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電子元件有哪些

電(dian)(dian)(dian)(dian)子(zi)元器(qi)(qi)(qi)(qi)件(jian)包括：電(dian)(dian)(dian)(dian)阻、電(dian)(dian)(dian)(dian)容器(qi)(qi)(qi)(qi)、電(dian)(dian)(dian)(dian)位器(qi)(qi)(qi)(qi)、電(dian)(dian)(dian)(dian)子(zi)管、散熱器(qi)(qi)(qi)(qi)、機(ji)(ji)電(dian)(dian)(dian)(dian)元件(jian)、連(lian)接器(qi)(qi)(qi)(qi)、半(ban)導體分立器(qi)(qi)(qi)(qi)件(jian)、電(dian)(dian)(dian)(dian)聲器(qi)(qi)(qi)(qi)件(jian)、激光器(qi)(qi)(qi)(qi)件(jian)、電(dian)(dian)(dian)(dian)子(zi)顯示器(qi)(qi)(qi)(qi)件(jian)、光電(dian)(dian)(dian)(dian)器(qi)(qi)(qi)(qi)件(jian)、傳(chuan)感器(qi)(qi)(qi)(qi)、電(dian)(dian)(dian)(dian)源(yuan)、開關(guan)、微特電(dian)(dian)(dian)(dian)機(ji)(ji)、電(dian)(dian)(dian)(dian)子(zi)變(bian)壓器(qi)(qi)(qi)(qi)、繼(ji)電(dian)(dian)(dian)(dian)器(qi)(qi)(qi)(qi)、印制電(dian)(dian)(dian)(dian)路板(ban)、集成電(dian)(dian)(dian)(dian)路、各(ge)類電(dian)(dian)(dian)(dian)路、壓電(dian)(dian)(dian)(dian)、晶體、石英、陶瓷磁性材料、印刷電(dian)(dian)(dian)(dian)路用基材基板(ban)、電(dian)(dian)(dian)(dian)子(zi)功能(neng)工藝專用材料、電(dian)(dian)(dian)(dian)子(zi)膠（帶）制品(pin)、電(dian)(dian)(dian)(dian)子(zi)化學材料及(ji)部品(pin)等。

電子元件符號認識

電(dian)子元件有許多種，為了區(qu)分一般用(yong)“字(zi)母+數(shu)字(zi)”的形(xing)式表(biao)(biao)(biao)示(shi)。電(dian)阻用(yong)“R+數(shu)字(zi)”表(biao)(biao)(biao)示(shi)，電(dian)容用(yong)“C+數(shu)字(zi)”表(biao)(biao)(biao)示(shi)，電(dian)容容量誤差(cha)表(biao)(biao)(biao)符號(hao)為F、G、J、K、L、M，晶(jing)體二(er)極管(guan)用(yong)“D+數(shu)字(zi)”表(biao)(biao)(biao)示(shi)，穩(wen)壓二(er)極管(guan)用(yong)“ZD+數(shu)字(zi)”表(biao)(biao)(biao)示(shi)，電(dian)感用(yong)“L+數(shu)字(zi)”表(biao)(biao)(biao)示(shi)，晶(jing)體三(san)極管(guan)用(yong)“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(zhang)產(chan)品的(de)質(zhi)量。此外要考慮電子元件的(de)型(xing)號細節部分(fen)，如產(chan)品的(de)誤(wu)差、材(cai)質(zhi)等。最后需要控制成本，考慮性價比方面的(de)需求(qiu)，切勿貪小便宜，可以先小批量采樣再大規模采購。

電子元件的作用

1、繼電(dian)器：在(zai)電(dian)路中起著自動(dong)調節、安全保(bao)護、轉換(huan)電(dian)路等作用。

2、電(dian)容器(qi)：應(ying)用于(yu)隔直，耦(ou)合，旁路(lu)，濾波，調(diao)諧(xie)回路(lu)， 能(neng)量轉換(huan)，控制電(dian)路(lu)等方面。

3、連(lian)(lian)接(jie)器：連(lian)(lian)接(jie)兩個(ge)有源器件(jian)的(de)器件(jian)，傳輸(shu)電流或信號。

4、電(dian)位器：用于分(fen)壓的(de)可變電(dian)阻器。