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.

    2266 Products showing for Varistors

    Littelfuse
    73 → 91V
    50V
    68V
    145V
    50A
    15J
    Metal
    ZA
    14mm
    4500A
    3.38nF
    40mm
    -
    5.6mm
    14 (Dia.) x 5.6mm
    -
    EPCOS
    390V
    250V
    320V
    650V
    50A
    65J
    Metal
    Standard
    15.5mm
    4500A
    490pF
    -
    -
    4.8mm
    15.5 (Dia.) x 4.8mm
    -
    EPCOS
    39V
    25V
    31V
    77V
    10A
    7J
    Metal
    Standard
    15.5mm
    1000A
    5.85nF
    -
    -
    4.2mm
    15.5 (Dia.) x 4.2mm
    -
    EPCOS
    27V
    17V
    22V
    53V
    2.5A
    1.1J
    Metal
    StandarD
    9mm
    250A
    1.9nF
    -
    -
    3.6mm
    9 (Dia.) x 3.6mm
    -
    EPCOS
    470V
    300V
    385V
    775V
    25A
    -
    -
    AdvancedD
    -
    -
    200pF
    -
    -
    -
    -
    10 mm
    EPCOS
    1100V
    680V
    895V
    895V
    -
    1800J
    Metal
    B722
    60mm
    70000A
    2.6nF
    100mm
    -
    24mm
    -
    -
    EPCOS
    82V
    50V
    65V
    135V
    25A
    8.4J
    Metal
    Standard
    12mm
    2500A
    950pF
    -
    -
    3.9mm
    12 (Dia.) x 3.9mm
    -
    Littelfuse
    473V
    275V
    369V
    710V
    10A
    23J
    Metal
    LA
    9mm
    1200A
    80pF
    32mm
    -
    5.6mm
    9 (Dia.) x 5.6mm
    -
    Panasonic
    150V
    95V
    125V
    250V
    10A
    13J
    ZNR
    V
    8.5mm
    1750A
    500pF
    31.5mm
    -
    4.8mm
    8.5 (Dia.) x 4.8mm
    -
    Littelfuse
    11V
    4V
    5.5V
    22V
    2.5A
    0.4J
    Metal
    ZA
    9mm
    100A
    4.19nF
    32mm
    -
    5mm
    9 (Dia.) x 5mm
    -
    Littelfuse
    473V
    275V
    369V
    710V
    25A
    45J
    Metal
    LA
    12.5mm
    2500A
    200pF
    26mm
    -
    5.6mm
    12.5 (Dia.) x 5.6mm
    -
    Wurth Elektronik
    8V
    4V
    5.5V
    21V
    1A
    0.1J
    ZnO
    WE-VS
    -
    30A
    200pF
    1.6mm
    0.8mm
    -
    -
    0603 (1608M)
    EPCOS
    360V
    230V
    300V
    595V
    300A
    460J
    Metal
    HighE
    40mm
    40000A
    3.2nF
    60mm
    14mm
    14mm
    40 (Dia.) x 14mm
    -
    Panasonic
    270V
    175V
    225V
    455V
    100A
    190J
    ZNR
    E-S1
    16.5mm
    7500A
    1nF
    24mm
    -
    5.6mm
    16.5 (Dia.) x 5.6mm
    -
    Littelfuse
    52V
    30V
    38V
    93V
    10A
    8.8J
    Metal
    ZA
    17mm
    1000A
    6.27nF
    40mm
    -
    5mm
    17 (Dia.) x 5mm
    -
    EPCOS
    820V
    510V
    670V
    1355V
    100A
    190J
    Metal
    Standard
    -
    6500A
    460pF
    21.5mm
    26mm
    7.1mm
    21.5 x 7.1 x 26mm
    -
    Panasonic
    750V
    460V
    615V
    1240V
    100A
    420J
    ZNR
    E-S1
    17.5mm
    7500A
    530pF
    24.5mm
    -
    8.2mm
    17.5 (Dia.) x 8.2mm
    -
    Panasonic
    150V
    95V
    125V
    250V
    100A
    106J
    ZNR
    V
    21.5mm
    10000A
    4.5nF
    44.5mm
    -
    5.6mm
    21.5 (Dia.) x 5.6mm
    -
    EPCOS
    620V
    385V
    505V
    1025V
    10A
    28J
    Metal
    Standard
    -
    1200A
    85pF
    9mm
    11.5mm
    5.2mm
    9 x 5.2 x 11.5mm
    -
    Wurth Elektronik
    68V
    40V
    56V
    150V
    1A
    2.1J
    Metal
    WE-VD
    7.5mm
    100A
    500pF
    -
    -
    -
    -
    -
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