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: HK$7.64
2,545In 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

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Datasheet

2,545In Stock

Cut Tape

HK$7.64

HK$6.29

HK$5.56

HK$5.33

HK$5.19

Reel

HK$5.14

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

SG350
Littelfuse
1: HK$11.75
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

Datasheet

1,995In Stock

Cut Tape

HK$11.75

HK$8.96

HK$7.43

HK$6.86

Reel

HK$5.52

View

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

SG230
Littelfuse
1: HK$11.75
2,735In Stock

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

Datasheet

2,735In Stock

Cut Tape

HK$11.75

HK$8.96

HK$7.43

HK$6.85

HK$6.31

Reel

HK$5.89

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: HK$11.75
6,135In Stock
8,000Expected 24/9/2026

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

Datasheet

6,135In Stock

8,000Expected 24/9/2026

Cut Tape

HK$11.75

HK$10.77

HK$8.10

HK$6.86

HK$6.44

Reel

HK$5.89

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

SG75
Littelfuse
1: HK$11.75
9,930In Stock

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

Datasheet

9,930In Stock

Cut Tape

HK$11.75

HK$8.96

HK$7.43

HK$6.85

HK$6.11

Reel

HK$5.89

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: HK$11.75
4,398In Stock
6,000Expected 28/10/2026

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

Datasheet

4,398In Stock

6,000Expected 28/10/2026

Cut Tape

HK$11.75

HK$8.96

HK$7.43

HK$6.85

HK$6.12

Reel

HK$5.89

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

SG400
Littelfuse
1: HK$11.75
16In Stock
4,000Expected 20/10/2026

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

Datasheet

16In Stock

4,000Expected 20/10/2026

Cut Tape

HK$11.75

HK$8.96

HK$7.43

HK$6.85

HK$6.12

Reel

HK$5.89

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 263-437V GDT T/R 2 Term

SG350Q
Littelfuse
1: HK$11.75
22,000On Order

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

Datasheet

22,000On Order

Cut Tape

HK$11.75

HK$8.96

HK$8.38

HK$7.07

HK$6.12

Reel

HK$5.89

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 105-195V 2A GDT T/R 2 Term

SG150
Littelfuse
1: HK$11.75
1,982Expected 17/11/2026

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

Datasheet

1,982Expected 17/11/2026

Cut Tape

HK$11.75

HK$8.96

HK$7.43

HK$6.85

HK$6.09

Reel

HK$5.89

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 210-390V GDT T/R 2 Term

SG300Q
Littelfuse
2,000: HK$5.89
Non-Stocked Lead-Time 14 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

Datasheet

Non-Stocked Lead-Time 14 Weeks

Reel

HK$5.89

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: HK$6.33
Non-Stocked Lead-Time 14 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

Datasheet

Non-Stocked Lead-Time 14 Weeks

Reel

HK$6.33

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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