Gas Discharge Tubes - GDTs / Gas Plasma Arrestors

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SG Gas Discharge Tubes

Littelfuse SG Gas Discharge Tubes (GDT) offer high surge ratings in a miniature package and are designed for surface mounting on PCB with a small size of 4.5mm x 3.2mm x 2.7mm. The GDTs' low insertion loss is perfectly suited to broadband equipment applications. Their capacitance does not vary with voltage, and will not cause operational problems with ADSL2+, where capacitance variation across Tip and Ring is undesirable. Littelfuse SG Gas Discharge Tubes are extremely robust and are able to divert a 1000A pulse without destruction.

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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	Length	Minimum Operating Temperature	Maximum Operating Temperature	Packaging
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 315-525V 2A GDT T/R 2 Term SG420 Littelfuse 1: $2.06 2,525In Stock	Mfr. Part # SG420 Mouser Part # 576-SG420	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 315-525V 2A GDT T/R 2 Term Learn More about Littelfuse sg series sgdt	Datasheet	2,525In Stock	Cut Tape $2.06 $1.54 $1.29 $1.18 Reel $0.916 View $1.11 $1.02 $0.962 $0.90 MouseReel Available	Min.: 1 Mult.: 1 : 2,000	SG	1 kA	420 V	2 Electrode	SMD/SMT	Failsafe Not Protected	4.5 mm	- 40 C	+ 90 C	Reel, Cut Tape, MouseReel
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 263-437V 2A GDT T/R 2 Term SG350 Littelfuse 1: $2.06 1,995In Stock	Mfr. Part # SG350 Mouser Part # 576-SG350	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 263-437V 2A GDT T/R 2 Term Learn More about Littelfuse sg series sgdt	Datasheet	1,995In Stock	Cut Tape $2.06 $1.90 $1.57 $1.45 Reel $0.916 View $1.30 $1.20 $1.11 $0.90 MouseReel Available	Min.: 1 Mult.: 1 : 2,000	SG	1 kA	350 V	2 Electrode	SMD/SMT	Failsafe Not Protected	4.5 mm	- 40 C	+ 90 C	Reel, Cut Tape, MouseReel
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 263-437V GDT T/R 2 Term SG350Q Littelfuse 1: $1.86 18,190In Stock 8,000Expected 2027-03-04	Mfr. Part # SG350Q Mouser Part # 576-SG350Q	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 263-437V GDT T/R 2 Term Learn More about Littelfuse sg series sgdt	Datasheet	18,190In Stock 8,000Expected 2027-03-04	Cut Tape $1.86 $1.71 $1.41 $1.30 View Reel $1.03 $1.17 $1.10 $1.03 MouseReel Available	Min.: 1 Mult.: 1 : 2,000	SG	1 kA	350 V	2 Electrode	SMD/SMT	Failsafe Not Protected	4.5 mm	- 40 C	+ 90 C	Reel, Cut Tape, MouseReel
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 300-500V 2A GDT T/R 2 Term SG400 Littelfuse 1: $1.86 4,016In Stock	Mfr. Part # SG400 Mouser Part # 576-SG400	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 300-500V 2A GDT T/R 2 Term Learn More about Littelfuse sg series sgdt	Datasheet	4,016In Stock	Cut Tape $1.86 $1.71 $1.56 $1.36 Reel $1.11 View $1.27 $1.20 $1.13 $1.03 MouseReel Available	Min.: 1 Mult.: 1 : 2,000	SG	1 kA	400 V	2 Electrode	SMD/SMT	Failsafe Not Protected	4.5 mm	- 40 C	+ 90 C	Reel, Cut Tape, MouseReel
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 63-117V 2A GDT T/R 2 Term SG90 Littelfuse 1: $2.06 6,139In Stock	Mfr. Part # SG90 Mouser Part # 576-SG90	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 63-117V 2A GDT T/R 2 Term Learn More about Littelfuse SGGDT	Datasheet	6,139In Stock	Cut Tape $2.06 $1.90 $1.57 $1.45 View Reel $1.03 $1.30 $1.20 $1.11 $1.03 MouseReel Available	Min.: 1 Mult.: 1 : 2,000	SG	2 kA	90 V	2 Electrode	SMD/SMT	Failsafe Not Protected	4.5 mm	- 40 C	+ 90 C	Reel, Cut Tape, MouseReel
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 105-195V 2A GDT T/R 2 Term SG150 Littelfuse 1: $1.96 977In Stock 2,000Expected 2026-11-06	Mfr. Part # SG150 Mouser Part # 576-SG150	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 105-195V 2A GDT T/R 2 Term Learn More about Littelfuse sg series sgdt	Datasheet	977In Stock 2,000Expected 2026-11-06	Cut Tape $1.96 $1.81 $1.50 $1.38 View Reel $1.03 $1.24 $1.17 $1.14 $1.03 MouseReel Available	Min.: 1 Mult.: 1 : 2,000	SG	2 kA	150 V	2 Electrode	SMD/SMT	Failsafe Not Protected	4.5 mm	- 40 C	+ 90 C	Reel, Cut Tape, MouseReel
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 172-288V 2A GDT T/R 2 Term SG230 Littelfuse 1: $2.06 343In Stock 4,000Expected 2027-02-24	Mfr. Part # SG230 Mouser Part # 576-SG230	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 172-288V 2A GDT T/R 2 Term Learn More about Littelfuse sg series sgdt	Datasheet	343In Stock 4,000Expected 2027-02-24	Cut Tape $2.06 $1.90 $1.57 $1.45 View Reel $1.03 $1.30 $1.20 $1.11 $1.03 MouseReel Available	Min.: 1 Mult.: 1 : 2,000	SG	1 kA	230 V	2 Electrode	SMD/SMT	Failsafe Not Protected	4.5 mm	- 40 C	+ 90 C	Reel, Cut Tape, MouseReel
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 52-98V 2A GDT T/R 2 Term SG75 Littelfuse 1: $1.96 1,601In Stock 30,000On Order	Mfr. Part # SG75 Mouser Part # 576-SG75	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 52-98V 2A GDT T/R 2 Term Learn More about Littelfuse sg series sgdt	Datasheet	1,601In Stock 30,000On Order On Order Ship Dates Mfr. #: SG75 Stock: 1,601 Can Ship Immediately On Order: 8,000 Expected 2026-11-10 10,000 Expected 2027-02-01 12,000 Expected 2027-02-11 Factory Lead-Time: 17 Weeks	Cut Tape $1.96 $1.81 $1.50 $1.38 View Reel $1.03 $1.24 $1.17 $1.14 $1.03 MouseReel Available	Min.: 1 Mult.: 1 : 2,000	SG	2 kA	75 V	2 Electrode	SMD/SMT	Failsafe Not Protected	4.5 mm	- 40 C	+ 90 C	Reel, Cut Tape, MouseReel
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 225-375V 2A GDT T/R 2 Term SG300 Littelfuse 1: $1.86 19,985On Order	Mfr. Part # SG300 Mouser Part # 576-SG300	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 225-375V 2A GDT T/R 2 Term Learn More about Littelfuse sg series sgdt	Datasheet	19,985On Order On Order Ship Dates Mfr. #: SG300 Stock: 0 On Order: 9,985 Expected 2027-03-01 6,000 Expected 2027-03-03 4,000 Expected 2027-03-04 Factory Lead-Time: 17 Weeks	Cut Tape $1.86 $1.71 $1.41 $1.30 View Reel $1.03 $1.17 $1.10 $1.03 MouseReel Available	Min.: 1 Mult.: 1 : 2,000	SG	1 kA	300 V	2 Electrode	SMD/SMT	Failsafe Not Protected	4.5 mm	- 40 C	+ 90 C	Reel, Cut Tape, MouseReel
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 210-390V GDT T/R 2 Term SG300Q Littelfuse 2,000: $1.03 Non-Stocked Lead-Time 17 Weeks	Mfr. Part # SG300Q Mouser Part # 576-SG300Q	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 210-390V GDT T/R 2 Term Learn More about Littelfuse sg series sgdt	Datasheet	Non-Stocked Lead-Time 17 Weeks	Reel $1.03	Min.: 2,000 Mult.: 2,000 : 2,000	SG	1 kA	300 V	2 Electrode	SMD/SMT	Failsafe Not Protected	4.5 mm	- 40 C	+ 90 C	Reel
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 315-525V GDT T/R 2 Term SG420Q Littelfuse 2,000: $1.11 Non-Stocked Lead-Time 17 Weeks	Mfr. Part # SG420Q Mouser Part # 576-SG420Q	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 315-525V GDT T/R 2 Term Learn More about Littelfuse sg series sgdt	Datasheet	Non-Stocked Lead-Time 17 Weeks	Reel $1.11	Min.: 2,000 Mult.: 2,000 : 2,000	SG	1 kA	420 V	2 Electrode	SMD/SMT	Failsafe Not Protected	4.5 mm	- 40 C	+ 90 C	Reel

SG Gas Discharge Tubes

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SG Gas Discharge Tubes

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