日韩精品视频免费,三级精品在线观看,偷妻之寂寞难奈,偷妻之寂寞难奈,亚洲高清免费视频,久久久久资源,战狼3在线观看免费版高清电影

  
Location:Home > News Center >

Newsdetail

    Application Notice
    author:管理員   addtime:2010-07-02 17:14:31.000   hits:9755

    Application Notice
     

    (1) FORMING:   
        1.Please don't form the LED after soldering.If forming is necessary,it must be done before soldering.   
        2.Any unsuitable stress applied to the epoxy body may break bonding wires in LED.   
        3.The minimum distance for the place to bend the lead frame is 2mm from the base of resin.  
    (2) SOLDERING:   
        1.Soldering Bath -260℃±5℃ within 5 seconds.  
    Soldering Iron- Under 30W within3 seconds.(1.6mm from epoxy body)   
        2.Don't apply any force or mechanical stress onto the leads or epoxy body during soldering heat is remained.   
        3.If one line of LEDs are soldered by using a soldering iron,don't solder the leads of the LED at the same time.   
        4.It needs three minutes to cool down to normal room temperature.  
    (3) CLEANING:    
        1.Use alcohol,freon TE or chlorosen to clean LED at normal temperature for less than 1 minute.   
        2.Don't use unspecified chemical liquid because it may cause crack or haze on the surface of the epoxy body.  
    (4) PREVENTING OVER CURRENT:   
        1.In order to operate LED in stable condition,please put protective resistors less series.   
        2.Resistor value can be determined by the formula   
            R=(Vs-VF)/ IF           Where Vs=Source Voltage   
                                            VF=Forward Voltage of LED   
                                            IF=Recommended Current of LED(10~20mA)  
    (5) BRIGHTNESS:   
        1.For the purpose of obtaining uniform brightness,LEDs shall be kept at the same current.   
        2.It is useful for uniform brightness if you use larger sauce voltage and protective resistor.

永和县| 和龙市| 福海县| 滨海县| 呼和浩特市| 长阳| 赣榆县| 洛南县| 大名县| 阳江市| 富源县| 嘉黎县| 怀安县| 和田县| 清原| 通海县| 菏泽市| 花莲县| 宜良县| 林周县| 汉源县| 鹿邑县| 舞阳县| 樟树市| 筠连县| 谷城县| 策勒县| 黑龙江省| 阳山县| 淮南市| 旬阳县| 刚察县| 靖远县| 瑞昌市| 邢台县| 台州市| 舒兰市| 营口市| 郎溪县| 娱乐| 南丹县|