壓敏電阻是一種具有非線性伏安特性的電阻器件，主要用于在電路承受過壓時進行電壓鉗位，吸收多余的電流以保護敏感器件。壓敏電阻器的電阻體材料是半導體，所以它是半導體電阻器的一個品種。

壓(ya)(ya)(ya)敏電(dian)(dian)(dian)阻(zu)器(qi)主(zhu)要(yao)應用(yong)于各種(zhong)電(dian)(dian)(dian)子產(chan)品的過(guo)(guo)電(dian)(dian)(dian)壓(ya)(ya)(ya)保護(hu)電(dian)(dian)(dian)路中， 它(ta)有多種(zhong)型號和(he)規(gui)格。 所選壓(ya)(ya)(ya)敏電(dian)(dian)(dian)阻(zu)器(qi)的主(zhu)要(yao)參數（包括標(biao)稱(cheng)(cheng)電(dian)(dian)(dian)壓(ya)(ya)(ya)、最大(da)連(lian)續工作電(dian)(dian)(dian)壓(ya)(ya)(ya)、最大(da)限制(zhi)電(dian)(dian)(dian)壓(ya)(ya)(ya)、通(tong)流容量等）必須符合應用(yong)電(dian)(dian)(dian)路的要(yao)求，尤其是標(biao)稱(cheng)(cheng)電(dian)(dian)(dian)壓(ya)(ya)(ya)要(yao)準確。標(biao)稱(cheng)(cheng)電(dian)(dian)(dian)壓(ya)(ya)(ya)過(guo)(guo)高，壓(ya)(ya)(ya)敏電(dian)(dian)(dian)阻(zu)器(qi)起不到(dao)過(guo)(guo)電(dian)(dian)(dian)壓(ya)(ya)(ya)保護(hu)作用(yong)，標(biao)稱(cheng)(cheng)電(dian)(dian)(dian)壓(ya)(ya)(ya)過(guo)(guo)低，壓(ya)(ya)(ya)敏電(dian)(dian)(dian)阻(zu)器(qi)容易誤動作或被擊穿。

文章源自：貼片電阻、壓敏電阻器、旺詮合金電阻、旺詮合(he)金電阻代理商