Varistors | Metal Oxide Varistors | MOV | RS
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    Varistors

    Varistors are devices that provide excellent transient voltage suppression and are a type of non-linear device that feature similar characteristics to Zener diodes. They are used to protect vulnerable electronic circuits and components from overvoltage conditions that can cause damage. Any potentially destructive overvoltage energy is dissipated as heat.

    Types of Varistor

    Metal oxide varistors

    Metal Oxide Varistors (MOVs) are typically constructed from zinc oxide and combined with small additions of other metal oxides such as cobalt, manganese or bismuth. These materials are sintered into ceramic casings during manufacture. Although MOVs are available in different formats, they are most commonly radial leaded discs.

    Applications:

    • Suppression of lightning and other high levels of transient energy
    • Low voltage power supplies in DC circuits
    • Low voltage power supply in automotive applications
    • Protection from internal transients within capacitor discharges, relay switching and inductive load switching

    Ceramic transient voltage

    Ceramic transient voltage suppressors are a type of variable resistor that are designed to respond to momentary conditions of overvoltage. They are more effective than other types of overvoltage protection components, such as varistors or gas discharge tubes, as they respond faster to the changing conditions. This particular type of transient voltage suppressor is made from ceramic.

    Applications:

    Ceramic transient voltage suppressors are used as part of electronic circuits to protect data or transmission lines. They work to protect against both unidirectional and bidirectional electrostatic discharge. This kind of sudden voltage spike can be caused either internally or externally, for example in the form of lightning or motor arcing.

    2271 Products showing for Varistors

    Littelfuse
    52V
    30V
    38V
    93V
    2.5A
    1.8J
    Metal
    ZA
    9mm
    250A
    1.245nF
    32mm
    -
    5mm
    9 (Dia.) x 5mm
    -
    Panasonic
    620V
    385V
    505V
    1025V
    50A
    190J
    ZNR
    V
    14mm
    5000A
    300pF
    38mm
    -
    7.5mm
    14 x 7.5mm
    -
    Panasonic
    150V
    95V
    125V
    250V
    50A
    53J
    ZNR
    V
    15.5mm
    6000A
    2.2nF
    38.5mm
    -
    5.2mm
    15.5 (Dia.) x 5.2mm
    -
    EPCOS
    18V
    11V
    14V
    36V
    5A
    1.7J
    Metal
    Standard
    12mm
    500A
    6.25nF
    -
    -
    4mm
    12 (Dia.) x 4mm
    -
    EPCOS
    240V
    150V
    200V
    395V
    10A
    11J
    Metal
    Standard
    9mm
    1200A
    210pF
    -
    -
    3.8mm
    9 (Dia.) x 3.8mm
    -
    EPCOS
    270V
    175V
    225V
    455V
    100A
    -
    -
    AdvancedD
    -
    -
    1.35nF
    -
    -
    -
    -
    20 mm
    EPCOS
    270V
    175V
    225V
    455V
    5A
    -
    Metal
    CU
    -
    400A
    75pF
    8mm
    6.3mm
    3.2mm
    8 x 6.3 x 3.2mm
    1210 (3225M)
    EPCOS
    470V
    300V
    385V
    775V
    5A
    -
    Metal
    CU
    -
    400A
    45pF
    8mm
    6.3mm
    4.5mm
    8 x 6.3 x 4.5mm
    1210 (3225M)
    EPCOS
    6.4 → 9.6V
    4V
    5.5V
    17V
    5A
    0.8J
    Ceramic
    CT/B
    -
    500A
    10nF
    4.5mm
    3.2mm
    -
    4.5 x 3.2 x 2.5mm
    1812 (4532M)
    EPCOS
    390V
    250V
    320V
    650V
    50A
    65J
    Metal
    Standard
    15.5mm
    4500A
    490pF
    -
    -
    4.8mm
    15.5 (Dia.) x 4.8mm
    -
    EPCOS
    390V
    250V
    320V
    650V
    5A
    -
    Metal
    CU
    -
    400A
    55pF
    8mm
    6.3mm
    4.5mm
    8 x 6.3 x 4.5mm
    1210 (3225M)
    EPCOS
    510V
    320V
    420V
    840V
    100A
    184J
    Metal
    Standard
    21.5mm
    8000A
    540pF
    -
    -
    5.8mm
    21.5 (Dia.) x 5.8mm
    -
    Littelfuse
    162 → 198V
    115V
    153V
    300V
    50A
    35J
    Metal
    ZA
    17mm
    4500A
    1.19nF
    36mm
    -
    5mm
    17 (Dia.) x 5mm
    -
    EPCOS
    360V
    230V
    300V
    300V
    -
    730J
    Metal
    B722
    60mm
    70000A
    7.9nF
    100mm
    -
    24mm
    -
    -
    Bourns
    320V
    320V
    415V
    875V
    100A
    -
    -
    IsoMOV
    -
    -
    40pF
    -
    -
    -
    -
    Bulk
    EPCOS
    620V
    385V
    505V
    1025V
    100A
    273J
    Metal
    Advanced
    20mm
    10000A
    600pF
    21.5mm
    26mm
    7.6mm
    21.5 x 7.6 x 26mm
    -
    EPCOS
    390V
    250V
    320V
    650V
    100A
    140J
    Metal
    Standard
    21.5mm
    8000A
    940pF
    -
    -
    5.3mm
    21.5 (Dia.) x 5.3mm
    -
    Panasonic
    150V
    95V
    125V
    250V
    50A
    53J
    ZNR
    V
    15.5mm
    6000A
    2.2nF
    38.5mm
    -
    5.2mm
    15.5 (Dia.) x 5.2mm
    -
    Vishay
    430V
    275V
    350V
    710V
    10A
    36J
    -
    VDRS - E
    9mm
    1200A
    140pF
    -
    -
    4.9mm
    9 (Dia.) x 4.9mm
    -
    EPCOS
    100V
    60V
    85V
    165V
    100A
    33J
    Metal
    Standard
    21.5mm
    6500A
    3.6nF
    -
    -
    4.4mm
    21.5 (Dia.) x 4.4mm
    -
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