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 (DKK) 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 75V 2POLE SMT GDT
Datasheet
69In Stock
40.000On Order
MouseReel Available
Min.: 1
Mult.: 1
: 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 230V 2POLE SMT GDT
Datasheet
880In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 750

GTCx2-R 5 kA 230 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
250In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 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
1.057In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 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 6MM 90V 3POLE SMT GDT
Datasheet
1.068In Stock
4.500Expected 13/08/2026
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 3600V 2POLE AXIAL LEAD HV GDT
Datasheet
1.000Expected 13/08/2026
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 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 8MM 150V 2POLE AXIAL LEADS GDT
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 1.000
Mult.: 1.000

GTCx28-R 10 kA 150 V 2 Electrode Axial Failsafe Not Protected 8 mm 6 mm - 40 C + 90 C Tray
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 350V 8mm 20KA 2POLE
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 1.000
Mult.: 100

GTCx28-R 20 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 8MM 230V 3POLE AXIAL LEADS GDT
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 1
Mult.: 1

GTCx3-R 10 kA 230 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 Gas Discharge Tubes 8mm 90V Axial Leaded
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 1.000
Mult.: 1.000
GTCx3-R 20 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 230V 2POLE SMT GDT
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 2.000
Mult.: 2.000
: 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
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors Gas Discharge Tubes 5mm 470V Surface Mnt
Datasheet
Non-Stocked Lead-Time 10 Weeks
Min.: 1.500
Mult.: 1.500
: 1.500
GTCx2-R 2.5 kA 470 V 2 Electrode SMD/SMT Failsafe Not Protected 5 mm 4.4 mm - 40 C + 90 C Reel
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 8MM 75V 2POLE SMT GDT
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 4.000
Mult.: 500
: 500

GTCx2-R 10 kA 75 V 2 Electrode SMD/SMT Failsafe Not Protected 8.2 mm 6 mm - 40 C + 90 C Reel
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 5MM 250V 2POLE AXIAL LEADS GDT
Datasheet
Non-Stocked Lead-Time 15 Weeks
Min.: 1.000
Mult.: 1.000

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
Datasheet
Non-Stocked Lead-Time 15 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 15 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 15 Weeks
Min.: 1.000
Mult.: 1.000

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 15 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 15 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 15 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 15 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 15 Weeks
Min.: 1
Mult.: 1

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 15 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 15 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