Gas Discharge Tubes - GDTs / Gas Plasma Arrestors

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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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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (CAD) 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. 470V CG2470LTR Littelfuse 1: $4.12 1,612In Stock	Mfr. Part # CG2470LTR Mouser Part # 576-CG2470LTR	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP S.A. STAN. 470V Learn More about Littelfuse cg2 gdts	Datasheet	1,612In Stock	Cut Tape $4.12 $3.28 $2.71 Reel $2.45 $2.22	Min.: 1 Mult.: 1 : 500	CG2	20 kA	470 V	2 Electrode	Axial	Failsafe Not Protected	8.1 mm	6.07 mm	- 40 C	+ 90 C	Reel, Cut Tape
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP S.A. STAN. 1000V CG21000LTR Littelfuse 1: $5.08 1,662In Stock	Mfr. Part # CG21000LTR Mouser Part # 576-CG21000LTR	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP S.A. STAN. 1000V Learn More about Littelfuse cg2 gdts	Datasheet	1,662In Stock	Cut Tape $5.08 $3.90 $3.23 Reel $2.51 $2.43	Min.: 1 Mult.: 1 : 500	CG2	10 kA	1 kV	2 Electrode	Axial	Failsafe Not Protected	8.1 mm	6.07 mm	- 40 C	+ 90 C	Reel, Cut Tape
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors STANDARD 1000V MS CG21000MS Littelfuse 1: $4.09 1,723In Stock	Mfr. Part # CG21000MS Mouser Part # 576-CG21000MS	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors STANDARD 1000V MS Learn More about Littelfuse cg2 gdts	Datasheet	1,723In Stock	Cut Tape $4.09 $3.12 $2.65 Reel $2.39 $2.16 $2.15 MouseReel Available	Min.: 1 Mult.: 1 : 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
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP S.A. STAN. 800V CG2800LTR Littelfuse 1: $5.08 1,433In Stock	Mfr. Part # CG2800LTR Mouser Part # 576-CG2800LTR	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP S.A. STAN. 800V Learn More about Littelfuse cg2 gdts	Datasheet	1,433In Stock	Cut Tape $5.08 $3.90 $3.23 Reel $2.66 $2.43	Min.: 1 Mult.: 1 : 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
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors STANDARD 230V MS CG2230MS Littelfuse 1: $3.23 925In Stock	Mfr. Part # CG2230MS Mouser Part # 576-CG2230MS	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors STANDARD 230V MS Learn More about Littelfuse cg2 gdts	Datasheet	925In Stock	Cut Tape $3.23 $2.75 $2.48 Reel $2.25 $2.15 MouseReel Available	Min.: 1 Mult.: 1 : 500	CG2	20 kA	230 V	2 Electrode	SMD/SMT	Failsafe Not Protected	8.3 mm	6.05 mm	- 40 C	+ 90 C	Reel, Cut Tape, MouseReel
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP S.A. STANDARD 470V NOMINAL SMT CG2470LSTR Littelfuse 1: $4.35 772In Stock	Mfr. Part # CG2470LSTR Mouser Part # 576-CG2470LSTR	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP S.A. STANDARD 470V NOMINAL SMT Learn More about Littelfuse cg2 gdts	Datasheet	772In Stock	Cut Tape $4.35 $3.82 $3.21 Reel $2.65 $2.42	Min.: 1 Mult.: 1 : 500	CG2	20 kA	470 V	2 Electrode	Axial	Failsafe Not Protected	8.1 mm	6.07 mm	- 40 C	+ 90 C	Reel, Cut Tape
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP S.A. STAN. 350V CG2350 Littelfuse 1: $6.18 785In Stock	Mfr. Part # CG2350 Mouser Part # 576-CG2350	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP S.A. STAN. 350V Learn More about Littelfuse cg2 gdts	Datasheet	785In Stock	$6.18 $2.59 $2.20 $2.19	Min.: 1 Mult.: 1	CG2	20 kA	350 V	2 Electrode	SMD/SMT	Failsafe Not Protected	8.1 mm	6.07 mm	- 40 C	+ 90 C	Bulk
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP S.A. STANDARD 800V NOMINAL SMT CG2800LS Littelfuse 1: $6.77 500In Stock	Mfr. Part # CG2800LS Mouser Part # 576-CG2800LS	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP S.A. STANDARD 800V NOMINAL SMT Learn More about Littelfuse cg2 gdts	Datasheet	500In Stock	Cut Tape $6.77 $4.48 $3.57 Reel $3.15 $2.97 $2.88	Min.: 1 Mult.: 1 : 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
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors STANDARD 230V NOM CG2230 Littelfuse 1: $6.18 566In Stock	Mfr. Part # CG2230 Mouser Part # 576-CG2230	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors STANDARD 230V NOM Learn More about Littelfuse cg2 gdts	Datasheet	566In Stock	$6.18 $2.56 $2.19	Min.: 1 Mult.: 1	CG2	20 kA	230 V	2 Electrode	SMD/SMT	Failsafe Not Protected	8.1 mm	6.07 mm	- 40 C	+ 90 C	Bulk
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 145V MS GP S.A. STANDARD CG2145MS Littelfuse 1: $5.83 520In Stock	Mfr. Part # CG2145MS Mouser Part # 576-CG2145MS	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 145V MS GP S.A. STANDARD Learn More about Littelfuse cg2 gdts	Datasheet	520In Stock	Cut Tape $5.83 $4.19 $3.18 Reel $2.75 $2.65 MouseReel Available	Min.: 1 Mult.: 1 : 500	CG2	20 kA	145 V	2 Electrode	SMD/SMT	Failsafe Not Protected	8.3 mm	6.05 mm	- 40 C	+ 90 C	Reel, Cut Tape, MouseReel
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors STANDARD 145V NOM CG2145L Littelfuse 1: $4.09 3,248In Stock	Mfr. Part # CG2145L Mouser Part # 576-CG2145L	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors STANDARD 145V NOM Learn More about Littelfuse cg2 gdts	Datasheet	3,248In Stock	$4.09 $3.14 $2.49 $2.48	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
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors STANDARD 300V NOM CG2300L Littelfuse 1: $4.09 855In Stock	Mfr. Part # CG2300L Mouser Part # 576-CG2300L	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors STANDARD 300V NOM Learn More about Littelfuse cg2 gdts	Datasheet	855In Stock	$4.09 $3.14 $2.49 $2.48	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
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors STANDARD 600V NOM CG2600L Littelfuse 1: $4.46 830In Stock	Mfr. Part # CG2600L Mouser Part # 576-CG2600L	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors STANDARD 600V NOM Learn More about Littelfuse cg2 gdts	Datasheet	830In Stock	$4.46 $3.24 $2.76 $2.72	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
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors STANDARD 800V NOM CG2800L Littelfuse 1: $4.46 1,542In Stock	Mfr. Part # CG2800L Mouser Part # 576-CG2800L	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors STANDARD 800V NOM Learn More about Littelfuse cg2 gdts	Datasheet	1,542In Stock	$4.46 $3.41 $2.72	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
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 800V MS GP S.A. STANDARD CG2800MS Littelfuse 1: $4.09 2,203In Stock	Mfr. Part # CG2800MS Mouser Part # 576-CG2800MS	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 800V MS GP S.A. STANDARD Learn More about Littelfuse cg2 gdts	Datasheet	2,203In Stock	Cut Tape $4.09 $3.14 $2.65 Reel $2.48 MouseReel Available	Min.: 1 Mult.: 1 : 500	CG2	10 kA	800 V	2 Electrode	SMD/SMT	Failsafe Not Protected	8.3 mm	6.05 mm	- 40 C	+ 90 C	Reel, Cut Tape, MouseReel
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP S.A. STAN. 1000V CG21000 Littelfuse 1: $4.00 657In Stock	Mfr. Part # CG21000 Mouser Part # 576-CG21000	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP S.A. STAN. 1000V Learn More about Littelfuse cg2 gdts	Datasheet	657In Stock	$4.00 $3.07 $2.55 $2.42	Min.: 1 Mult.: 1	CG2	20 kA	1 kV	2 Electrode	SMD/SMT	Failsafe Not Protected	8.1 mm	6.07 mm	- 40 C	+ 90 C	Bulk
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 1000V MS TR GP S.A. STANDARD CG21000MSTR Littelfuse 1: $5.14 396In Stock 500Expected 2027-02-04	Mfr. Part # CG21000MSTR Mouser Part # 576-CG21000MSTR	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 1000V MS TR GP S.A. STANDARD Learn More about Littelfuse cg2 gdts	Datasheet	396In Stock 500Expected 2027-02-04	Cut Tape $5.14 $3.93 $3.25 Reel $2.82 MouseReel Available	Min.: 1 Mult.: 1 : 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
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors STANDARD 230V NOM CG2230L Littelfuse 1: $4.09 334In Stock 700Expected 2026-11-17	Mfr. Part # CG2230L Mouser Part # 576-CG2230L	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors STANDARD 230V NOM Learn More about Littelfuse cg2 gdts	Datasheet	334In Stock 700Expected 2026-11-17	$4.09 $3.14 $2.59 $2.58 $2.48	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
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP S.A. STAN. 230V CG2230LTR Littelfuse 1: $4.46 31In Stock 1,000Expected 2026-11-16	Mfr. Part # CG2230LTR Mouser Part # 576-CG2230LTR	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP S.A. STAN. 230V Learn More about Littelfuse cg2 gdts	Datasheet	31In Stock 1,000Expected 2026-11-16	Cut Tape $4.46 $3.41 $2.89 Reel $2.59 $2.55	Min.: 1 Mult.: 1 : 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
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP S.A. STAN. 250V CG2250L Littelfuse 1: $4.33 14In Stock 1,050On Order	Mfr. Part # CG2250L Mouser Part # 576-CG2250L	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP S.A. STAN. 250V Learn More about Littelfuse cg2 gdts	Datasheet	14In Stock 1,050On Order On Order Ship Dates Mfr. #: CG2250L Stock: 14 Can Ship Immediately On Order: 350 Expected 2026-11-11 700 Expected 2026-12-02 Factory Lead-Time: 17 Weeks	$4.33 $3.33 $2.65 $2.48	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
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors STANDARD 350V NOM CG2350L Littelfuse 1: $4.91 5In Stock 2,100On Order	Mfr. Part # CG2350L Mouser Part # 576-CG2350L	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors STANDARD 350V NOM Learn More about Littelfuse cg2 gdts	Datasheet	5In Stock 2,100On Order On Order Ship Dates Mfr. #: CG2350L Stock: 5 Can Ship Immediately On Order: 700 Expected 2027-02-25 1,400 Expected 2027-03-01 Factory Lead-Time: 17 Weeks	$4.91 $3.14 $2.49 $2.48	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
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP S.A. STAN. 350V CG2350LTR Littelfuse 1: $4.68 276In Stock	Mfr. Part # CG2350LTR Mouser Part # 576-CG2350LTR	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP S.A. STAN. 350V Learn More about Littelfuse cg2 gdts	Datasheet	276In Stock	Cut Tape $4.68 $3.59 $2.97 Reel $2.55	Min.: 1 Mult.: 1 : 500	CG2	20 kA	350 V	2 Electrode	Axial	Failsafe Not Protected	8.1 mm	6.07 mm	- 40 C	+ 90 C	Reel, Cut Tape
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors STANDARD 350V MS CG2350MS Littelfuse 1: $4.54 475In Stock	Mfr. Part # CG2350MS Mouser Part # 576-CG2350MS	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors STANDARD 350V MS Learn More about Littelfuse cg2 gdts	Datasheet	475In Stock	Cut Tape $4.54 $3.48 $2.88 Reel $2.48 MouseReel Available	Min.: 1 Mult.: 1 : 500	CG2	20 kA	350 V	2 Electrode	SMD/SMT	Failsafe Not Protected	8.3 mm	6.05 mm	- 40 C	+ 90 C	Reel, Cut Tape, MouseReel
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors STANDARD 420V NOM CG2420L Littelfuse 1: $4.09 263In Stock	Mfr. Part # CG2420L Mouser Part # 576-CG2420L	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors STANDARD 420V NOM Learn More about Littelfuse cg2 gdts	Datasheet	263In Stock	$4.09 $3.14 $2.49 $2.48	Min.: 1 Mult.: 1	CG2	20 kA	420 V	2 Electrode	Axial	Failsafe Not Protected	8.1 mm	6.07 mm	- 40 C	+ 90 C	Tray
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors STANDARD 470V NOM CG2470L Littelfuse 1: $4.09 614In Stock 700Expected 2027-02-18	Mfr. Part # CG2470L Mouser Part # 576-CG2470L	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors STANDARD 470V NOM Learn More about Littelfuse cg2 gdts	Datasheet	614In Stock 700Expected 2027-02-18	$4.09 $3.14 $2.49 $2.48	Min.: 1 Mult.: 1	CG2	20 kA	470 V	2 Electrode	Axial	Failsafe Not Protected	8.1 mm	6.07 mm	- 40 C	+ 90 C	Tray

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