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npn与pnp的区别

更新时间: 2021-03-02 08:31:11     

1、二者构成不同:

(1)PNP型三极管是由2块P型半导体中间夹着1块N型半导体所组成的三极管;

(2)NPN型三极管,由三块半导体构成,其中两块N型和一块P型半导体组成,P型半导体在中间,两块N型半导体在两侧。

2、二者PN结的方向不同:

(1)PNP是共阴极,即两个PN结的N结相连做为基极,另两个P结分别做集电极和发射极;

(1)NPN则刚好于此相反。

关键词: npn pnp 区别

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