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電子元件有哪些

電(dian)(dian)(dian)子(zi)元器(qi)件(jian)包括：電(dian)(dian)(dian)阻、電(dian)(dian)(dian)容器(qi)、電(dian)(dian)(dian)位器(qi)、電(dian)(dian)(dian)子(zi)管、散熱器(qi)、機電(dian)(dian)(dian)元件(jian)、連接器(qi)、半導體分立器(qi)件(jian)、電(dian)(dian)(dian)聲器(qi)件(jian)、激光(guang)器(qi)件(jian)、電(dian)(dian)(dian)子(zi)顯示器(qi)件(jian)、光(guang)電(dian)(dian)(dian)器(qi)件(jian)、傳感器(qi)、電(dian)(dian)(dian)源(yuan)、開關、微特(te)電(dian)(dian)(dian)機、電(dian)(dian)(dian)子(zi)變壓器(qi)、繼電(dian)(dian)(dian)器(qi)、印(yin)制電(dian)(dian)(dian)路(lu)板、集成(cheng)電(dian)(dian)(dian)路(lu)、各類電(dian)(dian)(dian)路(lu)、壓電(dian)(dian)(dian)、晶體、石英、陶瓷磁性材料、印(yin)刷電(dian)(dian)(dian)路(lu)用(yong)基(ji)材基(ji)板、電(dian)(dian)(dian)子(zi)功能工藝(yi)專(zhuan)用(yong)材料、電(dian)(dian)(dian)子(zi)膠（帶）制品、電(dian)(dian)(dian)子(zi)化(hua)學材料及部(bu)品等。

電子元件符號認識

電(dian)子元件有許(xu)多種，為(wei)了區(qu)分一(yi)般(ban)用(yong)(yong)“字(zi)(zi)母+數(shu)(shu)字(zi)(zi)”的形式表(biao)(biao)(biao)示(shi)(shi)。電(dian)阻用(yong)(yong)“R+數(shu)(shu)字(zi)(zi)”表(biao)(biao)(biao)示(shi)(shi)，電(dian)容(rong)用(yong)(yong)“C+數(shu)(shu)字(zi)(zi)”表(biao)(biao)(biao)示(shi)(shi)，電(dian)容(rong)容(rong)量誤差(cha)表(biao)(biao)(biao)符號(hao)為(wei)F、G、J、K、L、M，晶體(ti)二(er)極管用(yong)(yong)“D+數(shu)(shu)字(zi)(zi)”表(biao)(biao)(biao)示(shi)(shi)，穩壓二(er)極管用(yong)(yong)“ZD+數(shu)(shu)字(zi)(zi)”表(biao)(biao)(biao)示(shi)(shi)，電(dian)感用(yong)(yong)“L+數(shu)(shu)字(zi)(zi)”表(biao)(biao)(biao)示(shi)(shi)，晶體(ti)三極管用(yong)(yong)“Q+數(shu)(shu)字(zi)(zi)”表(biao)(biao)(biao)示(shi)(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(cai)能保(bao)障產(chan)品的(de)質量(liang)。此外要(yao)(yao)考(kao)慮電(dian)子(zi)元件的(de)型號細(xi)節(jie)部(bu)分，如產(chan)品的(de)誤(wu)差、材質等。最(zui)后需要(yao)(yao)控制成本(ben)，考(kao)慮性價比方面的(de)需求，切勿貪小便宜，可以先小批量(liang)采樣再(zai)大規模采購。

電子元件的作用

1、繼電器：在(zai)電路中起著自(zi)動調節、安全保(bao)護(hu)、轉換(huan)電路等作用。

2、電容器：應用于隔直(zhi)，耦合，旁(pang)路(lu)，濾波，調諧回路(lu)， 能量轉換，控(kong)制電路(lu)等(deng)方面。

3、連接(jie)器(qi)：連接(jie)兩個有源器(qi)件(jian)的器(qi)件(jian)，傳(chuan)輸(shu)電流或信號。

4、電位器：用于分(fen)壓的可變電阻器。