Gas Discharge Tubes

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Littelfuse Gas Discharge Tubes (GDTs) are designed for high-voltage transient surge protection in small devices. Littelfuse GDTs are designed to dissipate large amounts of energy and are ideal for lightning surge protection. GDTs are widely applied to outdoor telecommunications equipment. These Littelfuse devices are available in leaded and surface-mount configurations.

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (SGD) 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 6MM 350V2POLE SMT GDT GTCS26-351M-R05-2 Littelfuse 1: $1.66 613In Stock 750Expected 2/2/2027	Mfr. Part No. GTCS26-351M-R05-2 Mouser Part No 650-GTCS26-351M-R052	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 6MM 350V2POLE SMT GDT Learn More about Littelfuse gas discharge tubes	Datasheet	613In Stock 750Expected 2/2/2027	Cut Tape $1.66 $1.52 $1.26 $1.15 View Reel $0.915 $1.05 $0.921 $0.915 MouseReel Available	Min.: 1 Mult.: 1 : 750	GTCx2-R	5 kA	350 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 6MM 75V 2POLE SMT GDT GTCS26-750M-R05-2 Littelfuse 1: $1.78 234In Stock	Mfr. Part No. GTCS26-750M-R05-2 Mouser Part No 650-GTCS26-750M-R052	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 6MM 75V 2POLE SMT GDT Learn More about Littelfuse gas discharge tubes	Datasheet	234In Stock	Cut Tape $1.78 $1.65 $1.62 $1.40 View Reel $1.07 $1.13 $1.10 $1.07 MouseReel Available	Min.: 1 Mult.: 1 : 750	GTCx2-R	5 kA	75 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 5MM 400V 3POLE SMT GDT GTCS35-401M-R05-2 Littelfuse 1: $3.03 2,575In Stock	Mfr. Part No. GTCS35-401M-R05-2 Mouser Part No 650-GTCS35-401M-R052	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 5MM 400V 3POLE SMT GDT Learn More about Littelfuse gas discharge tubes	Datasheet	2,575In Stock	Cut Tape $3.03 $2.60 $2.09 $1.78 View Reel $1.29 $1.73 $1.48 $1.29 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	GTCx3-R	5 kA	400 V	3 Electrode	SMD/SMT	Failsafe Not Protected	5 mm	7.6 mm	- 40 C	+ 90 C	Reel, Cut Tape, MouseReel
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GTCS35-601M-R05-2 Littelfuse 1: $2.24 752In Stock	Mfr. Part No. GTCS35-601M-R05-2 Mouser Part No 650-GTCS35-601M-R052	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors Learn More about Littelfuse gas discharge tubes	Datasheet	752In Stock	Cut Tape $2.24 $2.08 $1.73 $1.59 View Reel $1.31 $1.43 $1.39 $1.31 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	GTCx3-R	5 kA	600 V	3 Electrode	SMD/SMT	Failsafe Not Protected	5 mm	7.6 mm	- 40 C	+ 90 C	Reel, Cut Tape, MouseReel
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 5MM 90V 3POLE SMT GDT GTCS35-900M-R05-2 Littelfuse 1: $2.24 775In Stock 1,000Expected 15/12/2026	Mfr. Part No. GTCS35-900M-R05-2 Mouser Part No 650-GTCS35-900MR05-2	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 5MM 90V 3POLE SMT GDT Learn More about Littelfuse gas discharge tubes	Datasheet	775In Stock 1,000Expected 15/12/2026	Cut Tape $2.24 $2.08 $1.73 $1.59 View Reel $1.29 $1.43 $1.39 $1.29 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	GTCx3-R	5 kA	90 V	3 Electrode	SMD/SMT	Failsafe Not Protected	5 mm	7.6 mm	- 40 C	+ 90 C	Reel, Cut Tape, MouseReel
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 5MM 75V 3POLE SMT GDT GTCS35-750M-R05-2 Littelfuse 1: $3.01 92,998On Order	Mfr. Part No. GTCS35-750M-R05-2 Mouser Part No 650-GTCS35-750MR05-2	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 5MM 75V 3POLE SMT GDT Learn More about Littelfuse gas discharge tubes	Datasheet	92,998On Order On Order Ship Dates Mfr. No: GTCS35-750M-R05-2 Stock: 0 On Order: 12,998 Expected 4/11/2026 28,000 Expected 15/12/2026 52,000 Expected 3/2/2027 Factory Lead Time: 15 Weeks	Cut Tape $3.01 $2.50 $2.30 $1.92 View Reel $1.44 $1.77 $1.59 $1.55 $1.44 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	GTCx3-R	5 kA	75 V	3 Electrode	SMD/SMT	Failsafe Not Protected	5 mm	7.6 mm	- 40 C	+ 90 C	Reel, Cut Tape, MouseReel
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 5MM 350V 2POLE SMT GDT GTCS25-351M-R02 Littelfuse 1: $4.27 960Expected 4/1/2027	Mfr. Part No. GTCS25-351M-R02 Mouser Part No 650-GTCS25-351M-R02	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 5MM 350V 2POLE SMT GDT Learn More about Littelfuse gas discharge tubes	Datasheet	960Expected 4/1/2027	$4.27 $3.55 $3.28 $2.72 View $2.50 $2.26 $2.14	Min.: 1 Mult.: 1	GTCx2-R	2.5 kA	350 V	2 Electrode	SMD/SMT	Failsafe Not Protected	5 mm	4.4 mm	- 40 C	+ 90 C	Tray
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 6MM 100V 2POLE NO LEADS GDT GTCN26-101M-R05 Littelfuse 1: $1.66 1,960Expected 4/1/2027	Mfr. Part No. GTCN26-101M-R05 Mouser Part No 650-GTCN26-101M-R05	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 6MM 100V 2POLE NO LEADS GDT Learn More about Littelfuse gas discharge tubes	Datasheet	1,960Expected 4/1/2027	$1.66 $1.52 $1.26 $1.16 View $1.05 $0.966 $0.915	Min.: 1 Mult.: 1	GTCx2-R	5 kA	100 V	2 Electrode	SMD/SMT	Failsafe Not Protected	6 mm	4.2 mm	- 40 C	+ 90 C	Tray
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 8MM 75V 2POLE AXIAL LEADS GDT GTCA28-750M-R20 Littelfuse 1: $4.65 1,000Stock Available	Mfr. Part No. GTCA28-750M-R20 Mouser Part No 650-GTCA28-750M-R20	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 8MM 75V 2POLE AXIAL LEADS GDT Learn More about Littelfuse gas discharge tubes	Datasheet	1,000Stock Available More Info Available	$4.65 $3.86 $3.56 $2.96 View $2.73 $2.45 $2.34	Min.: 1 Mult.: 1	GTCx28-R	20 kA	75 V	2 Electrode	Axial	Failsafe Not Protected	8 mm	6 mm	- 40 C	+ 90 C	Tray
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 8MM 150V 2POLE AXIAL LEADS GDT GTCA28-151M-R10 Littelfuse 1,000: $1.93 Non-Stocked Lead-Time 12 Weeks	Mfr. Part No. GTCA28-151M-R10 Mouser Part No 650-GTCA28-151M-R10	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 8MM 150V 2POLE AXIAL LEADS GDT Learn More about Littelfuse gas discharge tubes	Datasheet	Non-Stocked Lead-Time 12 Weeks	$1.93	Min.: 1,000 Mult.: 1,000	GTCx28-R	10 kA	150 V	2 Electrode	Axial	Failsafe Not Protected	8 mm	6 mm	- 40 C	+ 90 C	Tray
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 350V 8mm 20KA 2POLE GTCA28-351M-R20 Littelfuse 1,000: $2.50 Non-Stocked Lead-Time 12 Weeks	Mfr. Part No. GTCA28-351M-R20 Mouser Part No 650-GTCA28-351M-R20	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 350V 8mm 20KA 2POLE Learn More about Littelfuse gas discharge tubes	Datasheet	Non-Stocked Lead-Time 12 Weeks	$2.50	Min.: 1,000 Mult.: 100	GTCx28-R	20 kA	350 V	2 Electrode	Axial	Failsafe Not Protected	8 mm	6 mm	- 40 C	+ 90 C	Tray
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 8MM 230V 3POLE AXIAL LEADS GDT GTCA38-231M-R10 Littelfuse 1: $4.18 Non-Stocked Lead-Time 12 Weeks	Mfr. Part No. GTCA38-231M-R10 Mouser Part No 650-GTCA38-231M-R10	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 8MM 230V 3POLE AXIAL LEADS GDT Learn More about Littelfuse gas discharge tubes	Datasheet	Non-Stocked Lead-Time 12 Weeks	$4.18 $3.47 $3.21 $2.67 View $2.45 $2.20 $2.08	Min.: 1 Mult.: 1	GTCx3-R	10 kA	230 V	3 Electrode	Axial	Failsafe Not Protected	8 mm	13.4 mm	- 40 C	+ 90 C	Tray
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors Gas Discharge Tubes 8mm 90V Axial Leaded GTCA38-900M-R20 Littelfuse 1,000: $4.57 Non-Stocked Lead-Time 12 Weeks	Mfr. Part No. GTCA38-900M-R20 Mouser Part No 650-GTCA38-900M-R20	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors Gas Discharge Tubes 8mm 90V Axial Leaded Learn More about Littelfuse gas discharge tubes	Datasheet	Non-Stocked Lead-Time 12 Weeks	$4.57	Min.: 1,000 Mult.: 1,000	GTCx3-R	20 kA	90 V	3 Electrode	Axial	Failsafe Not Protected	8 mm	13.4 mm	- 40 C	+ 90 C	Tray
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 3MM 230V 2POLE SMT GDT GTCS23-231M-R01-2 Littelfuse 2,000: $0.721 Non-Stocked Lead-Time 12 Weeks	Mfr. Part No. GTCS23-231M-R01-2 Mouser Part No 650-GTCS23-231M-R012	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 3MM 230V 2POLE SMT GDT Learn More about Littelfuse gas discharge tubes	Datasheet	Non-Stocked Lead-Time 12 Weeks	Reel $0.721	Min.: 2,000 Mult.: 2,000 : 2,000	GTCx2-R	1 kA	230 V	2 Electrode	SMD/SMT	Failsafe Not Protected	3 mm	4.5 mm	- 40 C	+ 90 C	Reel
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors Gas Discharge Tubes 5mm 470V Surface Mnt GTCS25-471M-R02-2 Littelfuse 1,500: $2.23 Non-Stocked Lead-Time 10 Weeks	Mfr. Part No. GTCS25-471M-R02-2 Mouser Part No 650-GTCS25-471M-R022	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors Gas Discharge Tubes 5mm 470V Surface Mnt Learn More about Littelfuse gas discharge tubes	Datasheet	Non-Stocked Lead-Time 10 Weeks	Reel $2.23	Min.: 1,500 Mult.: 1,500 : 1,500	GTCx2-R	2.5 kA	470 V	2 Electrode	SMD/SMT	Failsafe Not Protected	5 mm	4.4 mm	- 40 C	+ 90 C	Reel
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 8MM 75V 2POLE SMT GDT GTCS28-750M-R10-2 Littelfuse 4,000: $1.92 Non-Stocked Lead-Time 12 Weeks	Mfr. Part No. GTCS28-750M-R10-2 Mouser Part No 650-GTCS28-750MR10-2	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 8MM 75V 2POLE SMT GDT Learn More about Littelfuse gas discharge tubes	Datasheet	Non-Stocked Lead-Time 12 Weeks	Cut Tape $1.92	Min.: 4,000 Mult.: 500 : 500	GTCx2-R	10 kA	75 V	2 Electrode	SMD/SMT	Failsafe Not Protected	8.2 mm	6 mm	- 40 C	+ 90 C	Reel
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 5MM 250V 2POLE AXIAL LEADS GDT GTCA25-251M-R02 Littelfuse 1,000: $1.97 Non-Stocked Lead-Time 15 Weeks	Mfr. Part No. GTCA25-251M-R02 Mouser Part No 650-GTCA25-251M-R02	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 5MM 250V 2POLE AXIAL LEADS GDT Learn More about Littelfuse gas discharge tubes	Datasheet	Non-Stocked Lead-Time 15 Weeks	$1.97	Min.: 1,000 Mult.: 1,000	GTCx2-R	2.5 kA	250 V	2 Electrode	Axial	Failsafe Not Protected	5 mm	5 mm	- 40 C	+ 90 C	Tray
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GTCA25-301M-R02 Littelfuse 1,000: $1.97 Non-Stocked Lead-Time 15 Weeks	Mfr. Part No. GTCA25-301M-R02 Mouser Part No 650-GTCA25-301M-R02	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors Learn More about Littelfuse gas discharge tubes	Datasheet	Non-Stocked Lead-Time 15 Weeks	$1.97	Min.: 1,000 Mult.: 1,000	GTCx2-R	2.5 kA	300 V	2 Electrode	Axial	Failsafe Not Protected	5 mm	5 mm	- 40 C	+ 90 C	Tray
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GTCA25-601L-R05 GTCA25-601L-R05 Littelfuse 1,000: $2.39 Non-Stocked Lead-Time 15 Weeks	Mfr. Part No. GTCA25-601L-R05 Mouser Part No 650-GTCA25-601L-R05	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GTCA25-601L-R05 Learn More about Littelfuse gas discharge tubes	Datasheet	Non-Stocked Lead-Time 15 Weeks	$2.39	Min.: 1,000 Mult.: 1,000	GTCx2-R	5 kA	600 V	2 Electrode	Axial	Failsafe Not Protected	0.8 mm	5.2 mm	- 40 C	+ 90 C	Tray
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 5MM 90V 2POLE AXIAL LEADS GDT GTCA25-900M-R02 Littelfuse 1,000: $2.11 Non-Stocked Lead-Time 15 Weeks	Mfr. Part No. GTCA25-900M-R02 Mouser Part No 650-GTCA25-900M-R02	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 5MM 90V 2POLE AXIAL LEADS GDT Learn More about Littelfuse gas discharge tubes	Datasheet	Non-Stocked Lead-Time 15 Weeks	$2.11	Min.: 1,000 Mult.: 1,000	GTCx2-R	2.5 kA	90 V	2 Electrode	Axial	Failsafe Not Protected	5 mm	5 mm	- 40 C	+ 90 C	Tray
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors Gas Discharge Tubes 5mm 90V Axial Leaded GTCA25-900M-R05 Littelfuse 1,000: $1.97 Non-Stocked Lead-Time 15 Weeks	Mfr. Part No. GTCA25-900M-R05 Mouser Part No 650-GTCA25-900M-R05	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors Gas Discharge Tubes 5mm 90V Axial Leaded Learn More about Littelfuse gas discharge tubes	Datasheet	Non-Stocked Lead-Time 15 Weeks	$1.97	Min.: 1,000 Mult.: 1,000	GTCx2-R	5 kA	90 V	2 Electrode	Axial	Failsafe Not Protected	5 mm	5 mm	- 40 C	+ 90 C	Tray
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GTCA26-141M-R05 Littelfuse 1,000: $2.23 Non-Stocked Lead-Time 15 Weeks	Mfr. Part No. GTCA26-141M-R05 Mouser Part No 650-GTCA26-141M-R05	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors Learn More about Littelfuse gas discharge tubes	Datasheet	Non-Stocked Lead-Time 15 Weeks	$2.23	Min.: 1,000 Mult.: 1,000	GTCx2-R	5 kA	140 V	2 Electrode	Axial	Failsafe Not Protected	6 mm	4.2 mm	- 40 C	+ 90 C	Tray
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 6MM 150V 2POLE AXIAL LEADS GDT GTCA26-151M-R05-FS Littelfuse 5,000: $1.36 Non-Stocked Lead-Time 15 Weeks	Mfr. Part No. GTCA26-151M-R05-FS Mouser Part No 650-GTCA26-151MR05FS	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 6MM 150V 2POLE AXIAL LEADS GDT Learn More about Littelfuse gas discharge tubes	Datasheet	Non-Stocked Lead-Time 15 Weeks	$1.36	Min.: 5,000 Mult.: 1,000	GTCx2-R	5 kA	150 V	2 Electrode	Axial	Failsafe Protected	6 mm	4.2 mm	- 40 C	+ 90 C	Tray
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 200V 6mm 5KA 2POLE GTCA26-201M-R05 Littelfuse 1,000: $2.23 Non-Stocked Lead-Time 15 Weeks	Mfr. Part No. GTCA26-201M-R05 Mouser Part No 650-GTCA26-201M-R05	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 200V 6mm 5KA 2POLE Learn More about Littelfuse gas discharge tubes	Datasheet	Non-Stocked Lead-Time 15 Weeks	$2.23	Min.: 1,000 Mult.: 1,000	GTCx2-R	5 kA	200 V	2 Electrode	Axial	Failsafe Not Protected	6 mm	4.2 mm	- 40 C	+ 90 C	Tray
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 6MM 230V 2POLE AXIAL LEADS GDT GTCA26-231M-R05 Littelfuse 1: $4.46 Non-Stocked Lead-Time 15 Weeks	Mfr. Part No. GTCA26-231M-R05 Mouser Part No 650-GTCA26-231M-R05	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 6MM 230V 2POLE AXIAL LEADS GDT Learn More about Littelfuse gas discharge tubes	Datasheet	Non-Stocked Lead-Time 15 Weeks	$4.46 $3.71 $3.43 $2.84 View $2.35 $2.23	Min.: 1 Mult.: 1	GTCx2-R	5 kA	230 V	2 Electrode	Axial	Failsafe Not Protected	6 mm	4.2 mm	- 40 C	+ 90 C	Tray

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