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 (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 STANDARD 350V MS
Datasheet
1,475In 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 GP S.A. STAN. 1000V
Datasheet
1,698In 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 800V NOM
Datasheet
1,720In 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 STANDARD 230V MS
Datasheet
925In 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 GP S.A. STAN. 800V
Datasheet
1,433In Stock
Min.: 1
Mult.: 1
: 500

CG2 10 kA 800 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. 470V
Datasheet
1,619In 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 STANDARD 470V MS
Datasheet
41In Stock
1,000Expected 10/22/2026
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 GP S.A. STANDARD 470V NOMINAL SMT
Datasheet
772In 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
785In 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
721In 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 GP S.A. STANDARD 800V NOMINAL SMT
Datasheet
500In Stock
Min.: 1
Mult.: 1
: 500
CG2 10 kA 800 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 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 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 STANDARD 1000V MS
Datasheet
1,728In 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
3,653In Stock
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 300V NOM
Datasheet
855In 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 STANDARD 600V NOM
Datasheet
1,016In Stock
Min.: 1
Mult.: 1

CG2 20 kA 600 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
4,839In 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 1000V MS TR GP S.A. STANDARD
Datasheet
396In 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 GP S.A. STAN. 230V
Datasheet
31In Stock
1,000Expected 11/18/2026
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 STANDARD 350V NOM
Datasheet
602In Stock
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 GP S.A. STAN. 350V
Datasheet
276In 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 420V NOM
Datasheet
263In 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
740In Stock
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
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP S.A. STAN. 470V
Datasheet
199In Stock
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