CG4 Miniature Gas Discharge Tubes

Littelfuse CG4 Miniature Gas Discharge Tubes (GDTs) provide high levels of protection against fast-rising transients caused by lightning disturbances. Littelfuse CG4 provides a 3kA 8/20µs surge rating and comes in a two-terminal surface mount package (6.2mm width x 6.2mm height x 4.2mm length). CG4 GDTs feature an 800V to 3000V voltage range designed for surge protection and high isolation applications. Littelfuse CG4 GDTs ideally serve applications in which bias voltage or signal levels of several hundred volts are normally present. Designers can use these gas discharge tubes along with Littelfuse metal oxide varistors (MOVs) for superior protection performance.

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Description Datasheet Availability Pricing (INR) 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 1000V 3kA 8/20us UL 1449
Datasheet
4,900In Stock
3,000Expected 27-08-2026
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

CG4 3 kA 1 kV 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 1200V 3kA 8/20us UL 1449
Datasheet
5In Stock
2,000Expected 26-11-2026
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

CG4 3 kA 1.2 kV 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 2000V 3kA 8/20us UL 1449
Datasheet
581In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

CG4 3 kA 2 kV 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 3000V 3kA 8/20us UL 1449
Datasheet
392In Stock
1,000Expected 15-10-2026
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

CG4 3 kA 3 kV 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 2500V 3kA 8/20us UL 1449
Datasheet
980Expected 11-09-2026
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

CG4 3 kA 2.5 kV 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 800V 3kA 8/20us UL 1449
Datasheet
Non-Stocked Lead-Time 14 Weeks
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

CG4 3 kA 800 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 1800V 3kA 8/20us UL 1449
Datasheet
Non-Stocked Lead-Time 14 Weeks
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

CG4 3 kA 1.8 kV 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 2700V 3kA 8/20us UL 1449
Datasheet
Non-Stocked Lead-Time 14 Weeks
Min.: 1,000
Mult.: 1,000
: 1,000

CG4 3 kA 2.7 kV 2 Electrode SMD/SMT Failsafe Not Protected 6 mm 4.2 mm - 40 C + 90 C Reel