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

    EPCOS
    1100V
    680V
    895V
    1815V
    50A
    140J
    Metal
    Standard
    15.5mm
    4500A
    180pF
    -
    -
    8mm
    15.5 (Dia.) x 8mm
    -
    EPCOS
    470V
    300V
    385V
    775V
    25A
    47J
    Metal
    Standard
    12mm
    2500A
    200pF
    -
    -
    5.1mm
    12 (Dia.) x 5.1mm
    -
    Bourns
    430V
    275V
    350V
    710V
    50A
    115J
    Metal
    MOV-14D
    16.5mm
    4500A
    460pF
    40mm
    -
    5.2mm
    16.5 (Dia.) x 5.2mm
    -
    EPCOS
    1000V
    625V
    825V
    1650V
    25A
    68J
    Metal
    Standard
    -
    2500A
    110pF
    12mm
    15mm
    7.5mm
    12 x 7.5 x 15mm
    -
    Littelfuse
    1000V
    575V
    730V
    1500V
    50A
    120J
    Metal
    LA
    17mm
    4500A
    220pF
    40mm
    -
    8.3mm
    17 (Dia.) x 8.3mm
    -
    EPCOS
    430V
    275V
    350V
    710V
    25A
    43J
    Metal
    Standard
    -
    2500A
    220pF
    12mm
    14.5mm
    5mm
    12 x 5 x 14.5mm
    -
    Panasonic
    18V
    11V
    14V
    36V
    10A
    5.2J
    ZNR
    V
    15.5mm
    2000A
    25nF
    34.5mm
    -
    4.6mm
    15.5 (Dia.) x 4.6mm
    -
    Littelfuse
    825V
    480V
    640V
    1240V
    50A
    105J
    Metal
    LA
    17mm
    4500A
    270pF
    40mm
    -
    7.3mm
    17 (Dia.) x 7.3mm
    -
    EPCOS
    205V
    130V
    170V
    340V
    25A
    19J
    Metal
    Standard
    12mm
    2500A
    500pF
    -
    -
    4.2mm
    12 (Dia.) x 4.2mm
    -
    EPCOS
    390V
    250V
    320V
    650V
    100A
    140J
    Metal
    Standard
    21.5mm
    8000A
    940pF
    -
    -
    5.3mm
    21.5 (Dia.) x 5.3mm
    -
    Littelfuse
    387 → 495V
    275V
    369V
    710V
    5A
    11J
    Metal
    ZA
    7mm
    400A
    75pF
    29mm
    -
    5.6mm
    7 (Dia.) x 5.6mm
    -
    EPCOS
    270V
    175V
    225V
    455V
    100A
    98J
    Metal
    Standard
    21.5mm
    8000A
    1nF
    -
    -
    5mm
    21.5 (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
    -
    EPCOS
    750V
    460V
    615V
    1240V
    100A
    195J
    Metal
    Standard
    21.5mm
    8000A
    380pF
    -
    -
    6.8mm
    21.5 (Dia.) x 6.8mm
    -
    BC Components
    390V
    250V
    320V
    650V
    25A
    58J
    ZnO Ceramic
    VDR
    13.5mm
    2500A
    300pF
    31.5mm
    5.4mm
    8mm
    13.5 (Dia.) x 8mm
    -
    EPCOS
    240V
    150V
    200V
    395V
    10A
    11J
    Metal
    Standard
    9mm
    1200A
    210pF
    -
    -
    3.8mm
    9 (Dia.) x 3.8mm
    -
    Bourns
    320V
    320V
    415V
    875V
    100A
    -
    -
    IsoMOV
    -
    -
    40pF
    -
    -
    -
    -
    Bulk
    Littelfuse
    277V
    320V
    -
    -
    -
    -
    Metal
    LSP10
    -
    10000A
    -
    64mm
    48mm
    30mm
    64 x 48 x 30mm
    -
    Panasonic
    430V
    275V
    350V
    710V
    100A
    303J
    ZNR
    V
    21.5mm
    10000A
    1nF
    44.5mm
    -
    6.4mm
    21.5 (Dia.) x 6.4mm
    -
    Bourns
    250V
    250V
    320V
    675V
    50A
    -
    -
    IsoMOV
    -
    -
    30pF
    -
    -
    -
    -
    Bulk
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