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 (CAD) 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 600V NOM
Datasheet
131In Stock
350Expected 2026-04-17
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 STANDARD 600V MS
Datasheet
138In Stock
1,000Expected 2026-04-03
MouseReel Available
Min.: 1
Mult.: 1
Reel: 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
737In Stock
1,400On Order
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 GP S.A. STAN. 800V
Datasheet
494In Stock
Min.: 1
Mult.: 1
Reel: 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. 230V
Datasheet
67In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 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, MouseReel
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors STANDARD 1000V MS
Datasheet
1,950On Order
MouseReel Available
Min.: 1
Mult.: 1
Reel: 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. 1000V
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 500
Mult.: 500
Reel: 500

CG2 20 kA 1 kV 2 Electrode Axial Failsafe Not Protected 8.1 mm 6.07 mm - 40 C + 90 C Reel
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP S.A. STAN. 145V
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 1,200
Mult.: 1,200

CG2 20 kA 145 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. 145V
Datasheet
Non-Stocked Lead-Time 12 Weeks
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 GP S.A. STAN. 145V
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 1,000
Mult.: 500
Reel: 500

CG2 20 kA 145 V 2 Electrode Axial Failsafe Not Protected 8.1 mm 6.07 mm - 40 C + 90 C Reel
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP S.A. STAN. 145V
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 1,200
Mult.: 1,200

CG2 20 kA 145 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. 230V
Datasheet
Non-Stocked Lead-Time 12 Weeks
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
Non-Stocked Lead-Time 12 Weeks
Min.: 1,200
Mult.: 1,200

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 GP S.A. STAN. 250V
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 1,200
Mult.: 1,200

CG2 20 kA 250 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. 250V
Datasheet
Non-Stocked Lead-Time 12 Weeks
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 GP S.A. STAN. 250V
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 1,000
Mult.: 500
Reel: 500

CG2 20 kA 250 V 2 Electrode Axial Failsafe Not Protected 8.1 mm 6.07 mm - 40 C + 90 C Reel
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP S.A. STAN. 250V
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 1,000
Mult.: 500
Reel: 500

CG2 20 kA 250 V 2 Electrode Axial Failsafe Not Protected 8.1 mm 6.07 mm - 40 C + 90 C Reel
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 250V MS GP S.A. STANDARD
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 1,000
Mult.: 500
Reel: 500

CG2 20 kA 250 V 2 Electrode SMD/SMT Failsafe Not Protected 8.3 mm 6.05 mm - 40 C + 90 C Reel
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP S.A. STAN. 250V
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 1,200
Mult.: 1,200

CG2 20 kA 250 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. 300V
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 1,200
Mult.: 1,200

CG2 20 kA 300 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. 300V
Datasheet
Non-Stocked Lead-Time 12 Weeks
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. 300V
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 1,000
Mult.: 500
Reel: 500

CG2 20 kA 300 V 2 Electrode Axial Failsafe Not Protected 8.1 mm 6.07 mm - 40 C + 90 C Reel
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP S.A. STAN. 300V
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 1,000
Mult.: 500
Reel: 500

CG2 20 kA 300 V 2 Electrode Axial Failsafe Not Protected 8.1 mm 6.07 mm - 40 C + 90 C Reel
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 300V MS GP S.A. STANDARD
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 1,000
Mult.: 500
Reel: 500

CG2 20 kA 300 V 2 Electrode SMD/SMT Failsafe Not Protected 8.3 mm 6.05 mm - 40 C + 90 C Reel
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP S.A. STAN. 350V
Datasheet
Non-Stocked Lead-Time 12 Weeks
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