Gas Discharge Tubes | GDT Surge Protection | RS
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    Gas Discharge Tubes

    Gas discharge tubes (GDT) are sealed glass tubes containing a pair of electrodes and filled with a gas that only conducts when a high voltage is applied across the electrodes. When a voltage spike appears across the device the gas is ionised (becomes a conducting gas plasma) which short-circuits the spike energy away. Gas discharge tubes are often used to protect sensitive circuit inputs from potentially damaging interference voltage transients. The large amount of energy that can be dispersed by gas discharge tubes makes them a good choice for lightning surge protection, particularly for telecommunications equipment.

    Why use a gas discharge tube?

    Most commonly used as a surge protection aid, gas discharge tubes are key in limiting surges in voltage across both electronic and electrical circuits. GDTs are great at handling high current feeds whilst also maintaining low capacitance and having excellent insulation resistance.

    247 Products showing for Gas Discharge Tubes

    Bourns
    2036
    Surge Absorber
    20kA
    75V
    525V
    -
    Surface Mount
    -
    -
    -
    -
    -
    -
    -
    Bourns
    2045
    2 Electrode Gas Discharge Tube
    15kA
    400V
    1000V
    -
    Axial
    8 (Dia.) x 6mm
    -
    -
    -
    6mm
    +85°C
    -30°C
    EPCOS
    EHV
    2 Electrode Arrester
    20kA
    90V
    450 V, 550V
    90 V dc
    Through Hole
    -
    -
    -
    -
    6.05mm
    +90°C
    -40°C
    EPCOS
    A71-H08X
    2 Electrode Arrester
    15kA
    800V
    1000V
    -
    -
    -
    -
    -
    -
    -
    -
    -
    EPCOS
    EHV
    2 Electrode Arrester
    12kA
    350V
    650 V, 800V
    350 V dc
    Through Hole
    -
    -
    -
    -
    6.05mm
    +90°C
    -40°C
    EPCOS
    EHV
    2 Electrode Arrester
    10kA
    75V
    700V
    -
    Axial
    8 (Dia.) x 6.05mm
    -
    -
    -
    6.05mm
    +90°C
    -40°C
    EPCOS
    EHV
    2 Electrode Arrester
    10kA
    150V
    500 V, 600V
    150 V dc
    Through Hole
    -
    -
    -
    -
    6.05mm
    +90°C
    -40°C
    EPCOS
    EHV
    3 Electrode Arrester
    25kA
    230V
    350 V, 450V
    230 V dc
    Through Hole
    -
    -
    -
    10.5mm
    13.4mm
    +90°C
    -40°C
    EPCOS
    EHV
    2 Electrode Arrester
    20kA
    230V
    450 V, 550V
    230 V dc
    Through Hole
    -
    -
    -
    -
    6.05mm
    +90°C
    -40°C
    EPCOS
    EHV
    2 Electrode Arrester
    5kA
    300V
    450 V, 550V
    300 V dc
    Through Hole
    -
    -
    -
    6.7mm
    4.7mm
    +90°C
    -40°C
    EPCOS
    EHV
    2 Electrode Arrester
    12kA
    600V
    1100 V, 950V
    600 V dc
    Through Hole
    -
    -
    -
    -
    6.05mm
    +90°C
    -40°C
    Bourns
    2087
    2 Electrode Gas Discharge Tube
    3kA
    800V
    1400V
    -
    Surface Mount
    4 x 4 x 4mm
    -
    4mm
    4mm
    4mm
    +85°C
    -30°C
    Bourns
    GDT35
    3 Electrode Gas Discharge Tube
    20kA
    420V
    900V
    -
    Surface Mount
    -
    -
    -
    -
    -
    -
    -
    Bourns
    2029
    2 Electrode Gas Discharge Tube
    10A
    90V
    600V
    -
    Surface Mount
    7.9 x 6 x 7.5mm
    -
    6mm
    7.5mm
    7.9mm
    +105°C
    -55°C
    Littelfuse
    SL1011A
    2 Electrode Arrester
    1kA
    420V
    800 V, 900V
    -
    Axial
    8 (Dia.) x 6.05mm
    -
    -
    -
    6.05mm
    +90°C
    -40°C
    Bourns
    2089
    2 Electrode Gas Discharge Tube
    3kA
    1200V
    2000V
    -
    Axial
    5.5 (Dia.) x 6mm
    -
    -
    -
    6mm
    +85°C
    -30°C
    EPCOS
    EHV
    2 Electrode Arrester
    10kA
    350V
    750 V, 800V
    350 V dc
    Through Hole
    -
    -
    -
    -
    5mm
    +90°C
    -40°C
    Bourns
    2038
    Surge Absorber
    10kA
    150V
    500V
    -
    Surface Mount
    -
    -
    -
    -
    -
    -
    -
    TDK
    EC350X
    2 Electrode Arrester
    -
    402V
    900V
    60 V
    Through Hole
    8 Dia. x 6.05mm
    -
    8mm
    8.1mm
    6.05mm
    +90°C
    -40°C
    Bourns
    2053
    2 Electrode Gas Discharge Tube
    5kA
    75V
    800V
    -
    Surface Mount
    4.2 x 4.2 x 4mm
    -
    4.2mm
    4mm
    4.2mm
    +85°C
    -30°C
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