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 (GBP) 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 6MM 90V 3POLE RADIAL LEADS GDT
Datasheet
1,304In Stock
Min.: 1
Mult.: 1

GTCx3-R 10 kA 90 V 3 Electrode Radial Failsafe Not Protected 6 mm 9.2 mm - 40 C + 90 C Tray
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 8MM 90V 3POLE RADIAL LEADS GDT
Datasheet
1,000In Stock
Min.: 1
Mult.: 1

GTCx3-R 10 kA 90 V 3 Electrode Radial Failsafe Not Protected 7.5 mm 10 mm - 40 C + 90 C Tray
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 8MM 90V 3POLE AXIAL LEADS GDT
Datasheet
1,156In Stock
Min.: 1
Mult.: 1

GTCx3-R 10 kA 90 V 3 Electrode Axial Failsafe Not Protected 8 mm 13.4 mm - 40 C + 90 C Tray
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors
Datasheet
956In Stock
Min.: 1
Mult.: 1

GTCx3-R 20 kA 600 V 3 Electrode Radial Failsafe Not Protected 7.5 mm 10 mm - 40 C + 90 C Tray
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 5MM 90V2POLE SMT GDT
Datasheet
3,661In Stock
Min.: 1
Mult.: 1

GTCx2-R 2.5 kA 90 V 2 Electrode SMD/SMT Failsafe Not Protected 5 mm 4.4 mm - 40 C + 90 C Tray
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 6MM 90V 3POLE SMT GDT
Datasheet
2,968In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 750

GTCx3-R 10 kA 90 V 3 Electrode SMD/SMT Failsafe Not Protected 6 mm 8.2 mm - 40 C + 90 C Reel, Cut Tape, MouseReel
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 8MM 3000V 2POLE AXIAL LEAD HV GDT
Datasheet
978In Stock
Min.: 1
Mult.: 1

GTCx28-R 3 kA 3 kV 2 Electrode Axial Failsafe Not Protected 8 mm 6 mm - 40 C + 90 C Tray
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 8MM 4000V 2POLE AXIAL LEAD HV GDT
Datasheet
800In Stock
Min.: 1
Mult.: 1
GTCx28-R 3 kA 4 kV 2 Electrode Axial Failsafe Not Protected 8 mm 6 mm - 40 C + 90 C Tray
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 8MM 600V 2POLE AXIAL LEADS GDT
Datasheet
988In Stock
Min.: 1
Mult.: 1

GTCx28-R 5 kA 600 V 2 Electrode Axial Failsafe Not Protected 8 mm 6 mm - 40 C + 90 C Tray
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 300V 1KA 20% 2-POLE SMD
Datasheet
4,032In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,000

GTCx2-R 1 kA 300 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 8MM 75V 2POLE SMT GDT
Datasheet
1,773In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 500

GTCx2-R 5 kA 75 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 2400V 2POLE AXIAL LEAD HV GDT
Datasheet
2,808In Stock
Min.: 1
Mult.: 1
GTCx28-R 3 kA 2.4 kV 2 Electrode Axial Failsafe Not Protected 8 mm 6 mm - 40 C + 90 C Tray
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 3MM 230V 2POLE CHIP TYPE SMT
Datasheet
67In Stock
4,000Expected 28/05/2026
MouseReel Available
Min.: 1
Mult.: 1
: 2,000

GTCx2-R 1 kA 230 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 3MM 300V 2POLE SMT GDT
Datasheet
872In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,000

GTCx2-R 1 kA 300 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 8MM 230V 2POLE SMT GDT
Datasheet
279In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 500

GTCx2-R 10 kA 230 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 3MM 150V 2POLE CHIP TYPE SMT
Datasheet
1,715In Stock
4,000Expected 02/07/2026
MouseReel Available
Min.: 1
Mult.: 1
: 2,000

GTCx2-R 1 kA 150 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 50V 2POLE AXIAL LEADS GDT
Datasheet
781In Stock
Min.: 1
Mult.: 1

GTCx2-R 5 kA 500 V 2 Electrode Axial Failsafe Protected 6 mm 4.2 mm - 40 C + 90 C Tray
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 8MM 75V 2POLE AXIAL LEADS GDT
Datasheet
826In Stock
Min.: 1
Mult.: 1

GTCx28-R 10 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 6MM 230V 3POLE RADIAL LEADS GDT
Datasheet
1,042In Stock
Min.: 1
Mult.: 1

GTCx3-R 10 kA 230 V 3 Electrode Radial Failsafe Not Protected 6 mm 9.2 mm - 40 C + 90 C Tray
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 6MM 350V 2POLE AXIAL LEADS GDT
Datasheet
868In Stock
Min.: 1
Mult.: 1

GTCx2-R 5 kA 350 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 8MM 3600V 2POLE AXIAL LEAD HV GDT
Datasheet
412In Stock
Min.: 1
Mult.: 1

GTCx28-R 3 kA 3.6 kV 2 Electrode Axial Failsafe Not Protected 8 mm 6 mm - 40 C + 90 C Tray
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 5MM 230V 3POLE SMT GDT
Datasheet
2,130In Stock
Min.: 1
Mult.: 1

GTCx3-R 5 kA 230 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 5MM 250V 2POLE AXIAL LEADS GDT
Datasheet
726In Stock
Min.: 1
Mult.: 1

GTCx2-R 2.5 kA 250 V 2 Electrode Axial Failsafe Not Protected 5 mm 5 mm - 40 C + 90 C Tray
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 8MM 1500V 2POLE AXIAL LEAD HV GDT
Datasheet
1,126In Stock
Min.: 1
Mult.: 1

GTCx28-R 3 kA 1.5 kV 2 Electrode Axial Failsafe Not Protected 8 mm 6 mm - 40 C + 90 C Tray
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 8MM 2100V 2POLE AXIAL LEAD HV GDT
Datasheet
1,473In Stock
Min.: 1
Mult.: 1

GTCx28-R 3 kA 2.1 kV 2 Electrode Axial Failsafe Not Protected 8 mm 6 mm - 40 C + 90 C Tray