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封装LED发光二极管正负极判断

封装LED发光二极管正负极判断
封装的 正负极判别方法

  焊接过程中,常遇到如何辨认发光二极管的正负极,这部尤其重要,灯亮不亮就在他了!
 

  第一种观察法。从侧面观察两条引出线在管体内的形状.较小的是正极. 如下图  

 

  其次看引脚长短也可以看出来,发光二极管的正负极,引脚长的为正极,短的为负极!

  DIERZHONGWANYONGBIAOJIANCEFA。YONGWANYONGBIAOJIANCEFAGUANGERJIGUANSHI,BIXUSHIYONG“R×l0k”DANG。KUNWEIQIANMIANWOMENYIJINGJIANGGUO。FAGUANGERJIGUANDEGUANYAJIANGWEI2V.ERWANYONGBIAOCHUYU“R×lk” JIQIYIXIAGEDIANZUDANGSHI.BIAONEIDIANCHIJINWEI1.5V。DIYUGUANYAJIANG.WULUNZHENG、FANXIANGJIERU,FAGUANGERJIGUANDOUBUKENENGDAOTONG,YEJIUWUFAJIANCE。。R×1k”DANGSHIBIAONEIJIEYOU9V(HUO 15V)GAOYADIANCHI,GAOYUGUANYAJIANG,SUOYIKEYIYONGLAIJIANCEFAGUANGERJIGUAN。JIANCESHI.JIANGLIANGBIAOBIFENBIEYUFAGUANGERJIGUANDELIANGTIAOYINXIANXIANGJIE,RUBIAOZHENPIANZHUANGUOBAN,TONGSHIFAGUANGERJIGUANZHONGYOUYIFALIANGGUANGDIAN,BIAOSHIFAGUANGERJIGUANSHIZHENGXIANGJIERU,ZHEISHIYUHEIBIAOBI(YUBIAONEIDIANCHIZHENGJIXIANGLIAN)XIANGJIEDESHIZHENGJI;YUHONGBIAOBI(YUBIAONEIDIANCHIFUJIXIANGLIAN)XIANGJIEDESHIFUJI。ZAIJIANGLIANGBIAOBIDUIDIAOHOUYUFAGUANGERJIGUANXIANGJIE,ZHEISHIWEIFANXIANGJIERU,BIAOZHENYINGBUDONG。RUGUOBULUNZHENGXIANGJIERUHAISHIFANXIANGJIERU,BIAOZHENDOUPIANZHUANDAOTOUHUODOUBUDONG,ZEGAIFAGUANGERJIGUANYISUNHUAI。

  判断草帽led正负极

  CAOMAOledZHENGFUJIJIUXIANGDUIHAOQUFENLE,HAISHIYONGZUIJIANDANDEFANGFABA

 

  从图上我们不难看出led内部两根块状的引脚,我们叫做led的,其中负极支架比较大,原因是负极支架托载着led的芯片,正极支架比较小!

  SUOYIWOMENDECHUDEJIELUNJIUSHI:“MUCE,ledNEIBU,ZHIJIADALIANJIEDEYINJIAOSHIFUJI,ZHIJIAXIAODELIANJIEDEYINJIAOSHIZHENGJI”

  HAIYOUYIGEBIJIAOJIANDANDEFANGFAJIUSHI,RUGUONIDEledSHIGEBIJIAOXINDE,YINJIAODOUHAIJIANQUANDEHUA,ZHIJIEKANYINJIAODEZHANGDUAN,JIUKEYIFENCHULAILE“ZHENGJIYINJIAOBIJIAOZHANG”

彩经网  QISHIHAIYOUHENDUODEFANGFA,LAIJIANCEledZHENGFUJI,BIJIAONIUDEFANGFAJIUSHIYONGWANYONGBIAO

  判断5050贴片led正负极

  5050TIEPIANledSHIYIKUANZAIledJIENENGDENGXINGYEZHONGBIJIAOCHANGYONGDAODETIEPIANled,DANSHIHENDUOYONGHUZAINADAO5050TIEPIANledBUZHIDAOZENMEHANJIE,YUANYINJIUSHIBUZHIDAORUHEQUFEN5050TIEPIANledZHENGFUJI,JINTIANWOMENJIUJIDAJIASHUOXIARUHEQUFEN5050TIEPIANledZHENGFUJI,WOMENCAIYONGTUPIANDEXINGSHI,ZHIGUANDEXIANGDAJIAJIESHAOXIA,XIWANGDUIDAJIAYOUYONG!

彩经网  ZHENGGE5050TIEPIANledSHIZHENGFANGXINGDE,SIGEZHIJIAOZHONGYOUYIGEJIAODAIGEXIAOQUEJIAO,JIUSHITUZHONGHONGSEXIAOYUANQUANDENEIGEDIFANG,QITADEZHIJIAOMEIYOUXIAOQUEJIAO,DAIXIAOQUEJIAODENEIDUANJIUSHIFUJI,LINGYIDUANSHIZHENGJI!