CG2 Gas Discharge Tubes (GDTs)

Littelfuse CG2 Gas Discharge Tubes (GDTs) provide a high degree of surge protection in a small size, making them ideal for board-level circuit protection. These GDTs function as switches to dissipate a minimum amount of energy and handle currents that surpass other types of transient voltage protection. The CG2 series features a 145V to 1000V DC sparkover range, which is ideal for protecting equipment with higher voltage limits and holdover voltages. The gas-filled, rugged ceramic metal construction is highly reliable and well-suited for adverse environments. Littelfuse CG2 GDTs are available in various forms, including surface mount, core, straight, and shaped leads. Applications include data lines, power supplies, communication lines and equipment, medical electronics, and instrumentation circuits.

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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 GP S.A. STAN. 1000V
Datasheet
1,708In Stock
Min.: 1
Mult.: 1
: 500

CG2 10 kA 1 kV 2 Electrode Axial Failsafe Not Protected 8.1 mm 6.07 mm - 40 C + 90 C Reel, Cut Tape
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors STANDARD 470V MS
Datasheet
1,225In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 500

CG2 20 kA 470 V 2 Electrode SMD/SMT Failsafe Not Protected 8.3 mm 6.05 mm - 40 C + 90 C Reel, Cut Tape, MouseReel
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors STANDARD 350V MS
Datasheet
1,485In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 500

CG2 20 kA 350 V 2 Electrode SMD/SMT Failsafe Not Protected 8.3 mm 6.05 mm - 40 C + 90 C Reel, Cut Tape, MouseReel
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors STANDARD 600V NOM
Datasheet
802In Stock
Min.: 1
Mult.: 1
: 500

CG2 20 kA 600 V 2 Electrode Axial Failsafe Not Protected 8.1 mm 6.07 mm - 40 C + 90 C Reel, Cut Tape
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 145V MS GP S.A. STANDARD
Datasheet
520In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 500

CG2 20 kA 145 V 2 Electrode SMD/SMT Failsafe Not Protected 8.3 mm 6.05 mm - 40 C + 90 C Reel, Cut Tape, MouseReel
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP S.A. STANDARD 470V NOMINAL SMT
Datasheet
774In Stock
Min.: 1
Mult.: 1
: 500
CG2 20 kA 470 V 2 Electrode Axial Failsafe Not Protected 8.1 mm 6.07 mm - 40 C + 90 C Reel, Cut Tape
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP S.A. STAN. 350V
Datasheet
807In Stock
Min.: 1
Mult.: 1

CG2 20 kA 350 V 2 Electrode SMD/SMT Failsafe Not Protected 8.1 mm 6.07 mm - 40 C + 90 C Bulk
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP S.A. STAN. 1000V
Datasheet
761In Stock
Min.: 1
Mult.: 1

CG2 20 kA 1 kV 2 Electrode SMD/SMT Failsafe Not Protected 8.1 mm 6.07 mm - 40 C + 90 C Bulk
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors STANDARD 230V NOM
Datasheet
566In Stock
Min.: 1
Mult.: 1

CG2 20 kA 230 V 2 Electrode SMD/SMT Failsafe Not Protected 8.1 mm 6.07 mm - 40 C + 90 C Bulk
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors STANDARD 1000V MS
Datasheet
1,938In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 500

CG2 20 kA 1 kV 2 Electrode SMD/SMT Failsafe Not Protected 8.3 mm 6.05 mm - 40 C + 90 C Reel, Cut Tape, MouseReel
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 1000V MS TR GP S.A. STANDARD
Datasheet
998In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 500

CG2 20 kA 1 kV 2 Electrode SMD/SMT Failsafe Not Protected 8.3 mm 6.05 mm - 40 C + 90 C Reel, Cut Tape, MouseReel
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors STANDARD 145V NOM
Datasheet
2,697In Stock
1,400Expected 27/07/2026
Min.: 1
Mult.: 1

CG2 20 kA 145 V 2 Electrode Axial Failsafe Not Protected 8.1 mm 6.07 mm - 40 C + 90 C Tray
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors STANDARD 230V MS
Datasheet
945In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 500

CG2 20 kA 230 V 2 Electrode SMD/SMT Failsafe Not Protected 8.3 mm 6.05 mm - 40 C + 90 C Reel, Cut Tape, MouseReel
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors STANDARD 300V NOM
Datasheet
865In Stock
Min.: 1
Mult.: 1

CG2 20 kA 300 V 2 Electrode Axial Failsafe Not Protected 8.1 mm 6.07 mm - 40 C + 90 C Tray
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP S.A. STAN. 350V
Datasheet
1,576In Stock
Min.: 1
Mult.: 1
: 500

CG2 20 kA 350 V 2 Electrode Axial Failsafe Not Protected 8.1 mm 6.07 mm - 40 C + 90 C Reel, Cut Tape
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors STANDARD 600V MS
Datasheet
930In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 500

CG2 20 kA 600 V 2 Electrode SMD/SMT Failsafe Not Protected 8.3 mm 6.05 mm - 40 C + 90 C Reel, Cut Tape, MouseReel
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors STANDARD 800V NOM
Datasheet
1,835In Stock
Min.: 1
Mult.: 1

CG2 10 kA 800 V 2 Electrode Axial Failsafe Not Protected 8.1 mm 6.07 mm - 40 C + 90 C Tray
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 800V MS GP S.A. STANDARD
Datasheet
5,149In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 500

CG2 10 kA 800 V 2 Electrode SMD/SMT Failsafe Not Protected 8.3 mm 6.05 mm - 40 C + 90 C Reel, Cut Tape, MouseReel
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors STANDARD 1000V NOM
Datasheet
473In Stock
Min.: 1
Mult.: 1

CG2 20 kA 1 kV 2 Electrode Axial Failsafe Not Protected 8.1 mm 6.07 mm - 40 C + 90 C Tray
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors STANDARD 230V NOM
Datasheet
108In Stock
700Expected 28/09/2026
Min.: 1
Mult.: 1

CG2 20 kA 230 V 2 Electrode Axial Failsafe Not Protected 8.1 mm 6.07 mm - 40 C + 90 C Tray
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP S.A. STAN. 230V
Datasheet
591In Stock
Min.: 1
Mult.: 1
: 500

CG2 20 kA 230 V 2 Electrode Axial Failsafe Not Protected 8.1 mm 6.07 mm - 40 C + 90 C Reel, Cut Tape
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP S.A. STAN. 250V
Datasheet
324In Stock
Min.: 1
Mult.: 1

CG2 20 kA 250 V 2 Electrode Axial Failsafe Not Protected 8.1 mm 6.07 mm - 40 C + 90 C Tray
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors STANDARD 350V NOM
Datasheet
2In Stock
700On Order
Min.: 1
Mult.: 1

CG2 20 kA 350 V 2 Electrode Axial Failsafe Not Protected 8.1 mm 6.07 mm - 40 C + 90 C Tray
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors STANDARD 420V NOM
Datasheet
315In Stock
Min.: 1
Mult.: 1

CG2 20 kA 420 V 2 Electrode Axial Failsafe Not Protected 8.1 mm 6.07 mm - 40 C + 90 C Tray
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors STANDARD 470V NOM
Datasheet
205In Stock
700Expected 20/05/2026
Min.: 1
Mult.: 1

CG2 20 kA 470 V 2 Electrode Axial Failsafe Not Protected 8.1 mm 6.07 mm - 40 C + 90 C Tray