二极管常见的封装类型，DO-15、DO-27、SOD-323、SOD-723等，相信大家都很熟悉。

图源：百度百科

封装指的是安装半导体集成电路芯片用的外壳。对于电子元器件来说，封装是非常有必要的。

一方面，封装不仅起着安装、固定、密封、保护芯片及增强电热性能等方面的作用，而且还通过芯片上的接点用导线连接到封装外壳的引脚上，这些引脚又通过印刷电路板上的导线与其他器件相连接，从而实现内部芯片与外部电路的连接。因为芯片必须与外界隔离，以防止空气中的杂质对芯片电路的腐蚀而造成电气性能下降。

另一方面，按统一规格封装后的芯片，也更便于安装和运输。

细心的电子工程师会发现，电子元器件有着不同的封装类型，不同类的元器件外形虽然差不多，但内部结构及用途却大不同，譬如TO220封装的元件可能是三极管、可控硅、场效应管甚至是双二极管。TO-3封装的元器件有三极管，集成电路等。

今天我们就来盘点一下常见的二极管、三极管、MOS封装类型，下图含精确尺寸。

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辛蓝邢1539怎么区分三极管的3个引脚,要简单的哈. -
董转静15696199595 ______ 最简单的:对于现在制造的TO-92封装的三极管,就是你最常见到的那种.将有标注的那个平面对着你,管脚冲下. 从左至右依次为 E发射极,B基极,C集电极

辛蓝邢1539求助97A6M922是什么三极管
董转静15696199595 ______ 那不是三极管 是可控硅97A6 双向触发三极闸流晶体管 用途:主要用于变频电路及调光、调速电路等. 封装形式:TO-92(T2GT1) 极限值:(Ta=25℃) 参数名称 符号 额定值 单位 断态重复峰值电压 VDRM 400 V VRRM 400 V 通态平均电流 IT(AV)...

辛蓝邢1539pn2907a是什么三极管 -
董转静15696199595 ______ PN2907A是小信号PNP晶体管,属硅外延平面PNP管,互补对管的型号是PN2222A NPN三极管,封装TO-92.适用于电视和家电设备,高增益、饱和压降低的小负荷开关晶体管设计. 参数:VCBO=-60V,VCEO=-60V,VEBO=-5V,Ic=-0.6A,ICM=-0.8A,Pc=500mW,hEF=100~300.

辛蓝邢15392SC8050和2N5551的区别 -
董转静15696199595 ______ 2SC8050 硅 NPN 25V 1.5A FT=190 封装形式:TO-92 直插2N5551 硅 NPN 160V 0.6A FT=100 封装形式:TO-92 直插2N5551代换:3DG12,8550,8050等都可以用来直接代换,脚位无区别.

辛蓝邢1539TO - 92在三极管中指的是什么? -
董转静15696199595 ______ 封装形式.

辛蓝邢1539A817A是什么三极管?参数是什么? -
董转静15696199595 ______ A817A是个PNP 型三极管,TO-92MOD封装,多用于功率放大的驱动级.VCE 80V,IC 400mA

辛蓝邢1539三极管的封装有那些? -
董转静15696199595 ______ 三极管的封装有:TO-92 TO-92S TO-92NL TO-126 TO-251 TO-252 TO-263 TO-220 TO-3 SOT-23 SOT143 SOT-25 SOT-26 SOT-50 SOT223

辛蓝邢1539三极管13001可用什么代替 -
董转静15696199595 ______ 1300系列的所有三极管都可以代替13001,还有就是普通的BU406等等都行,只要参数满足的都可以,比如Vceo=500V的管子,集电极电流在500mA的NPN管子都行. MJE13001是硅NPN型小功率高压高速开关三极管,其主要参数如下: C-B...

辛蓝邢1539Protel里三极管封装TO92在哪个库 -
董转静15696199595 ______ 直接输入TO-92即可,或输入?进行库浏览再调用.9脚的排阻封装就定义SIP9就可以.PROTEL是Altium公司在80年代末推出的EDA软件,在电子行业的CAD软件中,它当之无愧地排在众多EDA软件的前面,是电子设计者的首选软件,它较早...

辛蓝邢1539三极管(13001)用什么常见的型号可以代替 -
董转静15696199595 ______ 13001是硅NPN型小功率高压高速开关三极管,其主要参数如下: C-B极最高耐压:Vcbo=500V 请点击此处输入图片描述 C-E极最高耐压:Vceo=400V E-B极最高耐压:Vebo=9V 集电极电流:Ic=0.3A 耗散功率:PC=7W 直流放大系数:HFE...