Gas Discharge Tube

Gas Discharge Tube (GDT) is made up of a spark gap enveloped in a sealed ceramic or glass tube that is filled with inert gas.

Under the normal condition, the operation voltage does not reach the spark-over voltage and GDT keeps its high resistance status.

However, when the over-voltage reaches GDT's spark-over voltage, high energy brought by over-voltage will cause the fill-in gas start to discharge and the internal insulation gap start to breakdown.

At this moment, GDT becomes short circuit very fast, which will lead the surge current into the ground and protect the equipment safely.

As soon as the over-voltage disappears, the GDT returns to high insulation status and waiting for the next action.

Gas discharge tube GF32R Serie


Size: 4.5 x 3.2 x2.7mm

DC spark-over voltage:

75...600V

Max. impulse discharge current:

2kA (10 times)


Gas discharge tube GD82R Serie


Size: 8 x T 6mm

DC spark-over voltage:

70...800V

Max. impulse discharge current (1 time):

70...470V / 15kA

600...800V / 10kA


Gas discharge tube GC82R Serie (High Voltage)


Size: 8 x T 6 / T 8mm

DC spark-over voltage:

600...6000V

Max. impulse discharge current (1 time):

600...2500V / 8kA

2700...6000V / 5kA


Gas discharge tube GF62R Serie


Size: 6.2 x T 4.2mm

DC spark-over voltage:

75...3000V

Max. impulse discharge current (1 time):

75...800V / 5kA 800...2000V / 3kA


Gas discharge tube GS22R Serie


Size: 3.2 x1.6 x 1.6mm

DC spark-over voltage:

150...600V

Max. impulse discharge current:

0.5kA (10 times)


Gas discharge tube GF42R Serie


Size: 4.2/3.5 x T 4mm

DC spark-over voltage:

75...2000V

Max. impulse discharge current (1 time):

75...600V / 5kA 800...2000V / 3kA


Gas discharge tube GD52R Serie


Size: 5.5 x T 6mm

DC spark-over voltage:

70...3600V

Max. impulse discharge current (1 time):

70...470V / 10kA

600...800V / 5kA

1000...3600V / 3kA


Gas discharge tube GD82R-U Serie (High Surge)


Size: 8 x T 6mm

DC spark-over voltage:

70...600V

Max. impulse discharge current (1 time):

25kA


Gas discharge G12D8A tube


Size: 11.8 x T 8mm

DC spark-over voltage:

230...800V

Max. impulse discharge current (1 time):

20kA (10 times)

40kA


Gas discharge tube GC63R Serie


Size: 6 x T 8mm

DC spark-over voltage:

90...600V

Max. impulse discharge current (1 time):

350...600V / 5kA (10 times)

90...145V / 5kA

200...250V / 10kA


Gas discharge tube GQF3R Serie


Size: 5 x T 7.2mm

DC spark-over voltage:

75...800V

Max. impulse discharge current (1 time):

75...150V / 10kA

200...470V / 15kA

600...800V / 10kA


Gas discharge tube G12D12 Series


Size: 11.8 x T 12mm

DC spark-over voltage:

230...800V

Max. impulse discharge current (1 time):

30kA (10 times)

40kA


Gas discharge tube G12D17 Series


Size: 11.8 x T 17mm

DC spark-over voltage:

230...800V

Max. impulse discharge current (1 time):

40kA (10 times)

80kA


Gas discharge tube G12D18 Series


Size: 11.8 x T 18mm

DC spark-over voltage:

230...800V

Max. impulse discharge current (1 time):

40kA (10 times)

80kA


Gas discharge tube G16D5A Series


Size: 15.5 x T 5mm

DC spark-over voltage:

500...800V

Max. impulse discharge current (1 time):

20kA (10 times)

40kA


Gas discharge tube G20D5F Series


Size: 20 x T 5.5mm

DC spark-over voltage:

150...1000V

Max. impulse discharge current (1 time):

40kA (10 times)

60kA


Gas discharge tube G25D10 Series


Size: 25 x T 10mm

DC spark-over voltage:

500...800V

Max. impulse discharge current (1 time):

60kA (10 times)

80kA


Gas discharge tube G25D10-H Series


Size: 25 x T 5.5mm

DC spark-over voltage:

150...1000V

Max. impulse discharge current (1 time):

40kA (10 times)

60kA


Gas discharge tube G25D21 Series


Size: 25 x T 21mm

DC spark-over voltage:

500...800V

Max. impulse discharge current (1 time):

80kA (10 times)

160kA


Gas discharge tube G30D12 Series


Size: 30 x T 12mm

DC spark-over voltage:

500...800V

Max. impulse discharge current (1 time):

100kA (10 times)

160kA


Gas discharge tube GB83R Serie


Size: 8 x T 10mm

DC spark-over voltage:

75...600V

Max. impulse discharge current:

20kA (10 times)



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