Gas Discharge Tubes

Littelfuse Gas Discharge Tubes (GDTs) are designed for high-voltage transient surge protection in small devices. Littelfuse GDTs are designed to dissipate large amounts of energy and are ideal for lightning surge protection. GDTs are widely applied to outdoor telecommunications equipment. These Littelfuse devices are available in leaded and surface-mount configurations.

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Description Datasheet Availability Pricing (SGD) Filter the results in the table by unit price based on your quantity.
Qty. RoHS ECAD Model Series
Peak Pulse Current
DC Sparkover
Number of Electrodes
Termination Style
Failsafe Protection Y/N
Diameter
Length
Minimum Operating Temperature
Maximum Operating Temperature
Packaging
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 3MM 350V 2POLE CHIP TYPE SMT
Datasheet
10In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2,000

GTCx2-R 1 kA 350 V 2 Electrode SMD/SMT Failsafe Not Protected 3 mm 4.5 mm - 40 C + 90 C Reel, Cut Tape, MouseReel
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 6MM 350V2POLE SMT GDT
Datasheet
240In Stock
750Expected 13/4/2026
MouseReel Available
Min.: 1
Mult.: 1
Reel: 750

GTCx2-R 5 kA 350 V 2 Electrode SMD/SMT Failsafe Not Protected 6 mm 4.2 mm - 40 C + 90 C Reel, Cut Tape, MouseReel
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 6MM 75V 2POLE SMT GDT
Datasheet
508In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 750

GTCx2-R 5 kA 75 V 2 Electrode SMD/SMT Failsafe Not Protected 6 mm 4.2 mm - 40 C + 90 C Reel, Cut Tape, MouseReel
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors
Datasheet
658In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1,000

GTCx3-R 5 kA 600 V 3 Electrode SMD/SMT Failsafe Not Protected 5 mm 7.6 mm - 40 C + 90 C Reel, Cut Tape, MouseReel
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 5MM 90V 3POLE SMT GDT
Datasheet
1,595In Stock
Min.: 1
Mult.: 1

GTCx3-R 5 kA 90 V 3 Electrode SMD/SMT Failsafe Not Protected 5 mm 7.6 mm - 40 C + 90 C Tray
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 140V 8mm 10KA 2POLE
Datasheet
745In Stock
Min.: 1
Mult.: 1

GTCx28-R 10 kA 140 V 2 Electrode Axial Failsafe Not Protected 8 mm 6.2 mm - 40 C + 90 C Tray
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 8MM 350V 2POLE AXIAL LEADS GDT
Datasheet
50In Stock
Min.: 1
Mult.: 1

GTCx28-R 10 kA 350 V 2 Electrode Axial Failsafe Not Protected 8 mm 6 mm - 40 C + 90 C Tray
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 75V 2.5KA 2POLE
Datasheet
4,495Expected 1/4/2026
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1,500

GTCx2-R 2.5 kA 75 V 2 Electrode SMD/SMT Failsafe Not Protected 5 mm 4.4 mm - 40 C + 90 C Reel, Cut Tape, MouseReel
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 5MM 75V 2POLE AXIAL LEADS GDT
Datasheet
663Expected 18/5/2026
Min.: 1
Mult.: 1

GTCx2-R 2.5 kA 75 V 2 Electrode Axial Failsafe Protected 5 mm 5 mm - 40 C + 90 C Tray
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 8MM 470V 2POLE AXIAL LEADS GDT
Datasheet
906Expected 13/5/2026
Min.: 1
Mult.: 1

GTCx28-R 10 kA 470 V 2 Electrode Axial Failsafe Not Protected 8 mm 6 mm - 40 C + 90 C Tray
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 8MM 230V 2POLE AXIAL LEADS GDT
Datasheet
1,000Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

GTCx28-R 20 kA 230 V 2 Electrode Axial Failsafe Not Protected 8 mm 6 mm - 40 C + 90 C Tray
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 6MM 300V 3POLE AXIAL LEADS GDT
Datasheet
1,000Factory Stock Available
More Info Available
Min.: 1,000
Mult.: 1,000

GTCx3-R 10 kA 300 V 3 Electrode Axial Failsafe Not Protected 6 mm 8 mm - 40 C + 90 C Tray
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors Gas Discharge Tubes 8.2mm 90V SurfaceMnt
Datasheet
50Factory Stock Available
More Info Available
MouseReel Available
Min.: 1
Mult.: 1
Reel: 500

GTCx2-R 20 kA 90 V 2 Electrode SMD/SMT Failsafe Not Protected 8.2 mm 6 mm - 40 C + 90 C Reel, Cut Tape, MouseReel
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 8MM 75V 2POLE AXIAL LEADS GDT
Datasheet
1,000Stock Available
More Info Available
Min.: 1
Mult.: 1

GTCx28-R 20 kA 75 V 2 Electrode Axial Failsafe Not Protected 8 mm 6 mm - 40 C + 90 C Tray
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors
Datasheet
Non-Stocked Lead-Time 11 Weeks
Min.: 1,000
Mult.: 1,000

GTCx2-R 2.5 kA 300 V 2 Electrode Axial Failsafe Not Protected 5 mm 5 mm - 40 C + 90 C Tray
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GTCA25-601L-R05
Datasheet
Non-Stocked Lead-Time 11 Weeks
Min.: 1,000
Mult.: 1,000

GTCx2-R 5 kA 600 V 2 Electrode Axial Failsafe Not Protected 0.8 mm 5.2 mm - 40 C + 90 C Tray
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 5MM 90V 2POLE AXIAL LEADS GDT
Datasheet
Non-Stocked Lead-Time 11 Weeks
Min.: 1
Mult.: 1

GTCx2-R 2.5 kA 90 V 2 Electrode Axial Failsafe Not Protected 5 mm 5 mm - 40 C + 90 C Tray
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors Gas Discharge Tubes 5mm 90V Axial Leaded
Datasheet
Non-Stocked Lead-Time 11 Weeks
Min.: 1,000
Mult.: 1,000
GTCx2-R 5 kA 90 V 2 Electrode Axial Failsafe Not Protected 5 mm 5 mm - 40 C + 90 C Tray
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors
Datasheet
Non-Stocked Lead-Time 11 Weeks
Min.: 1,000
Mult.: 1,000

GTCx2-R 5 kA 140 V 2 Electrode Axial Failsafe Not Protected 6 mm 4.2 mm - 40 C + 90 C Tray
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 6MM 150V 2POLE AXIAL LEADS GDT
Datasheet
Non-Stocked Lead-Time 11 Weeks
Min.: 5,000
Mult.: 1,000

GTCx2-R 5 kA 150 V 2 Electrode Axial Failsafe Protected 6 mm 4.2 mm - 40 C + 90 C Tray
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 200V 6mm 5KA 2POLE
Datasheet
Non-Stocked Lead-Time 11 Weeks
Min.: 1,000
Mult.: 1,000

GTCx2-R 5 kA 200 V 2 Electrode Axial Failsafe Not Protected 6 mm 4.2 mm - 40 C + 90 C Tray
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 6MM 230V 2POLE AXIAL LEADS GDT
Datasheet
Non-Stocked Lead-Time 11 Weeks
Min.: 1,000
Mult.: 1,000

GTCx2-R 5 kA 230 V 2 Electrode Axial Failsafe Not Protected 6 mm 4.2 mm - 40 C + 90 C Tray
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 6MM 250V 2POLE AXIAL LEADS GDT
Datasheet
Non-Stocked Lead-Time 11 Weeks
Min.: 1,000
Mult.: 1,000
GTCx2-R 5 kA 250 V 2 Electrode Axial Failsafe Not Protected 6.2 mm 4.3 mm - 40 C + 90 C Tray
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors Gas Discharge Tubes
Datasheet
Non-Stocked Lead-Time 11 Weeks
Min.: 1,300
Mult.: 1,300

GTCx2-R 5 kA 250 V 2 Electrode Axial Failsafe Not Protected 6 mm 4.2 mm - 40 C + 90 C Tray
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors
Datasheet
Non-Stocked Lead-Time 11 Weeks
Min.: 1,000
Mult.: 1,000

GTCx2-R 5 kA 300 V 2 Electrode Axial Failsafe Not Protected 6 mm 4.2 mm - 40 C + 90 C Tray