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      半導體知識
      首頁 > 產品知識>>半導體知識 >>二極管組件的結構及性能特點

      二極管組件的結構及性能特點

      二極管組件的結構及性能特點
      發布時間:2012-03-15 點擊次數:1030次

      二極管組件的結構及性能特點 二極管組件由2只或2只以上的二極管組合而成,主要是為了縮小體積和便于安裝。
        常用的二極管組件有整流橋堆、高壓硅堆及二極管排等。
       ?。ㄒ唬┱鳂蚨?br />   整流橋堆一般用在全波整流電路中,它又分為全橋與半橋。
        1.全橋 全橋是由4只整流二極管按橋式全波整流電路的形式連接并封裝為一體構成的,圖4-65是其電路圖形符號與內部電路,圖4-66是其外形。
       
       


        全橋的正向電流有0.5A、1A、1.5A、2A、2.5A、3A、5A、10A、20A等多種規格,耐壓值(最高反向電壓)有25V、50V、100V、200V、300V、400V、500V、600V、800V、1000V等多種規格。


        常用的國產全橋有QL系列,進口全橋有RB系列、RS系列等。


        2.半橋 半橋是由兩只整流二極管封裝在一起構成的,它有4端和3端之分,如圖4-67所示。4端半橋內部的兩只二極管各自獨立,而3端半橋內部的兩只整流二極管的負極與負極相連或正極與正極相連,如圖4-68所示。

      用1只半橋可以組成全波整流電路,用2只半橋可組成橋式全波整流電路。
         常用的半橋有1/2QL系列。


       ?。ǘ└邏汗瓒?/p>


        高壓硅堆是由多只硅整流二極管串聯組成的耐高壓整流器件(其最高反向電壓在幾千至幾萬伏之間),主要用于電子儀器及黑白電視機中。圖4-69是高壓硅堆的外形。



        常用的高壓硅堆有2DGL、2CGL等系列。


       ?。ㄈ┒O管排
        二極管排是將2只或2只以上的二極管封裝在一起組成的,其內電路有共陰(將各只二極管的負極接在一起)型、共陽(將各只二極管的正極接在一起)型、串接型和獨立腳點型等多種連接形式。


        圖4-70是幾種二極管排的外形與內部電路。


        常用的3端二極管排(內含兩只二極管)有DAN209、DAN201、DAN215、DAN208、DAP208、DA203、DA210S、DA216、DA218S等型號。5端二極管排(內含4只二極管)有DAN401、DAP401等型號。7端二極管排(內含6只二極管)有DAN601、DAP601等型號。9端二極管排(內含8只二極管)有DAN801、DAN803、DAP801、DAP803等型號。

      `
    3. 更新時間:2016-05-30
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