Gas Discharge Tubes - GDTs / Gas Plasma Arrestors – Mouser Canada

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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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Select	Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (CAD) 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
	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 1000V 3kA 8/20us UL 1449 CG41.0SM Littelfuse 1: $2.58 7,560In Stock	Mfr. Part # CG41.0SM Mouser Part # 576-CG41.0SM	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 1000V 3kA 8/20us UL 1449 Learn More about Littelfuse cg4 gdts	Datasheet	7,560In Stock	Cut Tape $2.58 $2.33 $1.92 $1.73 Reel $1.22 View $1.58 $1.43 $1.15 $1.13 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
	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 2000V 3kA 8/20us UL 1449 CG42.0SM Littelfuse 1: $2.45 581In Stock	Mfr. Part # CG42.0SM Mouser Part # 576-CG42.0SM	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 2000V 3kA 8/20us UL 1449 Learn More about Littelfuse cg4 gdts	Datasheet	581In Stock	Cut Tape $2.45 $2.25 $1.87 $1.73 View Reel $1.25 $1.56 $1.43 $1.25 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
	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 2500V 3kA 8/20us UL 1449 CG42.5SM Littelfuse 1: $2.20 980In Stock	Mfr. Part # CG42.5SM Mouser Part # 576-CG42.5SM	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 2500V 3kA 8/20us UL 1449 Learn More about Littelfuse cg4 gdts	Datasheet	980In Stock	Cut Tape $2.20 $2.03 $1.68 $1.54 View Reel $1.25 $1.39 $1.33 $1.25 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
	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 3000V 3kA 8/20us UL 1449 CG43.0SM Littelfuse 1: $2.45 248In Stock 3,000On Order	Mfr. Part # CG43.0SM Mouser Part # 576-CG43.0SM	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 3000V 3kA 8/20us UL 1449 Learn More about Littelfuse cg4 gdts	Datasheet	248In Stock 3,000On Order On Order Ship Dates Mfr. #: CG43.0SM Stock: 248 Can Ship Immediately On Order: 1,000 Expected 2026-12-14 2,000 Expected 2027-02-01 Factory Lead-Time: 14 Weeks	Cut Tape $2.45 $2.26 $1.87 $1.73 View Reel $1.25 $1.56 $1.43 $1.25 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
	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 1200V 3kA 8/20us UL 1449 CG41.2SM Littelfuse 1: $2.20 2,375On Order	Mfr. Part # CG41.2SM Mouser Part # 576-CG41.2SM	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 1200V 3kA 8/20us UL 1449 Learn More about Littelfuse cg4 gdts	Datasheet	2,375On Order On Order Ship Dates Mfr. #: CG41.2SM Stock: 0 On Order: 375 Expected 2027-01-07 1,000 Expected 2027-02-17 1,000 Expected 2027-02-23 Factory Lead-Time: 17 Weeks	Cut Tape $2.20 $2.03 $1.68 $1.56 View Reel $1.25 $1.39 $1.33 $1.25 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
	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 800V 3kA 8/20us UL 1449 CG40.8SM Littelfuse 1: $2.45 Non-Stocked Lead-Time 17 Weeks	Mfr. Part # CG40.8SM Mouser Part # 576-CG40.8SM	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 800V 3kA 8/20us UL 1449 Learn More about Littelfuse cg4 gdts	Datasheet	Non-Stocked Lead-Time 17 Weeks	Cut Tape $2.45 $2.26 $1.87 $1.73 View Reel $1.25 $1.56 $1.43 $1.25 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
	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 1800V 3kA 8/20us UL 1449 CG41.8SM Littelfuse 1: $2.20 Non-Stocked Lead-Time 14 Weeks	Mfr. Part # CG41.8SM Mouser Part # 576-CG41.8SM	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 1800V 3kA 8/20us UL 1449 Learn More about Littelfuse cg4 gdts	Datasheet	Non-Stocked Lead-Time 14 Weeks	Cut Tape $2.20 $2.03 $1.68 $1.56 View Reel $1.25 $1.39 $1.33 $1.25 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
	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 2700V 3kA 8/20us UL 1449 CG42.7SM Littelfuse 1: $2.33 Non-Stocked Lead-Time 14 Weeks	Mfr. Part # CG42.7SM Mouser Part # 576-CG42.7SM	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 2700V 3kA 8/20us UL 1449 Learn More about Littelfuse cg4 gdts	Datasheet	Non-Stocked Lead-Time 14 Weeks	Cut Tape $2.33 $2.15 $1.79 $1.66 View Reel $1.25 $1.48 $1.28 $1.25 MouseReel Available	Min.: 1 Mult.: 1 : 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, Cut Tape, MouseReel