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一顆小水珠對LED燈珠有多嚴重?

2016-10-28 17:07:46 次瀏覽 分類:行業資訊

  YIGEROUYANBUKEJIAN,DANSHIQUEFENBUZAIWOMENZHOUWEIDESHUIZHENGQISHUIDIHUIDUILEDDENGZHUZAOCHENGDUODADESHANGHAI?KENENGNIHUIJUEDEWEIYANSONGTING,DANSHISHISHIQUEGAOSUWOMEN,XUDUOLEDXIANSHIPINGDESHIGUJIUSHIZHEXIEWEIBUZUDAODEXIAOSHUIDISUOZAOCHENGDE。

  一顆小水珠對LED產品有多嚴重?

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  一顆小水珠對LED產品有多嚴重?(圖解)

  BOLIXIANXIANGFANGDASHIYITU

  WEILEJIANCEFENGZHUANGCHANGSUOZHIZAODELEDDENGZHUJUBEIZUGOUDEKANGCHAOSHINENGLI,BIMIANCHUXIANSHANGSHUYINXIANBOLIXIANXIANG,IPC/JEDEC DINGYILEYITAOBIAOZHUNDE『SHIDUMINGANDENGJI』 RUXIA,YOUXUYAODERENYEKEYIDAO JEDEC GUANFANGWANGZHANXIAZAIJ-STD-020D.1。

  GAIWENJIANQUEDINGFEIMIFENGGUTAIBIAOMIANTIEZHUANGQIJIAN(SMD)SHUIFENDAOZHIYINGLIMINGANFENLEIJIBIE,YONGYUQUEDINGCHUBUKEKAOXINGJIANDINGYINGCAIYONGDEFENLEIJIBIE。YIDANFENLEIJIBIEQUEDING,SMDQIJIANZAIFENGZHUANG、CUNFANG、CHULIGUOCHENGZHONGKEYICAIQUSHIDANGCUOSHI,BINGZAIZHUANGPEIHANJIEHUILIUFUZHUYU/HUOXIULICAOZUOGUOCHENGZHONGBIMIANREYUJIXIESUNHUAI。

  『SHIDUMINGANDENGJI』MSL (Moisture Sentivity levels),YOUXIAOPAIDAODA,SHUZIYUEXIAODEBIAOSHIQIKANGSHIDUNENGLIYUEHAO;SHUZIYUEDADE,BIAOSHIQIKEYIPULUYUHUANJINGSHIQIDESHIJIANYAOYUEDUAN。

  GENJUMSLBIAOZHUN,XIANSHIPINGCHANGYUGONGCHENGSHANGJIUHENRONGYITIAODAOYIKUANPINZHIHEGEDEDENGZHULE,BINGQIEDUILEDDENGZHUZAIHOUXUJIAGONGGUOCHENGDEFENGZHUANG、CUNFANG、CHULIYOULEMINGQUEDEGUIDING。YOUYUCIXIANGBIAOZHUNDUILEDDENGZHUPINZHIYAOQIUJIAOGAO,GANCAIYONGDEFENGZHUANGQIYEYEFEICHANGSHAO,GUOWAIDEYOUKERUIJIRIYA,GUONEIZEYOUMEIKALE、LEIMAN、LANKE。

  YIDENGJI3 (level 3)LAIJULISHUOMING,RUGUOLINGJIANBAOLUZAISHESHIWENDU30°CYU60%SHIDUYINEIDEHUANJINGXIA,NEIMEQICUNFANGSHIJIANJIUBUKEYICHAOGUO 192XIAOSHI (QIZHONGXUKOUCHULEDFENGZHUANGCHANGDE 24XIAOSHIDEPULUSHIJIAN,SUOYILEDXIANSHIPINGCHANGJIUZHISHENGXIA168XIAOSHI(=192-24)DECHEJIANSHIJIANLE),YEJIUSHISHUODUIYUDENGJI3DELEDYUANQIJIANCONGZHENKONGBAOZHUANGZHONGQUCHUHOU,JIUBIXUZAI168GEXIAOSHINEIDAJIANBINGGUOWANReflow (HUILIUHAN)。RUGUOBUNENGZAIGUIDINGSHIJIANNEIGUOWAN Reflow,JIUBIXUYAOZHONGXINZHENKONGBAOZHUANG,ZUIHAOSHIZHONGXINHONGKAOHOUZAIZHONGXINBAOZHUANG,YINWEIZHONGXINHONGKAOHOUDESHIJIANJIUKEYIGUILINGZHONGSUAN 。RUGUOCHAOGUOGUIDINGSHIJIAN,ZEYIDINGYAOZHONGXINHONGKAOHOUCAINENGSHIYONG。

  HUIDIAOYIKUAILEDXIANSHIPINGBUXUYAOQIANGFENGBAOYU,YIKEXIAOSHUIDIZUYI。

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