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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Part #

Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 315-525V 2A GDT T/R 2 Term

SG420
Littelfuse
1: $1.47
2,595In 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

Datasheet

2,595In Stock

Cut Tape

$1.47

$1.16

$0.984

$0.937

Reel

$0.886

Quote

MouseReel Available

Min.: 1
Mult.: 1

: 2,000

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 172-288V 2A GDT T/R 2 Term

SG230
Littelfuse
1: $2.46
2,777In Stock

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

Datasheet

2,777In Stock

Cut Tape

$2.46

$1.89

$1.42

$1.25

$1.16

Reel

$1.03

MouseReel Available

Min.: 1
Mult.: 1

: 2,000

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: $2.06
6,135In Stock
8,000Expected 2026-09-01

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

Datasheet

6,135In Stock

8,000Expected 2026-09-01

Cut Tape

$2.06

$1.89

$1.42

$1.20

$1.13

Reel

$1.03

MouseReel Available

Min.: 1
Mult.: 1

: 2,000

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 263-437V 2A GDT T/R 2 Term

SG350
Littelfuse
1: $2.06
2,000In 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

Datasheet

2,000In Stock

Cut Tape

$2.06

$1.57

$1.30

$1.22

$1.13

Reel

$1.03

MouseReel Available

Min.: 1
Mult.: 1

: 2,000

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: $2.06
6,000In Stock
8,000Expected 2026-09-14

Mfr. Part #
SG350Q

Mouser Part #
576-SG350Q

Littelfuse

Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 263-437V GDT T/R 2 Term

Learn More

Datasheet

6,000In Stock

8,000Expected 2026-09-14

Cut Tape

$2.06

$1.57

$1.42

$1.20

$1.04

Reel

$1.03

MouseReel Available

Min.: 1
Mult.: 1

: 2,000

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 52-98V 2A GDT T/R 2 Term

SG75
Littelfuse
1: $2.06
10,310In Stock

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

Datasheet

10,310In Stock

Cut Tape

$2.06

$1.57

$1.30

$1.20

$1.04

Reel

$1.03

MouseReel Available

Min.: 1
Mult.: 1

: 2,000

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 63-117V 2A GDT T/R 2 Term

SG90
Littelfuse
1: $2.06
4,610In 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

Datasheet

4,610In Stock

Cut Tape

$2.06

$1.57

$1.30

$1.20

$1.07

Reel

$1.03

MouseReel Available

Min.: 1
Mult.: 1

: 2,000

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: $2.06
1,779In Stock

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

Datasheet

1,779In Stock

Cut Tape

$2.06

$1.57

$1.30

$1.20

$1.04

Reel

$1.03

MouseReel Available

Min.: 1
Mult.: 1

: 2,000

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 300-500V 2A GDT T/R 2 Term

SG400
Littelfuse
1: $2.06
16In 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

Datasheet

16In Stock

Cut Tape

$2.06

$1.57

$1.42

$1.25

$1.15

Reel

$1.03

MouseReel Available

Min.: 1
Mult.: 1

: 2,000

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 210-390V GDT T/R 2 Term

SG300Q
Littelfuse
2,000: $1.03
Non-Stocked Lead-Time 14 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

Datasheet

Non-Stocked Lead-Time 14 Weeks

Reel

$1.03

Min.: 2,000
Mult.: 2,000

: 2,000

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 14 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

Datasheet

Non-Stocked Lead-Time 14 Weeks

Reel

$1.11

Min.: 2,000
Mult.: 2,000

: 2,000

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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