Gas Discharge Tubes - GDTs / Gas Plasma Arrestors

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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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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (GBP) Filter the results in the table by unit price based on your quantity.	Qty.	Series	Peak Pulse Current	DC Sparkover	Number of Electrodes	Termination Style	Failsafe Protection Y/N	Diameter	Length	Minimum Operating Temperature	Maximum Operating Temperature	Packaging
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP S.A. STAN. 1.2KV CG31.2L Littelfuse 1: £3.22 1,879In Stock	Mfr. Part No. CG31.2L Mouser Part No 576-CG31.2L	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP S.A. STAN. 1.2KV Learn More about Littelfuse cg3 gas discharge tubes	Datasheet	1,879In Stock	£3.22 £2.67 £2.46 £2.04 View £1.89 £1.63 £1.50	Min.: 1 Mult.: 1	CG3		1.2 kV	2 Electrode	Axial	Failsafe Not Protected	8 mm	6 mm	- 40 C	+ 90 C	Tray
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP S.A. STAN. 1.5KV CG31.5LTR Littelfuse 1: £3.26 837In Stock	Mfr. Part No. CG31.5LTR Mouser Part No 576-CG31.5LTR	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP S.A. STAN. 1.5KV Learn More about Littelfuse cg3 gas discharge tubes	Datasheet	837In Stock	Cut Tape £3.26 £2.71 £2.50 £2.08 View Reel £1.68 £1.92 £1.80 £1.68	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
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors Standard HV Nominal CG32.7L Littelfuse 1: £3.36 700In Stock	Mfr. Part No. CG32.7L Mouser Part No 576-CG32.7L	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors Standard HV Nominal Learn More about Littelfuse cg3 gas discharge tubes	Datasheet	700In Stock	£3.36 £2.88 £2.56 £2.32	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
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 2.7KV GP Axial Leaded CG32.7LTR Littelfuse 1: £3.22 1,000In Stock	Mfr. Part No. CG32.7LTR Mouser Part No 576-CG32.7LTR	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 2.7KV GP Axial Leaded Learn More about Littelfuse cg3 gas discharge tubes	Datasheet	1,000In Stock	Cut Tape £3.22 £2.88 £2.49 £2.20 Reel £1.67 View £1.91 £1.84 £1.63	Min.: 1 Mult.: 1 : 500	CG3	5 kA	2.7 kV	2 Electrode	Axial	Failsafe Not Protected	8 mm	6 mm	- 40 C	+ 90 C	Reel, Cut Tape
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP S.A. STAN 4.5KV CG34.5LTR Littelfuse 1: £3.39 1,333In Stock	Mfr. Part No. CG34.5LTR Mouser Part No 576-CG34.5LTR	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP S.A. STAN 4.5KV Learn More about Littelfuse cg3 gas discharge tubes	Datasheet	1,333In Stock	Cut Tape £3.39 £2.82 £2.60 £2.16 Reel £1.64 View £1.98 £1.88 £1.59	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
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 5.0KV Standard GP Nominal CG35.0LTR Littelfuse 1: £3.46 1,877In Stock	Mfr. Part No. CG35.0LTR Mouser Part No 576-CG35.0LTR	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 5.0KV Standard GP Nominal Learn More about Littelfuse cg3 gas discharge tubes	Datasheet	1,877In Stock	Cut Tape £3.46 £2.88 £2.66 £2.20 Reel £1.65 View £2.04 £1.92 £1.63	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
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP S.A. STAN 1.0KV CG31.0 Littelfuse 1: £3.52 410In Stock	Mfr. Part No. CG31.0 Mouser Part No 576-CG31.0	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP S.A. STAN 1.0KV Learn More about Littelfuse cg3 gas discharge tubes	Datasheet	410In Stock	£3.52 £3.27 £3.15 £2.45 View £2.09 £1.98 £1.73 £1.68	Min.: 1 Mult.: 1	CG3		1 kV	2 Electrode	Axial	Failsafe Not Protected	8 mm	6 mm	- 40 C	+ 90 C	Bulk
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP S.A. 1.3KV SPECIAL LIMITS CG31.3L-01 Littelfuse 1: £3.52 366In Stock	Mfr. Part No. CG31.3L-01 Mouser Part No 576-CG31.3L-01	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP S.A. 1.3KV SPECIAL LIMITS Learn More about Littelfuse cg3 gas discharge tubes	Datasheet	366In Stock	£3.52 £3.27 £3.15 £2.45 View £2.09 £1.98 £1.72 £1.60 £1.50	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
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP S.A. STAN. 4.5KV CG34.5L Littelfuse 1: £3.46 6,299In Stock	Mfr. Part No. CG34.5L Mouser Part No 576-CG34.5L	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP S.A. STAN. 4.5KV Learn More about Littelfuse cg3 gas discharge tubes	Datasheet	6,299In Stock	£3.46 £2.88 £2.66 £2.20 View £2.04 £1.79	Min.: 1 Mult.: 1	CG3		4.5 kV	2 Electrode	Axial	Failsafe Not Protected	8 mm	6 mm	- 40 C	+ 90 C	Tray
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors STANDARD 2.5KV NOM CG32.5L Littelfuse 1: £3.50 1,510In Stock 1,400Expected 02/03/2027	Mfr. Part No. CG32.5L Mouser Part No 576-CG32.5L	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors STANDARD 2.5KV NOM Learn More about Littelfuse cg3 gas discharge tubes	Datasheet	1,510In Stock 1,400Expected 02/03/2027	£3.50 £3.20 £2.93 £2.43 View £2.14 £1.96 £1.72 £1.65	Min.: 1 Mult.: 1	CG3		2.5 kV	2 Electrode	Axial	Failsafe Not Protected	8 mm	6 mm	- 40 C	+ 90 C	Tray
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP S.A. STAN 3.0KV CG33.0LTR Littelfuse 1: £3.26 1,242In Stock 1,500Expected 22/02/2027	Mfr. Part No. CG33.0LTR Mouser Part No 576-CG33.0LTR	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP S.A. STAN 3.0KV Learn More about Littelfuse cg3 gas discharge tubes	Datasheet	1,242In Stock 1,500Expected 22/02/2027	Cut Tape £3.26 £2.71 £2.50 £2.08 Reel £2.08	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
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors Standard HV CG33.3L Littelfuse 1: £3.46 650In Stock	Mfr. Part No. CG33.3L Mouser Part No 576-CG33.3L	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors Standard HV Learn More about Littelfuse cg3 gas discharge tubes	Datasheet	650In Stock	£3.46 £2.88 £2.66 £2.20 View £2.04 £1.88 £1.79	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
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors S.A. STAN 3.3KV CG33.3LTR Littelfuse 1: £3.61 1,018In Stock	Mfr. Part No. CG33.3LTR Mouser Part No 576-CG33.3LTR	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors S.A. STAN 3.3KV Learn More about Littelfuse cg3 gas discharge tubes	Datasheet	1,018In Stock	Cut Tape £3.61 £3.02 £2.78 £2.30 View Reel £1.68 £2.12 £1.91 £1.68	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
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP S.A. STAN 4.0KV CG34.0LTR Littelfuse 1: £3.54 1,025In Stock	Mfr. Part No. CG34.0LTR Mouser Part No 576-CG34.0LTR	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP S.A. STAN 4.0KV Learn More about Littelfuse cg3 gas discharge tubes	Datasheet	1,025In Stock	Cut Tape £3.54 £2.94 £2.71 £2.25 View Reel £1.83 £2.08 £1.97 £1.83	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
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors STANDARD 5.0KV NOM CG35.0L Littelfuse 1: £3.41 653In Stock 700Expected 24/02/2027	Mfr. Part No. CG35.0L Mouser Part No 576-CG35.0L	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors STANDARD 5.0KV NOM Learn More about Littelfuse cg3 gas discharge tubes	Datasheet	653In Stock 700Expected 24/02/2027	£3.41 £2.88 £2.57 £2.20 View £2.04 £1.79	Min.: 1 Mult.: 1	CG3		5 kV	2 Electrode	Axial	Failsafe Not Protected	8 mm	6 mm	- 40 C	+ 90 C	Tray
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 7.5KV NOM CG37.5LD004 Littelfuse 1: £3.46 1,055In Stock	Mfr. Part No. CG37.5LD004 Mouser Part No 576-CG37.5LD004	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 7.5KV NOM Learn More about Littelfuse cg3 gas discharge tubes	Datasheet	1,055In Stock	£3.46 £2.88 £2.66 £2.20 View £2.04 £1.79	Min.: 1 Mult.: 1	CG3	5 kA	7.5 kV	2 Electrode	Axial	Failsafe Not Protected	8 mm	6 mm	- 40 C	+ 90 C	Tray
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP S.A. STAN. 1.0KV CG31.0L Littelfuse 1: £3.22 345In Stock 350Expected 07/01/2027	Mfr. Part No. CG31.0L Mouser Part No 576-CG31.0L	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP S.A. STAN. 1.0KV Learn More about Littelfuse cg3 gas discharge tubes	Datasheet	345In Stock 350Expected 07/01/2027	£3.22 £2.67 £2.46 £2.04 View £1.89 £1.65	Min.: 1 Mult.: 1	CG3		1 kV	2 Electrode	Axial	Failsafe Not Protected	8 mm	6 mm	- 40 C	+ 90 C	Tray
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors STANDARD 1.5KV NOM CG31.5L Littelfuse 1: £3.22 411In Stock 2,450On Order	Mfr. Part No. CG31.5L Mouser Part No 576-CG31.5L	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors STANDARD 1.5KV NOM Learn More about Littelfuse cg3 gas discharge tubes	Datasheet	411In Stock 2,450On Order On Order Ship Dates Mfr. No: CG31.5L Stock: 411 Can Dispatch Immediately On Order: 1,050 Expected 01/12/2026 1,400 Expected 07/01/2027 Factory Lead Time: 17 Weeks	£3.22 £2.67 £2.43 £2.04 View £1.85 £1.65	Min.: 1 Mult.: 1	CG3		1.5 kV	2 Electrode	Axial	Failsafe Not Protected	8 mm	6 mm	- 40 C	+ 90 C	Tray
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors STANDARD 2.0KV NOM CG32.0L Littelfuse 1: £3.20 450In Stock 350Expected 02/03/2027	Mfr. Part No. CG32.0L Mouser Part No 576-CG32.0L	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors STANDARD 2.0KV NOM Learn More about Littelfuse cg3 gas discharge tubes	Datasheet	450In Stock 350Expected 02/03/2027	£3.20 £2.83 £2.62 £2.17 View £1.94 £1.72 £1.65	Min.: 1 Mult.: 1	CG3		2 kV	2 Electrode	Axial	Failsafe Not Protected	8 mm	6 mm	- 40 C	+ 90 C	Tray
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP S.A. STAN. 2.0KV CG32.0LTR Littelfuse 1: £3.26 489In Stock 2,000Expected 09/03/2027	Mfr. Part No. CG32.0LTR Mouser Part No 576-CG32.0LTR	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP S.A. STAN. 2.0KV Learn More about Littelfuse cg3 gas discharge tubes	Datasheet	489In Stock 2,000Expected 09/03/2027	Cut Tape £3.26 £2.71 £2.50 £2.08 View Reel £1.68 £1.92 £1.80 £1.68	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
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP S.A. STAN 2.5KV CG32.5LTR Littelfuse 1: £3.46 620In Stock	Mfr. Part No. CG32.5LTR Mouser Part No 576-CG32.5LTR	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP S.A. STAN 2.5KV Learn More about Littelfuse cg3 gas discharge tubes	Datasheet	620In Stock	Cut Tape £3.46 £2.88 £2.65 £2.20 View Reel £1.68 £2.04 £1.90 £1.68	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
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 3.0KV Standard GP Nominal CG33.0 Littelfuse 1: £3.68 99In Stock	Mfr. Part No. CG33.0 Mouser Part No 576-CG33.0	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 3.0KV Standard GP Nominal Learn More about Littelfuse cg3 gas discharge tubes	Datasheet	99In Stock	£3.68 £3.05 £2.82 £2.34 View £2.16 £1.93 £1.79	Min.: 1 Mult.: 1	CG3		3 kV	2 Electrode	Axial	Failsafe Not Protected	8 mm	6 mm	- 40 C	+ 90 C	Bulk
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP S.A. STAN. 4.0KV CG34.0L Littelfuse 1: £3.68 115In Stock 1,750On Order	Mfr. Part No. CG34.0L Mouser Part No 576-CG34.0L	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP S.A. STAN. 4.0KV Learn More about Littelfuse cg3 gas discharge tubes	Datasheet	115In Stock 1,750On Order On Order Ship Dates Mfr. No: CG34.0L Stock: 115 Can Dispatch Immediately On Order: 1,400 Expected 28/01/2027 350 Expected 04/02/2027 Factory Lead Time: 17 Weeks	£3.68 £3.05 £2.82 £2.34 View £2.16 £1.86 £1.79	Min.: 1 Mult.: 1	CG3		4 kV	2 Electrode	Axial	Failsafe Not Protected	8 mm	6 mm	- 40 C	+ 90 C	Tray
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP S.A. STAN 6.5KV CG36.5LD004 Littelfuse 1: £3.36 595In Stock	Mfr. Part No. CG36.5LD004 Mouser Part No 576-CG36.5LD004	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP S.A. STAN 6.5KV Learn More about Littelfuse cg3 gas discharge tubes	Datasheet	595In Stock	£3.36 £2.88 £2.66 £2.20 View £2.04 £1.79	Min.: 1 Mult.: 1	CG3	5 kA	6.5 kV	2 Electrode	Axial	Failsafe Not Protected	8 mm	6 mm	- 40 C	+ 90 C	Bulk
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP S.A. STAN. 1.0KV CG31.0LTR Littelfuse 1: £3.26 1,000Expected 08/02/2027	Mfr. Part No. CG31.0LTR Mouser Part No 576-CG31.0LTR	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP S.A. STAN. 1.0KV Learn More about Littelfuse cg3 gas discharge tubes	Datasheet	1,000Expected 08/02/2027	Cut Tape £3.26 £2.71 £2.50 £2.08 View Reel £1.68 £1.92 £1.80 £1.68	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

CG3 High-Voltage Gas Discharge Tubes

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CG3 High-Voltage Gas Discharge Tubes

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