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 (TWD) 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 3MM 230V 2POLE CHIP TYPE SMT
Datasheet
3,777In Stock
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 5MM 90V 3POLE SMT GDT
Datasheet
3,240In 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 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 5MM 90V 3POLE SMT GDT
Datasheet
5,965In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

GTCx3-R 5 kA 90 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 6MM 100V 2POLE AXIAL LEADS GDT
Datasheet
2,023In Stock
Min.: 1
Mult.: 1

GTCx2-R 5 kA 100 V 2 Electrode Axial Failsafe Not Protected 6.2 mm 4.4 mm - 40 C + 90 C Tray
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 3MM 200V 2POLE CHIP TYPE SMT
Datasheet
2,341In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,000

GTCx2-R 1 kA 200 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 2100V 2POLE AXIAL LEAD HV GDT
Datasheet
1,466In 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
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 8MM 90V 3POLE AXIAL LEADS GDT
Datasheet
1,134In 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 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 600V 2POLE AXIAL LEADS GDT
Datasheet
868In 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
Datasheet
951In 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 8MM 1000V 2POLE AXIAL LEAD HV GDT
Datasheet
760In Stock
Min.: 1
Mult.: 1

GTCx28-R 3 kA 1 kV 2 Electrode Axial Failsafe Not Protected 8 mm 6 mm - 40 C + 90 C Tray
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 6MM 90V 2POLE AXIAL LEADS GDT
Datasheet
150In Stock
Min.: 1
Mult.: 1

GTCx2-R 5 kA 90 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 4000V 2POLE AXIAL LEAD HV GDT
Datasheet
100In Stock
1,000Expected 9/2/2026
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 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 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 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
816In Stock
1,000Expected 9/24/2026
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 350V2POLE SMT GDT
Datasheet
1,463In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 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 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 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 90V 2POLE SMT GDT
Datasheet
47,074In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,000

GTCx2-R 1 kA 90 V 2 Electrode SMD/SMT Failsafe Not Protected 3 mm 4.5 mm - 40 C + 90 C Reel, Cut Tape, MouseReel