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.

    2064 Products showing for Varistors

    EPCOS
    39V
    25V
    31V
    77V
    20A
    22J
    Metal
    Standard
    21.5mm
    2000A
    11.1nF
    -
    -
    4.7mm
    21.5 (Dia.) x 4.7mm
    -
    Bourns
    360V
    230V
    230V
    595V
    5A
    10J
    Metal
    DV
    -
    400A
    110pF
    8mm
    -
    2mm
    -
    3225
    Bourns
    47V
    30V
    38V
    77V
    5A
    -
    Metal
    ZVHT
    -
    -
    1.8nF
    -
    -
    -
    -
    1812 (4532M)
    EPCOS
    910V
    550V
    745V
    1500V
    800A
    3100J
    Metal
    HighE
    80mm
    100000A
    6.5nF
    135mm
    118mm
    27.7mm
    135 x 118 x 27.7mm
    SIOV
    EPCOS
    430V
    275V
    350V
    710V
    10A
    -
    Metal
    CU
    -
    1200A
    95pF
    10.2mm
    8mm
    4.5mm
    10.2 x 8 x 4.5mm
    4032 (10280M)
    EPCOS
    1800V
    1100V
    1465V
    2970V
    100A
    -
    -
    StandardD
    -
    -
    210pF
    -
    -
    -
    -
    20 mm
    HK$0.413
    Each (On a Reel of 10000)
    EPCOS
    -
    -
    5.6V
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    HK$2.608
    Each (On a Reel of 1500)
    EPCOS
    -
    110 Vac, 230 Vac
    -
    -
    1.8A
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    Bourns
    39V
    25V
    31V
    65V
    10A
    -
    Metal
    ZV
    -
    -
    5nF
    -
    -
    -
    -
    2220 (5650M)
    Panasonic
    510V
    320V
    410V
    845V
    50A
    190J
    ZNR
    V
    13mm
    6000A
    310pF
    37mm
    -
    6.8mm
    13 x 6.8mm
    -
    EPCOS
    47V
    30V
    38V
    30V
    10A
    9J
    Metal
    Standard
    15.5mm
    1000A
    4.95nF
    -
    -
    4.4mm
    15.5 (Dia.) x 4.4mm
    -
    Bourns
    250V
    -
    5V
    25V
    -
    -
    Metal
    MLC
    -
    -
    0.5pF
    1.6mm
    0.8mm
    -
    1.6 x 0.8mm
    0402 (1005M)
    EPCOS
    73.8 → 90.2V
    50V
    65V
    135V
    10A
    5.6J
    Ceramic
    CT/B
    -
    800A
    1nF
    5.7mm
    5mm
    -
    5.7 x 5 x 2.5mm
    2220 (5650M)
    Panasonic
    47V
    30V
    38V
    93V
    10A
    14J
    ZNR
    V
    15.5mm
    2000A
    6.75nF
    38.5mm
    -
    5mm
    15.5 (Dia.) x 5mm
    -
    EPCOS
    120V
    75V
    100V
    200V
    100A
    40J
    Metal
    Standard
    21.5mm
    6500A
    2.9nF
    -
    -
    4.6mm
    21.5 (Dia.) x 4.6mm
    -
    Bourns
    205V
    130V
    170V
    340V
    5A
    7J
    Plastic
    PV
    -
    400A
    160pF
    8mm
    -
    3.4mm
    -
    3225
    EPCOS
    -
    35Vrms
    45V
    90V
    50A
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    Bourns
    230V
    230V
    300V
    620V
    100A
    -
    -
    IsoMOV
    -
    -
    40pF
    -
    -
    -
    -
    Bulk
    Bourns
    39V
    25V
    31V
    65V
    1A
    -
    Metal
    ZVHT
    -
    -
    510pF
    -
    -
    -
    -
    1206 (3216M)
    Bourns
    205V
    130V
    130V
    340V
    5A
    7J
    Metal
    DV
    -
    400A
    150pF
    10mm
    -
    2mm
    -
    3225
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