熱敏(min)電(dian)(dian)(dian)阻(zu)(zu)(zu)電(dian)(dian)(dian)阻(zu)(zu)(zu)按電(dian)(dian)(dian)阻(zu)(zu)(zu)值(zhi)溫(wen)度系數分成正電(dian)(dian)(dian)阻(zu)(zu)(zu)溫(wen)度系數〈PTC〉和負電(dian)(dian)(dian)阻(zu)(zu)(zu)溫(wen)度系數〈NTC〉熱敏(min)電(dian)(dian)(dian)阻(zu)(zu)(zu)電(dian)(dian)(dian)阻(zu)(zu)(zu)PTC熱敏(min)電(dian)(dian)(dian)阻(zu)(zu)(zu)電(dian)(dian)(dian)阻(zu)(zu)(zu)的(de)(de)宏觀經(jing)濟特(te)(te)(te)性(xing)(xing)(xing)(xing)關(guan)(guan)鍵(jian)表(biao)現在(zai)它的(de)(de)電(dian)(dian)(dian)阻(zu)(zu)(zu)—溫(wen)度特(te)(te)(te)性(xing)(xing)(xing)(xing)伏安特(te)(te)(te)性(xing)(xing)(xing)(xing)曲線特(te)(te)(te)性(xing)(xing)(xing)(xing)和電(dian)(dian)(dian)流量(liang)—時間特(te)(te)(te)性(xing)(xing)(xing)(xing)三個關(guan)(guan)鍵(jian)層面。在(zai)其(qi)中電(dian)(dian)(dian)阻(zu)(zu)(zu)溫(wen)度特(te)(te)(te)性(xing)(xing)(xing)(xing)更為(wei)基本上(shang)的(de)(de)特(te)(te)(te)性(xing)(xing)(xing)(xing)。也(ye)是考量(liang)PTC原材料特(te)(te)(te)性(xing)(xing)(xing)(xing)優劣的(de)(de)關(guan)(guan)鍵(jian)特(te)(te)(te)性(xing)(xing)(xing)(xing)。因而，大部分運用商品的(de)(de)制定(ding)都是以電(dian)(dian)(dian)阻(zu)(zu)(zu)—溫(wen)度特(te)(te)(te)性(xing)(xing)(xing)(xing)考慮(lv)的(de)(de)。

     BaTio3半導體材(cai)料(liao)瓷器的(de)這(zhe)類(lei)PTC效(xiao)用(yong)(yong)是一種位錯效(xiao)用(yong)(yong)即(ji)僅(jin)(jin)有多種BaTio3結(jie)構陶瓷，才具備著這(zhe)類(lei)特性，并(bing)且(qie)僅(jin)(jin)有施主夾雜(za)的(de)情形下，原(yuan)材(cai)料(liao)才展現PTC效(xiao)用(yong)(yong)。熱(re)(re)敏電(dian)(dian)(dian)阻(zu)(zu)電(dian)(dian)(dian)阻(zu)(zu)按電(dian)(dian)(dian)阻(zu)(zu)值(zhi)溫(wen)(wen)度系(xi)(xi)數分成正(zheng)電(dian)(dian)(dian)阻(zu)(zu)溫(wen)(wen)度系(xi)(xi)數分成正(zheng)電(dian)(dian)(dian)阻(zu)(zu)溫(wen)(wen)度系(xi)(xi)數〈PTC〉各負電(dian)(dian)(dian)阻(zu)(zu)溫(wen)(wen)度系(xi)(xi)數〈NTC〉熱(re)(re)敏電(dian)(dian)(dian)阻(zu)(zu)電(dian)(dian)(dian)阻(zu)(zu)。

     PTC是positire temperatare cefficient的簡(jian)稱實則正(zheng)的溫(wen)度(du)系數之意，習慣性上放(fang)普遍糾正(zheng)電(dian)阻溫(wen)度(du)系數、非常大(da)的半導體器(qi)件(jian)或電(dian)子器(qi)件(jian)等。   

     PTC元件的(de)好(hao)用起源(yuan)于60時代前期最開(kai)始的(de)貨品是用以(yi)晶體三極管(guan)電(dian)源(yuan)電(dian)路的(de)溫度賠償元件，接著用以(yi)電(dian)動機太(tai)熱維護，彩(cai)色電(dian)視去(qu)磁電(dian)磁線圈過流(liu)保護及控溫發(fa)燙等場(chang)所的(de)通用化商品陸(lu)續技術(shu)化，并迅速(su)產(chan)生生產(chan)經(jing)營(ying)規模，1991年(nian)度全球總銷售量超(chao)出(chu)3億只，并正以(yi)15%上(shang)下的(de)年(nian)平均增長率(lv)再次發(fa)展趨(qu)勢。

    在我國對(dui)(dui)PTC元(yuan)件的(de)(de)研制開(kai)發(fa)起源于1964年60時代末技術化，80時代的(de)(de)期關鍵商品通(tong)用化并日(ri)趨完善，1991年度關鍵生產廠家的(de)(de)總(zong)市場銷售(shou)(shou)貼近(jin)0.3億(yi)只(zhi),并不是全球總(zong)市場銷售(shou)(shou)的(de)(de)十分之(zhi)一,但(dan)是在我國在這些方(fang)面發(fa)展,雖算(suan)不上(shang)太(tai)遲,但(dan)發(fa)展趨勢相對(dui)(dui)性遲緩。