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 8MM 1500V 2POLE AXIAL LEAD HV GDT
Datasheet
1,255In 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 3MM 150V 2POLE CHIP TYPE SMT
Datasheet
3,715In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 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 3MM 90V 2POLE CHIP TYPE SMT
Datasheet
5,105In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 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
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 3MM 90V 2POLE SMT GDT
Datasheet
22,254In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 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
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 5MM 75V 3POLE SMT GDT
Datasheet
3,175In Stock
Min.: 1
Mult.: 1

GTCx3-R 5 kA 75 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 75V 3POLE SMT GDT
Datasheet
9,932In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1,000

GTCx3-R 5 kA 75 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
2,985In Stock
4,000Expected 24/4/2026
MouseReel Available
Min.: 1
Mult.: 1
Reel: 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 75V 3POLE SMT GDT
Datasheet
3,000In Stock
Min.: 1
Mult.: 1
Reel: 750
GTCx3-R 10 kA 75 V 3 Electrode SMD/SMT Failsafe Not Protected 6 mm 8.2 mm - 40 C + 90 C Reel, Cut Tape
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 5MM 400V 2POLE AXIAL LEADS GDT
Datasheet
191In Stock
Min.: 1
Mult.: 1

GTCx2-R 2.5 kA 400 V 2 Electrode Axial Failsafe Protected 5 mm 5 mm - 40 C + 90 C Tray
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 5MM 500V 2POLE AXIAL LEADS GDT
Datasheet
439In Stock
Min.: 1
Mult.: 1

GTCx2-R 2.5 kA 500 V 2 Electrode Axial Failsafe Protected 5 mm 5 mm - 40 C + 90 C Tray
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 8MM 1200V 2POLE AXIAL LEAD HV GDT
Datasheet
441In Stock
Min.: 1
Mult.: 1

GTCx28-R 3 kA 1.2 kV 2 Electrode Axial Failsafe Not Protected 8 mm 6 mm - 40 C + 90 C Tray
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 140V 8mm 20KA 2POLE
Datasheet
61In Stock
Min.: 1
Mult.: 1

GTCx28-R 20 kA 140 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 2100V 2POLE AXIAL LEAD HV GDT
Datasheet
489In Stock
1,000Expected 11/2/2026
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 2700V 2POLE AXIAL LEADS HV GDT
Datasheet
421In Stock
Min.: 1
Mult.: 1

GTCx28-R 3 kA 2.7 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 3600V 2POLE AXIAL LEAD HV GDT
Datasheet
452In 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 8MM 600V 2POLE AXIAL LEADS GDT
Datasheet
319In Stock
Min.: 1
Mult.: 1

GTCx28-R 10 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 5MM 75V 3POLE AXIAL LEADS GDT
Datasheet
795In Stock
Min.: 1
Mult.: 1

GTCx3-R 5 kA 75 V 3 Electrode Axial Failsafe Not Protected 5 mm 7.6 mm - 40 C + 90 C Tray
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 8MM 90V 3POLE AXIAL LEADS GDT
Datasheet
184In Stock
1,000Expected 24/4/2026
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 3MM 200V 2POLE CHIP TYPE SMT
Datasheet
681In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 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 300V 1KA 20% 2-POLE SMD
Datasheet
32In Stock
4,000Expected 13/5/2026
MouseReel Available
Min.: 1
Mult.: 1
Reel: 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 3MM 400V 2POLE CHIP TYPE SMT
Datasheet
1,097In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2,000

GTCx2-R 1 kA 400 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 500V 2POLE 4.5mm L
Datasheet
2,505In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2,000

GTCx2-R 1 kA 500 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 75V 1KA 20% 2-POLE SMD
Datasheet
1,970In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2,000

GTCx2-R 1 kA 75 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 90V 3POLE RADIAL LEADS GDT
Datasheet
308In Stock
1,000Expected 21/4/2026
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 7MM 90V 3POLE RADIAL LEADS GDT
Datasheet
377In Stock
Min.: 1
Mult.: 1

GTCx3-R 10 kA 90 V 3 Electrode Radial Failsafe Not Protected 7.5 mm 11.5 mm - 40 C + 90 C Tray