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  • 突波吸收器 | Varistor

    DON'S DNR are ZINC OXIDE non-linear resistors whose resistance changes as a function of the applied voltage. the DNR provides a highly reliable and economic way to protext against repeated hihg voltage transient and surges such as those produced by induced lightning surges, switching surges and noise spike. The DNR utilizes a ceramic element composed of Zinc Oxide and several kinds of metal oxide additives that have been sintered at relatively highly temperature. ohmic electrodes are connected to each end of element by firing.
    FEATURES
    Broad products range
    varistor voltage :18 V to 1.8KV
    FAST response to the rapidly rising surge voltage
    High pertormance clamping voltage characteristics
    APPLICATIONS
    Transistor,Diode,IC,Thyristor and Triac semiconductor
    Surge protection in consumer electronics.
    Surge protection in industrial electronics.
    Surge protection in communication, measuring and controller electronics.
    Surge protection in electronic home appliances, gas and petroleum appliances.
    Electrostatic discharges and noise spike suppression.
    Relay and electromagnetic valve surge absorption.
    PART NUMBER CODE
    DNR
    □□
    D
    □□□
    K
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    1 = Symbol of DON'S VARISTORS
    2 = Element diameter
    3 = Series no.
    4 = voltage of varistor
    5 = Tolerance : k=+-10% , M=+-20%
    6 = packing : R= Reel packing B= Bulk packing
    7 = lead form : S = straight lead k=kinked lead
    CHARACTERISTICS
    DNR had the forward-reverse symmetrical electrical characteristics shown in the Fig1.The curve is plotted for a wider range of current than that normally given in date sheet to show three regions in the Fig2.
    FIG1
    FIG2