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 (IDR) 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 Standard HV Nominal CG32.7L Littelfuse 1: Rp85.125 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	Rp85.125 Rp70.816 Rp65.312 Rp54.121 View Rp49.901 Rp43.113 Rp42.196 Rp38.343	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: Rp83.291 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 Rp83.291 Rp70.816 Rp65.312 Rp54.121 Reel Rp41.095 View Rp49.167 Rp47.149 Rp40.912 Rp38.343	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: Rp83.291 1.554In 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	1.554In Stock	Cut Tape Rp83.291 Rp69.164 Rp63.844 Rp53.020 Reel Rp42.012 View Rp48.800 Rp46.048 Rp39.994 Rp37.426	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: Rp93.932 1.902In 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	1.902In Stock	Cut Tape Rp93.932 Rp78.521 Rp72.467 Rp60.175 Reel Rp43.663 View Rp55.405 Rp49.901 Rp40.912 Rp38.343	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 3.0KV Standard GP Nominal CG33.0 Littelfuse 1: Rp89.528 614In 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	614In Stock	Rp89.528 Rp78.888 Rp64.028 Rp54.671 View Rp49.534 Rp47.883 Rp43.847 Rp38.527 Rp38.343	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. 1.2KV CG31.2L Littelfuse 1: Rp79.071 1.885In 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	1.885In Stock	Rp79.071 Rp65.679 Rp60.542 Rp50.268 View Rp46.415 Rp39.994 Rp36.692 Rp35.408	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 2.5KV CG32.5LTR Littelfuse 1: Rp85.125 950In 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	950In Stock	Cut Tape Rp85.125 Rp70.632 Rp65.128 Rp54.121 Reel Rp41.095 View Rp49.901 Rp46.782 Rp38.160 Rp35.958	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 GP S.A. STAN 1.0KV CG31.0 Littelfuse 1: Rp86.593 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	Rp86.593 Rp80.355 Rp77.420 Rp60.175 View Rp51.369 Rp48.800 Rp42.563 Rp41.279	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. STAN 1.3KV CG31.3L Littelfuse 1: Rp82.924 350In Stock	Mfr. Part No. CG31.3L Mouser Part No 576-CG31.3L	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP S.A. STAN 1.3KV Learn More about Littelfuse cg3 gas discharge tubes	Datasheet	350In Stock	Rp82.924 Rp73.017 Rp68.981 Rp55.221 View Rp48.800 Rp42.196 Rp36.692 Rp35.408	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. 1.3KV SPECIAL LIMITS CG31.3L-01 Littelfuse 1: Rp86.593 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	Rp86.593 Rp80.355 Rp77.420 Rp60.175 View Rp51.369 Rp48.800 Rp42.379 Rp39.260 Rp36.692	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: Rp85.125 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	Rp85.125 Rp70.816 Rp65.312 Rp54.121 View Rp49.901 Rp44.030	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 GP S.A. STAN. 1.5KV CG31.5LTR Littelfuse 1: Rp83.658 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 Rp83.658 Rp74.118 Rp68.247 Rp56.689 View Reel Rp41.279 Rp51.552 Rp46.966 Rp41.279	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 2.5KV NOM CG32.5L Littelfuse 1: Rp79.071 1.624In Stock 1.400Expected 08/02/2027	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	1.624In Stock 1.400Expected 08/02/2027	Rp79.071 Rp65.679 Rp60.542 Rp50.268 View Rp46.415 Rp40.545	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: Rp84.025 1.842In 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	1.842In Stock 1.500Expected 22/02/2027	Cut Tape Rp84.025 Rp70.632 Rp65.128 Rp54.121 View Reel Rp41.279 Rp49.901 Rp46.782 Rp41.279	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: Rp85.125 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	Rp85.125 Rp70.816 Rp65.312 Rp54.121 View Rp49.901 Rp46.048 Rp44.030	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: Rp88.611 1.063In 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	1.063In Stock	Cut Tape Rp88.611 Rp74.118 Rp68.247 Rp56.689 View Reel Rp41.279 Rp52.103 Rp46.966 Rp41.279	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: Rp86.960 1.192In 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	1.192In Stock	Cut Tape Rp86.960 Rp72.283 Rp66.596 Rp55.405 View Reel Rp45.131 Rp51.002 Rp48.250 Rp45.131	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: Rp84.208 703In Stock 700Expected 02/02/2027	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	703In Stock 700Expected 02/02/2027	Rp84.208 Rp70.816 Rp64.761 Rp54.121 View Rp48.984 Rp44.030	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: Rp90.262 620In Stock 700Expected 14/12/2026	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	620In Stock 700Expected 14/12/2026	Rp90.262 Rp75.035 Rp69.164 Rp57.423 View Rp53.020 Rp45.682 Rp44.030	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: Rp79.071 345In Stock 350Expected 11/01/2027	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 11/01/2027	Rp79.071 Rp65.679 Rp60.542 Rp50.268 View Rp46.415 Rp40.545	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: Rp77.237 451In 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	451In Stock 2.450On Order On Order Ship Dates Mfr. No: CG31.5L Stock: 451 Can Dispatch Immediately On Order: 1.050 Expected 24/12/2026 1.400 Expected 11/01/2027 Factory Lead Time: 17 Weeks	Rp77.237 Rp66.046 Rp58.707 Rp49.351 View Rp44.030 Rp42.746 Rp42.379 Rp40.545	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: Rp79.438 450In Stock 350Expected 17/02/2027	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 17/02/2027	Rp79.438 Rp69.531 Rp64.211 Rp53.203 View Rp48.067 Rp42.379 Rp40.545	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: Rp80.172 489In Stock 2.000Expected 18/02/2027	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 18/02/2027	Cut Tape Rp80.172 Rp66.596 Rp61.459 Rp51.002 View Reel Rp41.279 Rp47.149 Rp44.214 Rp41.279	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. 4.0KV CG34.0L Littelfuse 1: Rp90.262 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: 1.050 Expected 28/01/2027 700 Expected 02/02/2027 Factory Lead Time: 17 Weeks	Rp90.262 Rp75.035 Rp69.164 Rp57.423 View Rp53.020 Rp45.682 Rp44.030	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: Rp83.107 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	Rp83.107 Rp70.816 Rp65.312 Rp54.121 View Rp49.901 Rp44.030	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

CG3 High-Voltage Gas Discharge Tubes

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