CG3 High-Voltage Gas Discharge Tubes

Littelfuse CG3 High-Voltage Gas Discharge Tubes (GDTs) are two-electrode, 1kV to 7.5kV devices designed for surge protection and high-isolation applications. Littelfuse CG3 GDTs are also designed for applications for which bias voltages or signal levels of several hundred volts are normally present. CG3 offers a low capacitance of <1.5pF and 5kA peak pulse current while operating over a -40°C to +90°C operating temperature range.

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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 GP S.A. STAN. 1.2KV
Datasheet
2.037In Stock
Min.: 1
Mult.: 1

CG3 1.2 kV 2 Electrode Axial Failsafe Not Protected 8 mm 6 mm - 40 C + 90 C Tray
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP S.A. STAN 2.5KV
Datasheet
2.100In Stock
Min.: 1
Mult.: 1
: 500

CG3 2.5 kV 2 Electrode Axial Failsafe Not Protected 8 mm 6 mm - 40 C + 90 C Reel, Cut Tape
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP S.A. STAN 4.0KV
Datasheet
3.934In Stock
Min.: 1
Mult.: 1
: 500

CG3 4 kV 2 Electrode Axial Failsafe Not Protected 8 mm 6 mm - 40 C + 90 C Reel, Cut Tape
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP S.A. STAN 1.0KV
Datasheet
610In Stock
Min.: 1
Mult.: 1

CG3 1 kV 2 Electrode Axial Failsafe Not Protected 8 mm 6 mm - 40 C + 90 C Bulk
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP S.A. 1.3KV SPECIAL LIMITS
Datasheet
54In Stock
Min.: 1
Mult.: 1

CG3 5 kA 1.3 kV 2 Electrode Axial Failsafe Not Protected 8 mm 6 mm - 40 C + 90 C Tray
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 3.0KV Standard GP Nominal
Datasheet
650In Stock
Min.: 1
Mult.: 1

CG3 3 kV 2 Electrode Axial Failsafe Not Protected 8 mm 6 mm - 40 C + 90 C Bulk
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP S.A. STAN 4.0KV
Datasheet
1.200In Stock
Min.: 1
Mult.: 1

CG3 4 kV 2 Electrode Axial Failsafe Not Protected 8 mm 6 mm - 40 C + 90 C Bulk
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP S.A. STAN. 1.0KV
Datasheet
881In Stock
Min.: 1
Mult.: 1
: 500

CG3 1 kV 2 Electrode Axial Failsafe Not Protected 8 mm 6 mm - 40 C + 90 C Reel, Cut Tape
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP S.A. STAN. 1.5KV
Datasheet
938In Stock
Min.: 1
Mult.: 1

CG3 1.5 kV 2 Electrode Axial Failsafe Not Protected 8 mm 6 mm - 40 C + 90 C Bulk
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors STANDARD 1.5KV NOM
Datasheet
1.626In Stock
Min.: 1
Mult.: 1

CG3 1.5 kV 2 Electrode Axial Failsafe Not Protected 8 mm 6 mm - 40 C + 90 C Tray
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP S.A. STAN. 2.0KV
Datasheet
767In Stock
Min.: 1
Mult.: 1
: 500

CG3 2 kV 2 Electrode Axial Failsafe Not Protected 8 mm 6 mm - 40 C + 90 C Reel, Cut Tape
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors STANDARD 2.5KV NOM
Datasheet
1.590In Stock
Min.: 1
Mult.: 1

CG3 2.5 kV 2 Electrode Axial Failsafe Not Protected 8 mm 6 mm - 40 C + 90 C Tray
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP S.A. STAN 3.0KV
Datasheet
686In Stock
1.000Expected 04/08/2026
Min.: 1
Mult.: 1
: 500

CG3 3 kV 2 Electrode Axial Failsafe Not Protected 8 mm 6 mm - 40 C + 90 C Reel, Cut Tape
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP S.A. STAN. 4.0KV
Datasheet
1.545In Stock
Min.: 1
Mult.: 1

CG3 4 kV 2 Electrode Axial Failsafe Not Protected 8 mm 6 mm - 40 C + 90 C Tray
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP S.A. STAN. 4.5KV
Datasheet
716In Stock
2.450Expected 24/04/2026
Min.: 1
Mult.: 1

CG3 4.5 kV 2 Electrode Axial Failsafe Not Protected 8 mm 6 mm - 40 C + 90 C Tray
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors STANDARD 5.0KV NOM
Datasheet
1.057In Stock
Min.: 1
Mult.: 1

CG3 5 kV 2 Electrode Axial Failsafe Not Protected 8 mm 6 mm - 40 C + 90 C Tray
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 5.0KV Standard GP Nominal
Datasheet
1.062In Stock
1.000Expected 13/08/2026
Min.: 1
Mult.: 1
: 500

CG3 5 kV 2 Electrode Axial Failsafe Not Protected 8 mm 6 mm - 40 C + 90 C Reel, Cut Tape
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP S.A. STAN. 1.0KV
Datasheet
478In Stock
Min.: 1
Mult.: 1

CG3 1 kV 2 Electrode Axial Failsafe Not Protected 8 mm 6 mm - 40 C + 90 C Tray
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP S.A. STAN. 1.5KV
Datasheet
511In Stock
Min.: 1
Mult.: 1
: 500

CG3 1.5 kV 2 Electrode Axial Failsafe Not Protected 8 mm 6 mm - 40 C + 90 C Reel, Cut Tape
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors STANDARD 2.0KV NOM
Datasheet
644In Stock
Min.: 1
Mult.: 1

CG3 2 kV 2 Electrode Axial Failsafe Not Protected 8 mm 6 mm - 40 C + 90 C Tray
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors STANDARD 3.0KV NOM
Datasheet
497In Stock
Min.: 1
Mult.: 1

CG3 3 kV 2 Electrode Axial Failsafe Not Protected 8 mm 6 mm - 40 C + 90 C Tray
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors Standard HV
Datasheet
491In Stock
350Expected 30/07/2026
Min.: 1
Mult.: 1

CG3 5 kA 3.3 kV 2 Electrode Axial Failsafe Not Protected 8 mm 6 mm - 40 C + 90 C Tray
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors S.A. STAN 3.3KV
Datasheet
304In Stock
1.000Expected 27/05/2026
Min.: 1
Mult.: 1
: 500

CG3 5 kA 3.3 kV 2 Electrode Axial Failsafe Not Protected 8 mm 6 mm - 40 C + 90 C Reel, Cut Tape
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP S.A. STAN 4.5KV
Datasheet
60In Stock
1.500Expected 24/04/2026
Min.: 1
Mult.: 1
: 500

CG3 4.5 kV 2 Electrode Axial Failsafe Not Protected 8 mm 6 mm - 40 C + 90 C Reel, Cut Tape
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors Standard HV Nominal
Datasheet
699On Order
Min.: 1
Mult.: 1

CG3 5 kA 2.7 kV 2 Electrode Axial Failsafe Not Protected 8 mm 6 mm - 40 C + 90 C Tray