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General Port Protection Solutions

Littelfuse General Port Protection provides a wide array of solutions for power and communication ports. Ports need protection from common electrical hazards such as lightning surges, induced power surges, power cross, electrical fast transient, electrostatic discharge, and short-circuits due to aging wires or installation errors. Littelfuse General Port Protection products are ideal for automotive, building automation, consumer electronics, and industrial applications.

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (USD) Filter the results in the table by unit price based on your quantity.	Qty.
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 3MM 90V 2POLE SMT GDT GTCS23-900M-R01-2 Littelfuse 1: $0.98 46,996In Stock	Mfr. Part No. GTCS23-900M-R01-2 Mouser Part No 650-GTCS23-900MR01-2	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 3MM 90V 2POLE SMT GDT Learn More about Littelfuse gas discharge tubes	Datasheet	46,996In Stock	Cut Tape $0.98 $0.90 $0.747 $0.689 Reel $0.484 View $0.619 $0.571 $0.568 $0.463 MouseReel Available	Min.: 1 Mult.: 1 : 2,000
ESD Protection Diodes / TVS Diodes 1.3pF 7A UNIDIRECTIONAL SP4024-01FTG Littelfuse 1: $0.70 384,890In 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	384,890In Stock	Cut Tape $0.70 $0.389 $0.323 $0.262 Reel $0.168 View $0.252 $0.147 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 6MM 90V 3POLE RADIAL LEADS GDT GTCR36-900M-R10 Littelfuse 1: $3.25 1,192In Stock	Mfr. Part No. GTCR36-900M-R10 Mouser Part No 650-GTCR36-900M-R10	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 6MM 90V 3POLE RADIAL LEADS GDT Learn More about Littelfuse gas discharge tubes	Datasheet	1,192In Stock	$3.25 $2.70 $2.49 $2.07 View $1.84 $1.71 $1.58 $1.45 $1.41	Min.: 1 Mult.: 1
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP CG2 SMT TYPE CG75MSTR Littelfuse 1: $3.52 1,380In Stock	Mfr. Part No. CG75MSTR Mouser Part No 576-CG75MSTR	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP CG2 SMT TYPE	Datasheet	1,380In Stock	Cut Tape $3.52 $2.92 $2.70 $2.24 Reel $1.70 View $2.07 $1.90 $1.54 MouseReel Available	Min.: 1 Mult.: 1 : 500
Thyristor Surge Protection Devices - TSPD 22V 500A DO214 2L SIDACtor Bi P0220SCLRP Littelfuse 1: $1.85 4,574In Stock	Mfr. Part No. P0220SCLRP Mouser Part No 576-P0220SCLRP	Littelfuse	Thyristor Surge Protection Devices - TSPD 22V 500A DO214 2L SIDACtor Bi Learn More about Littelfuse p 0s lrp thyristors	Datasheet	4,574In Stock	Cut Tape $1.85 $1.18 $0.787 $0.622 $0.569 Reel $0.504 MouseReel Available	Min.: 1 Mult.: 1 : 2,500
Varistors 23V 20mm Epoxy UltraMOV V20E23P Littelfuse 1: $1.01 12,240In Stock	Mfr. Part No. V20E23P Mouser Part No 576-V20E23P	Littelfuse	Varistors 23V 20mm Epoxy UltraMOV Learn More about Littelfuse ultramov 20mm varistors	Datasheet	12,240In Stock	$1.01 $0.655 $0.576 $0.539 View $0.515 $0.481 $0.446	Min.: 1 Mult.: 1
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 3MM 200V 2POLE CHIP TYPE SMT GTCC23-201M-R01-2 Littelfuse 1: $1.13 2,341In Stock	Mfr. Part No. GTCC23-201M-R01-2 Mouser Part No 650-GTCC23-201MR01-2	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 3MM 200V 2POLE CHIP TYPE SMT Learn More about Littelfuse gas discharge tubes	Datasheet	2,341In Stock	Cut Tape $1.13 $1.04 $0.859 $0.793 Reel $0.54 View $0.662 $0.558 $0.531 MouseReel Available	Min.: 1 Mult.: 1 : 2,000
Thyristor Surge Protection Devices - TSPD 50A 170V P1800SALRP Littelfuse 1: $1.58 4,000In Stock	Mfr. Part No. P1800SALRP Mouser Part No 576-P1800SALRP	Littelfuse	Thyristor Surge Protection Devices - TSPD 50A 170V Learn More about Littelfuse p 0s lrp thyristors	Datasheet	4,000In Stock	Cut Tape $1.58 $0.992 $0.501 $0.43 Reel $0.43 MouseReel Available	Min.: 1 Mult.: 1 : 2,500
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 8MM 2100V 2POLE AXIAL LEAD HV GDT GTCA28-212M-R03 Littelfuse 1: $4.31 1,456In Stock	Mfr. Part No. GTCA28-212M-R03 Mouser Part No 650-GTCA28-212M-R03	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 8MM 2100V 2POLE AXIAL LEAD HV GDT Learn More about Littelfuse GTCA28 gdts	Datasheet	1,456In Stock	$4.31 $3.58 $3.30 $2.74 View $2.53 $2.27 $2.09 $2.06 $1.93	Min.: 1 Mult.: 1
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 8MM 90V 3POLE AXIAL LEADS GDT GTCA38-900M-R10 Littelfuse 1: $3.07 1,011In Stock	Mfr. Part No. GTCA38-900M-R10 Mouser Part No 650-GTCA38-900M-R10	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 8MM 90V 3POLE AXIAL LEADS GDT Learn More about Littelfuse gas discharge tubes	Datasheet	1,011In Stock	$3.07 $2.55 $2.36 $1.96 View $1.81 $1.62 $1.50 $1.37 $1.33	Min.: 1 Mult.: 1
Cartridge Fuses 250V 4A Slo-Blo 0313004.MXP Littelfuse 1: $1.49 5,974In Stock	Mfr. Part No. 0313004.MXP Mouser Part No 576-0313004.MXP	Littelfuse	Cartridge Fuses 250V 4A Slo-Blo Learn More about Littelfuse 6x32 3ab3ag fuseholders	Datasheet	5,974In Stock	$1.49 $1.38 $1.14 $1.05 View $0.945 $0.871 $0.786 $0.784	Min.: 1 Mult.: 1
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP S.A. STANDARD 600V NOMINAL CG5600L Littelfuse 1: $2.75 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 $2.75 $2.48 $2.31 $1.92 Reel $1.23 View $1.68 $1.57 $1.39 $1.16	Min.: 1 Mult.: 1 : 1,000
Varistors 5.5 VDC .05J 21V-CL 185PF P V5.5MLA0402NR Littelfuse 1: $0.38 47,031In Stock 30,000Expected 22/12/2026	Mfr. Part No. V5.5MLA0402NR Mouser Part No 576-V5.5MLA0402NR	Littelfuse	Varistors 5.5 VDC .05J 21V-CL 185PF P Learn More about Littelfuse Littelfuse Varistors	Datasheet	47,031In Stock 30,000Expected 22/12/2026	Cut Tape $0.38 $0.235 $0.203 $0.188 View Reel $0.13 $0.174 $0.154 $0.145 $0.141 $0.13 MouseReel Available	Min.: 1 Mult.: 1 : 10,000
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 8MM 3000V 2POLE AXIAL LEAD HV GDT GTCA28-302M-R03 Littelfuse 1: $4.31 978In Stock	Mfr. Part No. GTCA28-302M-R03 Mouser Part No 650-GTCA28-302M-R03	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 8MM 3000V 2POLE AXIAL LEAD HV GDT Learn More about Littelfuse GTCA28 gdts	Datasheet	978In Stock	$4.31 $3.11 $2.97 $2.48 View $2.24 $2.12 $2.07 $1.93	Min.: 1 Mult.: 1
Thyristor Surge Protection Devices - TSPD 100A 220V P2600SBLRP Littelfuse 1: $1.89 5,000In Stock	Mfr. Part No. P2600SBLRP Mouser Part No 576-P2600SBLRP	Littelfuse	Thyristor Surge Protection Devices - TSPD 100A 220V Learn More about Littelfuse p 0s lrp thyristors	Datasheet	5,000In Stock	Cut Tape $1.89 $0.94 $0.672 $0.508 $0.474 Reel $0.467 MouseReel Available	Min.: 1 Mult.: 1 : 2,500
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 315-525V 2A GDT T/R 2 Term SG420 Littelfuse 1: $1.43 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 $1.43 $1.07 $0.899 $0.819 Reel $0.636 View $0.774 $0.708 $0.668 $0.625 MouseReel Available	Min.: 1 Mult.: 1 : 2,000
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP 5X5 90V Minitube 2 Term SL0902A090SM Littelfuse 1: $2.69 6,298In Stock	Mfr. Part No. SL0902A090SM Mouser Part No 576-SL0902A090SM	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP 5X5 90V Minitube 2 Term Learn More about Littelfuse sl0902a cg5 gdts	Datasheet	6,298In Stock	Cut Tape $2.69 $2.28 $2.10 $1.74 View Reel $1.20 $1.61 $1.45 $1.20 $1.20 MouseReel Available	Min.: 1 Mult.: 1 : 900
ESD Protection Diodes / TVS Diodes 1.5kW 130V 5% Uni-Directional SMCJ130A Littelfuse 1: $0.91 8,432In Stock	Mfr. Part No. SMCJ130A Mouser Part No 576-SMCJ130A	Littelfuse	ESD Protection Diodes / TVS Diodes 1.5kW 130V 5% Uni-Directional Learn More about Littelfuse smcj tvs 1500w diodes	Datasheet	8,432In Stock	Cut Tape $0.91 $0.415 $0.339 $0.263 Reel $0.18 View $0.252 $0.158 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 8MM 75V 2POLE SMT GDT GTCS28-750M-R05-2 Littelfuse 1: $3.01 1,773In Stock	Mfr. Part No. GTCS28-750M-R05-2 Mouser Part No 650-GTCS28-750MR05-2	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 8MM 75V 2POLE SMT GDT Learn More about Littelfuse gas discharge tubes	Datasheet	1,773In Stock	Cut Tape $3.01 $2.83 $2.68 $2.16 Reel $1.43 View $1.83 $1.79 $1.34 $1.22 MouseReel Available	Min.: 1 Mult.: 1 : 500
Thyristor Surge Protection Devices - TSPD 500A 90V P1100SCLRP Littelfuse 1: $1.85 20,065In Stock	Mfr. Part No. P1100SCLRP Mouser Part No 576-P1100SCLRP	Littelfuse	Thyristor Surge Protection Devices - TSPD 500A 90V Learn More about Littelfuse p 0s lrp thyristors	Datasheet	20,065In Stock	Cut Tape $1.85 $1.18 $0.651 $0.541 $0.504 Reel $0.504 MouseReel Available	Min.: 1 Mult.: 1 : 2,500
ESD Protection Diodes / TVS Diodes 1.5kW 24V 5% Bi-Directional SMCJ24CA Littelfuse 1: $0.97 17,811In Stock	Mfr. Part No. SMCJ24CA Mouser Part No 576-SMCJ24CA	Littelfuse	ESD Protection Diodes / TVS Diodes 1.5kW 24V 5% Bi-Directional Learn More about Littelfuse smcj tvs 1500w diodes	Datasheet	17,811In Stock	Cut Tape $0.97 $0.446 $0.394 $0.303 Reel $0.21 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
Varistors RADIAL VARISTOR 7MM ROHS/LEAD FREE V07E25PL2T Littelfuse 1: $0.29 9,292In Stock	Mfr. Part No. V07E25PL2T Mouser Part No 576-V07E25PL2T	Littelfuse	Varistors RADIAL VARISTOR 7MM ROHS/LEAD FREE Learn More about Littelfuse ultramov 7mm varistors	Datasheet	9,292In Stock	Cut Tape $0.29 $0.20 Reel $0.182 $0.18	Min.: 1 Mult.: 1 : 1,000
Cartridge Fuses 250V .15A Slo-Blo 3AG 0313.150MXP Littelfuse 1: $2.77 1,059In Stock	Mfr. Part No. 0313.150MXP Mouser Part No 576-0313.150MXP	Littelfuse	Cartridge Fuses 250V .15A Slo-Blo 3AG Learn More about Littelfuse 6x32 3ab3ag fuseholders	Datasheet	1,059In Stock	$2.77 $2.55 $2.12 $1.96 View $1.76 $1.62 $1.48 $1.45	Min.: 1 Mult.: 1
Cartridge Fuses 250V .4A Slo-Blo 3AG 0313.400MXP Littelfuse 1: $1.68 1,675In Stock	Mfr. Part No. 0313.400MXP Mouser Part No 576-0313.400MXP	Littelfuse	Cartridge Fuses 250V .4A Slo-Blo 3AG Learn More about Littelfuse 6x32 3ab3ag fuseholders	Datasheet	1,675In Stock	$1.68 $1.55 $1.29 $1.19 View $1.07 $0.981 $0.903 $0.841	Min.: 1 Mult.: 1
Cartridge Fuses 32V 30A Slo-Blo 0313030.MXP Littelfuse 1: $1.86 1,732In Stock	Mfr. Part No. 0313030.MXP Mouser Part No 576-0313030.MXP	Littelfuse	Cartridge Fuses 32V 30A Slo-Blo Learn More about Littelfuse 6x32 3ab3ag fuseholders	Datasheet	1,732In Stock	$1.86 $1.72 $1.43 $1.32 View $1.18 $1.09 $1.00 $0.94	Min.: 1 Mult.: 1