服務熱線
服務熱線
作者:點擊數:發布時(shi)間:2020-12-17
由于上述三類電阻器的隨機能而前進,所以在使用中應根據實際情況公平選用。這種電阻也叫無引線電阻,超低溫度,散熱性好,體積小是這種電阻的利益,可以替換傳統的插件電阻,在工作環境惡劣的情況下運用這種電阻,旺詮合金電阻可以起到良好的作用。旺詮合金電阻又可稱為柱狀電阻,無腳電阻,圓柱型電阻,或無引線電阻,首要用于外表貼裝加工過程。
旺詮合金電阻的精度(du)較高,但(dan)阻(zu)(zu)(zu)值溫度(du)系數(shu)和(he)(he)散布參數(shu)方(fang)針(zhen)(zhen)略低;線繞電(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)器(qi)(qi)(qi)的阻(zu)(zu)(zu)值精度(du)和(he)(he)溫度(du)系數(shu)方(fang)針(zhen)(zhen)很高,但(dan)散布參數(shu)方(fang)針(zhen)(zhen)偏低;電(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)器(qi)(qi)(qi)按材料分,有金屬膜電(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)器(qi)(qi)(qi)、線繞電(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)器(qi)(qi)(qi)和(he)(he)金屬箔不(bu)銹鋼電(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)器(qi)(qi)(qi)幾類。電(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)器(qi)(qi)(qi)要(yao)求電(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)的阻(zu)(zu)(zu)值誤差(cha)、電(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)的熱不(bu)亂性、電(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)器(qi)(qi)(qi)的散布參數(shu)等項方(fang)針(zhen)(zhen)均達到必(bi)定標準的電(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)器(qi)(qi)(qi)。
在(zai)直流或(huo)頻(pin)率很低(di)的交流電(dian)(dian)路中,一般只需選(xuan)用線繞電(dian)(dian)阻(zu)器(qi)或(huo)金(jin)屬(shu)膜(mo)電(dian)(dian)阻(zu)器(qi)即可,沒有必要選(xuan)用昂揚(yang)的金(jin)屬(shu)箔(bo)電(dian)(dian)阻(zu)器(qi)。金(jin)屬(shu)箔(bo)電(dian)(dian)阻(zu)器(qi)的精度、阻(zu)值(zhi)溫度系數和散布參數各(ge)項方(fang)針都很高(gao):精度可達(da)10-6,溫度系數可達(da)10-6/℃,散布電(dian)(dian)容(rong)可低(di)于0.5pF,散布電(dian)(dian)感可低(di)于0.1H。
信息(xi)來源:貼片(pian)電阻,旺(wang)詮合金(jin)電阻,旺(wang)詮電阻,合金(jin)電阻