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 (EUR) 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: € 0,783 2 525In Stock	Mfr. Part No. SG420 Mouser Part No 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 € 0,783 € 0,651 € 0,581 € 0,56 Reel € 0,56 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: € 1,23 1 995In Stock	Mfr. Part No. SG350 Mouser Part No 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 € 1,23 € 0,937 € 0,777 € 0,718 € 0,622 Reel € 0,56 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: € 1,11 6 290In Stock 12 000Expected 19/10/2026	Mfr. Part No. SG350Q Mouser Part No 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	6 290In Stock 12 000Expected 19/10/2026	Cut Tape € 1,11 € 0,844 € 0,70 € 0,659 € 0,639 Reel € 0,616 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: € 1,11 4 016In Stock	Mfr. Part No. SG400 Mouser Part No 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 € 1,11 € 0,844 € 0,839 € 0,718 € 0,673 Reel € 0,616 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: € 1,23 10 139In Stock	Mfr. Part No. SG90 Mouser Part No 576-SG90	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 63-117V 2A GDT T/R 2 Term Learn More about Littelfuse SGGDT	Datasheet	10 139In Stock	Cut Tape € 1,23 € 0,937 € 0,777 € 0,716 € 0,66 Reel € 0,616 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 172-288V 2A GDT T/R 2 Term SG230 Littelfuse 1: € 1,23 343In Stock 4 000Expected 18/01/2027	Mfr. Part No. SG230 Mouser Part No 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 18/01/2027	Cut Tape € 1,23 € 1,14 € 0,937 € 0,777 View Reel € 0,616 € 0,716 € 0,657 € 0,616 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 225-375V 2A GDT T/R 2 Term SG300 Littelfuse 1: € 1,11 42In Stock 10 000On Order	Mfr. Part No. SG300 Mouser Part No 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	42In Stock 10 000On Order On Order Ship Dates Mfr. No: SG300 Stock: 42 Can Dispatch Immediately On Order: 6 000 Expected 21/01/2027 4 000 Expected 25/01/2027 Factory Lead Time: 17 Weeks	Cut Tape € 1,11 € 0,844 € 0,70 € 0,659 € 0,639 Reel € 0,616 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 52-98V 2A GDT T/R 2 Term SG75 Littelfuse 1: € 1,17 459In Stock 32 000On Order	Mfr. Part No. SG75 Mouser Part No 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	459In Stock 32 000On Order On Order Ship Dates Mfr. No: SG75 Stock: 459 Can Dispatch Immediately On Order: 2 000 Pending 8 000 Expected 08/12/2026 10 000 Expected 01/02/2027 12 000 Expected 11/02/2027 Factory Lead Time: 17 Weeks	Cut Tape € 1,17 € 0,894 € 0,79 Reel € 0,79 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 105-195V 2A GDT T/R 2 Term SG150 Littelfuse 1: € 1,17 3 982Expected 24/11/2026	Mfr. Part No. SG150 Mouser Part No 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	3 982Expected 24/11/2026	Cut Tape € 1,17 € 0,894 € 0,79 Reel € 0,79 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 210-390V GDT T/R 2 Term SG300Q Littelfuse 2 000: € 0,616 Non-Stocked Lead-Time 17 Weeks	Mfr. Part No. SG300Q Mouser Part No 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 € 0,616	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: € 0,662 Non-Stocked Lead-Time 17 Weeks	Mfr. Part No. SG420Q Mouser Part No 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 € 0,662	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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