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.

    2095 Products showing for Varistors

    Panasonic
    270V
    175V
    225V
    455V
    10A
    24J
    ZNR
    V
    8.5mm
    1750A
    150pF
    31.5mm
    -
    4.8mm
    8.5 (Dia.) x 4.8mm
    -
    EPCOS
    430V
    275V
    350V
    710V
    50A
    110J
    Metal
    Advanced
    14mm
    6000A
    440pF
    15.5mm
    18.5mm
    5.4mm
    15.5 x 5.4 x 18.5mm
    -
    Littelfuse
    268V
    150V
    200V
    395V
    25A
    25J
    Metal
    LA
    12.5mm
    2500A
    360pF
    36mm
    -
    5.6mm
    12.5 (Dia.) x 5.6mm
    -
    EPCOS
    510V
    320V
    420V
    840V
    10A
    -
    -
    AdvancedD
    -
    -
    90pF
    -
    -
    -
    -
    7 mm
    EPCOS
    33V
    20V
    26V
    65V
    10A
    6J
    Metal
    Standard
    15.5mm
    1000A
    6.8nF
    -
    -
    4.6mm
    15.5 (Dia.) x 4.6mm
    -
    Panasonic
    39V
    25V
    31V
    77V
    10A
    11J
    ZNR
    V
    15.5mm
    2000A
    7nF
    38.5mm
    -
    4.9mm
    15.5 (Dia.) x 4.9mm
    -
    Panasonic
    470V
    300V
    385V
    775V
    100A
    350J
    ZNR
    V
    21.5mm
    10000A
    900pF
    44.5mm
    -
    6.6mm
    21.5 (Dia.) x 6.6mm
    -
    EPCOS
    470V
    300V
    385V
    775V
    100A
    173J
    Metal
    Standard
    21.5mm
    8000A
    780pF
    -
    -
    5.6mm
    21.5 (Dia.) x 5.6mm
    -
    Bourns
    27V
    17V
    20V
    44V
    1A
    -
    Metal
    AVHT
    -
    -
    370pF
    -
    -
    -
    -
    0805
    EPCOS
    430V
    275V
    350V
    710V
    50A
    -
    -
    StandardD
    -
    -
    440pF
    -
    -
    -
    -
    14 mm
    Littelfuse
    14.4 → 21.6V
    10V
    14V
    36V
    10A
    3.5J
    Metal
    ZA
    17mm
    1000A
    18.87nF
    36mm
    -
    5mm
    17 (Dia.) x 5mm
    -
    EPCOS
    910V
    550V
    745V
    1500V
    50A
    120J
    Metal
    Standard
    -
    4500A
    215pF
    15.5mm
    19mm
    7.2mm
    15.5 x 7.2 x 19mm
    -
    Bourns
    47V
    30V
    34V
    77V
    5A
    -
    Metal
    AVHT
    -
    -
    2.2nF
    -
    -
    -
    -
    1812 (4532M)
    Wurth Elektronik
    8V
    4V
    5.5V
    17V
    10A
    0.4J
    ZnO
    WE-VS
    -
    150A
    3.6nF
    3.2mm
    1.6mm
    -
    -
    1206 (3216M)
    Bourns
    47V
    30V
    34V
    77V
    10A
    -
    Metal
    AVHT
    -
    -
    6.5nF
    -
    -
    -
    -
    2220 (5650M)
    Littelfuse
    610 → 720V
    420V
    560V
    1060V
    100A
    160J
    Metal
    LA
    23mm
    6500A
    600pF
    40.5mm
    -
    7.3mm
    23 (Dia.) x 7.3mm
    -
    Panasonic
    56V
    35V
    45V
    110V
    2.5A
    2.2J
    ZNR
    VF
    -
    125A
    -
    8mm
    6mm
    3.2mm
    -
    -
    Panasonic
    360V
    230V
    300V
    595V
    25A
    65J
    ZNR
    V
    11.5mm
    3500A
    300pF
    34.5mm
    -
    5.7mm
    11.5 (Dia.) x 5.7mm
    -
    Bourns
    27V
    17V
    22V
    44V
    1A
    -
    Metal
    ZV
    -
    -
    740pF
    -
    -
    -
    -
    1206 (3216M)
    Bourns
    -
    -
    200V dc
    395V
    3500A
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
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