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。
","gnid":"9240990bf1032510b","img_data":[{"flag":2,"img":[{"desc":"","height":"457","title":"","url":"https://p0.ssl.img.360kuai.com/t01e3b71dde3e2a2add.jpg","width":"573"},{"desc":"","height":"699","title":"","url":"https://p0.ssl.img.360kuai.com/t01edfef6ec62c934b9.jpg","width":"723"},{"desc":"","height":"763","title":"","url":"https://p0.ssl.img.360kuai.com/t016a7f2eaa1c0ce07d.jpg","width":"723"},{"desc":"","height":"885","title":"","url":"https://p0.ssl.img.360kuai.com/t017f2d8df0c06d30d2.jpg","width":"723"},{"desc":"","height":"780","title":"","url":"https://p0.ssl.img.360kuai.com/t0195671cd7627eb2d0.jpg","width":"723"},{"desc":"","height":"765","title":"","url":"https://p0.ssl.img.360kuai.com/t01208bf1c935c73fda.jpg","width":"723"},{"desc":"","height":"762","title":"","url":"https://p0.ssl.img.360kuai.com/t01287825c601a1805e.jpg","width":"723"},{"desc":"","height":"727","title":"","url":"https://p0.ssl.img.360kuai.com/t010486e8be17865257.jpg","width":"723"},{"desc":"","height":"859","title":"","url":"https://p0.ssl.img.360kuai.com/t01113ccaffdf1eb607.jpg","width":"723"},{"desc":"","height":"884","title":"","url":"https://p0.ssl.img.360kuai.com/t01fcdd6bf77d7a0690.jpg","width":"723"},{"desc":"","height":"886","title":"","url":"https://p0.ssl.img.360kuai.com/t016d22310303b83ca9.jpg","width":"723"},{"desc":"","height":"885","title":"","url":"https://p0.ssl.img.360kuai.com/t01ca4d3a64e6d9c758.jpg","width":"723"},{"desc":"","height":"884","title":"","url":"https://p0.ssl.img.360kuai.com/t01983340c019471ddf.jpg","width":"723"},{"desc":"","height":"882","title":"","url":"https://p0.ssl.img.360kuai.com/t016235a6903da21e65.jpg","width":"723"},{"desc":"","height":"883","title":"","url":"https://p0.ssl.img.360kuai.com/t017cedb93ff85060d2.jpg","width":"723"},{"desc":"","height":"883","title":"","url":"https://p0.ssl.img.360kuai.com/t012d787752f84c686c.jpg","width":"723"},{"desc":"","height":"886","title":"","url":"https://p0.ssl.img.360kuai.com/t01e8e481fd06f63ce2.jpg","width":"723"},{"desc":"","height":"887","title":"","url":"https://p0.ssl.img.360kuai.com/t01b042dff975978a13.jpg","width":"723"},{"desc":"","height":"883","title":"","url":"https://p0.ssl.img.360kuai.com/t01c1108d4b6dc0a8ca.jpg","width":"723"},{"desc":"","height":"883","title":"","url":"https://p0.ssl.img.360kuai.com/t01c1108d4b6dc0a8ca.jpg","width":"723"},{"desc":"","height":"886","title":"","url":"https://p0.ssl.img.360kuai.com/t01699047073e68c4a9.jpg","width":"723"},{"desc":"","height":"886","title":"","url":"https://p0.ssl.img.360kuai.com/t0125f749eb79b709a5.jpg","width":"723"}]}],"original":0,"pat":"art_src_0,fts0,sts0","powerby":"cache","pub_time":1681369684000,"pure":"","rawurl":"http://zm.news.so.com/425b1f9d6f86e3046ee1e52c71ea9df0","redirect":0,"rptid":"fdb0329cc18a4274","rss_ext":[],"s":"t","src":"华秋商城","tag":[{"clk":"ktechnology_1:芯片","k":"芯片","u":""},{"clk":"ktechnology_1:集成电路","k":"集成电路","u":""}],"title":"二极管/三极管/MOS管的封装类型，看这一篇就够了！
饶斧疯1836电脑主板上的MoS管怎么用万用表测量?怎么判断好坏? -
屠园响13559296475 ______ 万用表打到响铃挡,测任意MOS管其中的两个引脚.响铃表示MOS已经被击穿,也就是已经坏了!
饶斧疯1836如何识别场效应管 -
屠园响13559296475 ______ 帮你找的,希望有用. 【场效应管的识别】 场效应管在电路中常用字母“v”、“VT”加数字表示,如VT1表示编号为1的场效应管.对于国产场效应三极管的型号, 现在有两种命名方法.一是与普通三极管相同:第三位宁母J代表结型场效应...
饶斧疯1836怎么判断MOS管是N沟道还是P沟道? -
屠园响13559296475 ______ 万用表打二极管档,G极不管它,黑表笔接D极,红表笔接S极能导通的话就是N沟道,反过来表笔互换能导通就是P沟道,导通电压一般0.4-0.7V,这样能明白了吧
饶斧疯1836如何测定MOS功率开关管?
屠园响13559296475 ______ (1)首先应识别管脚.用万用表检测,将万用表设定在电阻XlkΩ档: ①红表笔接任一脚,黑表笔轮流测其余两脚与红表笔脚之间的电阻,记录数值; ②红表笔换测另一脚,黑表笔测剩余两脚电阻,记数数值; ③再将红、黑两表笔颠倒过来,管脚不变,按照①、②顺序,测得另一组数值. 三次检测所得数据中有一组中某个数值为∞,或是均为5—l0kΩ,则红表笔所测脚为G极. (2)其次区别管型.在已知管脚的条件下,仍然用万用表来判断管型,方法是: 红表笔接G脚,黑表笔接D、S脚,电阻值为∞时,是N沟道管;电阻值为5-l0kΩ时,是P沟道管. 表笔交换,黑表笔接G极,红表笔接D、S极,当电阻值为∞时,是P沟道管;电阻值为5~l0kΩ时,是N沟道管.
饶斧疯1836mos管 集成电路 肖特基怎么区分 -
屠园响13559296475 ______ 1、看文字,从文字、特别是型号上能分辩, 2、看管脚,mos管3~4个脚,且较粗; 集成电路,脚数不限,但都比较细, 肖特基脚数2~3个圆柱形居多, 3、对于贴片封装的,看个头大小,mos管 集成电路 肖特基一般是从大到小加以区分, 不明情况下,一般不宜测量区分.
饶斧疯1836选用场效应管时应注意哪些事项?
屠园响13559296475 ______ 选用场效应管时应注意这些事项:①选用场效应管时,不能超过其极限参数.② 结型场效应管的源极和漏极可换.③ MOS管有3个引脚时,表明衬底已经与源极连在一起...
饶斧疯1836场效应管的极性判别 -
屠园响13559296475 ______[答案] 场效应管检测方法与经验 一、用指针式万用表对场效应管进行判别 (1)用测电阻法判别结型场效应管的电极 根据场效应管的PN结正、反向电阻值不一样的现象,可以判别出结型场效应管的三个电极.具体方法:将万用表拨在R*1k档上,任选两个电...
饶斧疯1836为什么电脑主板上的那个mosfet 管中间的管脚是短的被剪掉了的样子是不是不用中间那根脚,mos管不也是三个脚 -
屠园响13559296475 ______ 能确认是场效应管吗?mos管肯定得有三个脚才能工作,三极管少之脚好歹还能当二极管使,mos管似乎是没用了
饶斧疯1836电动车控制器MOS管如何检测好坏 -
屠园响13559296475 ______ 首先,断开控制器与电源连接,把控制器粗黑线与粗红线碰接短路,这样做的目的是放完内部电容余电. 然后,把三根粗黄线对粗黑碰线短接,目的同上.一定要放电后再进行测量.这三根粗黄线实际上是三根相线. 做完以上准备工作后...
饶斧疯1836试解释mos管具有电压放大作用的基本原理? -
屠园响13559296475 ______ 其实简单的说就是输入的信号控制源极到漏极阻抗(沟道),从而使加在输出端上的电压(因为它的电流通过源极到漏极)随着输入信号变化而变化!如果还是不明白就看:http://ba...