10,000
Surface Mount Fuses 600VAC 0.5A .56ohms 461 NANO2 0461.500ER Littelfuse 1: HK$18.66 2,457In Stock 20,000On Order	Mfr. Part No. 0461.500ER Mouser Part No 576-0461.500ER	Littelfuse	Surface Mount Fuses 600VAC 0.5A .56ohms 461 NANO2 Learn More about Littelfuse 461 telelink fuses	Datasheet	2,457In Stock 20,000On Order On Order Ship Dates Mfr. No: 0461.500ER Stock: 2,457 Can Dispatch Immediately On Order: 5,000 Expected 6/1/2027 5,000 Expected 30/3/2027 10,000 Expected 15/4/2027 Factory Lead Time: 19 Weeks	Cut Tape HK$18.66 HK$17.26 HK$14.30 HK$13.23 View Reel HK$9.37 HK$11.84 HK$10.93 HK$10.11 HK$9.37 MouseReel Available	Min.: 1 Mult.: 1 : 2,500
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 90V NOMINAL GP S.A. STANDARD CG590LTR Littelfuse 1: HK$24.08 1,004In Stock	Mfr. Part No. CG590LTR Mouser Part No 576-CG590LTR	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 90V NOMINAL GP S.A. STANDARD	Datasheet	1,004In Stock	Cut Tape HK$24.08 HK$19.97 HK$18.50 HK$15.37 View Reel HK$11.92 HK$14.14 HK$12.74 HK$11.92	Min.: 1 Mult.: 1 : 1,000
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 75V SMD Ultra Low 0.3pF CG675SM Littelfuse 1: HK$21.78 1,429In Stock 4,000Expected 14/12/2026	Mfr. Part No. CG675SM Mouser Part No 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	1,429In Stock 4,000Expected 14/12/2026	Cut Tape HK$21.78 HK$18.08 HK$16.69 HK$13.89 View Reel HK$10.69 HK$12.82 HK$11.51 HK$11.43 HK$10.85 HK$10.69 MouseReel Available	Min.: 1 Mult.: 1 : 2,000
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 105-195V 2A GDT T/R 2 Term SG150 Littelfuse 1: HK$11.18 2,977In Stock	Mfr. Part No. SG150 Mouser Part No 576-SG150	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 105-195V 2A GDT T/R 2 Term Learn More about Littelfuse sg series sgdt	Datasheet	2,977In Stock	Cut Tape HK$11.18 HK$10.36 HK$8.55 HK$7.89 View Reel HK$5.89 HK$7.09 HK$6.67 HK$6.49 HK$5.89 MouseReel Available	Min.: 1 Mult.: 1 : 2,000
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 200V Square SG SG200 Littelfuse 1: HK$11.75 2,016In Stock	Mfr. Part No. SG200 Mouser Part No 576-SG200	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 200V Square SG	Datasheet	2,016In Stock	Cut Tape HK$11.75 HK$10.85 HK$8.96 HK$8.30 View Reel HK$5.89 HK$7.43 HK$6.85 HK$6.31 HK$5.89 MouseReel Available	Min.: 1 Mult.: 1 : 2,000