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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(wei)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(ban)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、開關、微特電(dian)(dian)(dian)機、電(dian)(dian)(dian)子(zi)變壓(ya)器(qi)、繼電(dian)(dian)(dian)器(qi)、印(yin)(yin)制(zhi)電(dian)(dian)(dian)路(lu)板(ban)(ban)、集成電(dian)(dian)(dian)路(lu)、各類電(dian)(dian)(dian)路(lu)、壓(ya)電(dian)(dian)(dian)、晶體、石英、陶瓷磁(ci)性材(cai)料(liao)(liao)、印(yin)(yin)刷電(dian)(dian)(dian)路(lu)用基材(cai)基板(ban)(ban)、電(dian)(dian)(dian)子(zi)功能(neng)工藝專(zhuan)用材(cai)料(liao)(liao)、電(dian)(dian)(dian)子(zi)膠（帶）制(zhi)品、電(dian)(dian)(dian)子(zi)化學(xue)材(cai)料(liao)(liao)及部(bu)品等(deng)。

電子元件符號認識

電(dian)子元件有許多種，為了區分一般用“字(zi)母+數(shu)(shu)字(zi)”的(de)形式(shi)表(biao)(biao)(biao)示。電(dian)阻用“R+數(shu)(shu)字(zi)”表(biao)(biao)(biao)示，電(dian)容用“C+數(shu)(shu)字(zi)”表(biao)(biao)(biao)示，電(dian)容容量誤差表(biao)(biao)(biao)符號為F、G、J、K、L、M，晶體二(er)極管用“D+數(shu)(shu)字(zi)”表(biao)(biao)(biao)示，穩壓二(er)極管用“ZD+數(shu)(shu)字(zi)”表(biao)(biao)(biao)示，電(dian)感用“L+數(shu)(shu)字(zi)”表(biao)(biao)(biao)示，晶體三極管用“Q+數(shu)(shu)字(zi)”表(biao)(biao)(biao)示。

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)能保障產(chan)品的質(zhi)量(liang)。此(ci)外要考慮(lv)電(dian)子元(yuan)件(jian)的型號細節部(bu)分(fen)，如產(chan)品的誤差、材質(zhi)等。最(zui)后需要控制成(cheng)本，考慮(lv)性價比(bi)方面的需求，切勿貪小(xiao)便宜(yi)，可以先小(xiao)批量(liang)采樣再大規模采購。

電子元件的作用

1、繼電(dian)器：在電(dian)路(lu)中起著自動調節、安全保(bao)護、轉換電(dian)路(lu)等作用(yong)。

2、電容器：應(ying)用于隔直，耦(ou)合，旁路(lu)，濾波，調諧回路(lu)， 能(neng)量轉換，控制電路(lu)等方(fang)面。

3、連接器(qi)(qi)：連接兩個有源器(qi)(qi)件的器(qi)(qi)件，傳輸電流或信(xin)號。

4、電位器：用于分壓(ya)的可變電阻器。