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電子元件有哪些

電(dian)(dian)(dian)(dian)子(zi)元(yuan)器(qi)件(jian)包括：電(dian)(dian)(dian)(dian)阻、電(dian)(dian)(dian)(dian)容器(qi)、電(dian)(dian)(dian)(dian)位器(qi)、電(dian)(dian)(dian)(dian)子(zi)管、散熱(re)器(qi)、機電(dian)(dian)(dian)(dian)元(yuan)件(jian)、連(lian)接器(qi)、半導體分立器(qi)件(jian)、電(dian)(dian)(dian)(dian)聲器(qi)件(jian)、激光(guang)器(qi)件(jian)、電(dian)(dian)(dian)(dian)子(zi)顯(xian)示(shi)器(qi)件(jian)、光(guang)電(dian)(dian)(dian)(dian)器(qi)件(jian)、傳感器(qi)、電(dian)(dian)(dian)(dian)源、開關、微特電(dian)(dian)(dian)(dian)機、電(dian)(dian)(dian)(dian)子(zi)變壓器(qi)、繼電(dian)(dian)(dian)(dian)器(qi)、印制(zhi)電(dian)(dian)(dian)(dian)路(lu)板、集成(cheng)電(dian)(dian)(dian)(dian)路(lu)、各類電(dian)(dian)(dian)(dian)路(lu)、壓電(dian)(dian)(dian)(dian)、晶體、石英、陶(tao)瓷磁(ci)性材料(liao)(liao)、印刷電(dian)(dian)(dian)(dian)路(lu)用基材基板、電(dian)(dian)(dian)(dian)子(zi)功(gong)能(neng)工藝專(zhuan)用材料(liao)(liao)、電(dian)(dian)(dian)(dian)子(zi)膠（帶）制(zhi)品(pin)、電(dian)(dian)(dian)(dian)子(zi)化(hua)學材料(liao)(liao)及部品(pin)等(deng)。

電子元件符號認識

電子元件有(you)許多(duo)種，為了區分一般(ban)用“字(zi)母+數(shu)字(zi)”的形式表(biao)(biao)(biao)示(shi)。電阻用“R+數(shu)字(zi)”表(biao)(biao)(biao)示(shi)，電容用“C+數(shu)字(zi)”表(biao)(biao)(biao)示(shi)，電容容量誤差表(biao)(biao)(biao)符號為F、G、J、K、L、M，晶體二極管(guan)用“D+數(shu)字(zi)”表(biao)(biao)(biao)示(shi)，穩壓二極管(guan)用“ZD+數(shu)字(zi)”表(biao)(biao)(biao)示(shi)，電感用“L+數(shu)字(zi)”表(biao)(biao)(biao)示(shi)，晶體三極管(guan)用“Q+數(shu)字(zi)”表(biao)(biao)(biao)示(shi)。

電子元件采購注意事項

最需要注意的是找正規工商注冊的公司進行采購，了解供應商資質，三證是否齊全，只有優質的電子元件品牌才能保障產(chan)品的(de)質量(liang)。此外要考慮電子(zi)元件的(de)型號(hao)細節(jie)部分，如產(chan)品的(de)誤差、材(cai)質等。最(zui)后(hou)需要控制成本，考慮性價比方面(mian)的(de)需求，切勿貪(tan)小(xiao)便宜，可以先小(xiao)批量(liang)采樣再(zai)大規模采購。

電子元件的作用

1、繼電器：在電路中起著自動調節、安全保護(hu)、轉(zhuan)換電路等作用。

2、電(dian)容(rong)器：應用于隔直，耦合，旁路，濾波，調(diao)諧回路， 能(neng)量轉換(huan)，控(kong)制電(dian)路等方面。

3、連接器：連接兩(liang)個有源器件(jian)的器件(jian)，傳輸(shu)電流(liu)或信(xin)號。

4、電位器：用于分壓的可變電阻器。