九九热在线精品,热99精品在线,国产精品久久久久电影,国产亚洲欧美日韩综合另类,九九热免费在线观看,亚洲精品免费观看,99视频免费播放

  
Location：Home > News Center >

Newsdetail

    QUALITY CONTROL AND ASSUR
    author：管理員   addtime：2010-07-02 17:15:54.000   hits：8665

    QUALITY CONTROL AND ASSURANCE

     
    (1) SAMPLING PLAN
    U.S.Ministry of defense MIL-STD-105D level Ⅱ(single sampling plans)
    (2) INSPECTION ITEMS AND CRITERIONS FOR JUDGEMENTS
    “Measuring Methods for Light Emitting Diodes (No.11830)”and “Light Emitting Diodes(No.11829)”
    Stipulated by ministry of economical affairs of R.O.C and by reference to Q.C.standards prevailing in prominent LED plants worldwide.
    (3) RELIABILITY TESTS
    “General Provisions for Environmental Tests of CNS-Catagorized Electronic Parts”3623-3634,5637,11233~11238,and U.S.Ministry of National Defense Mil-STD-750 Specifications.
     
     

    ITEM
    OPERATING METHOD
    THERMAL SHOCK TEST
    LED placed in a chamber (-44℃)for 20 minutes,temperature increased instaneously to +88℃ for 20 minutes.The duration of the test shall be for 10 complete cycles.
    HUMIDITY TEST
    LED placed in a humidity chamber which is maintained at 40℃,95%R.H.The duration of the test is for 96 hours.
    LIFE TEST
    LED connected to a source of power and charged with 10mA at room temperature(25℃)for1000hours.
    SOLDERABILITY TEST
    The pins of LED(16mm from body)dipped into tin which is maintained at 260℃±5℃.The duration of the test is for 5 seconds.
    VIBRATION TEST
    LED placed on a vibrator which is maintained at 10-55-10 Hz/minute.
    0.82mm amplitude.The duration of the test is for 30 minutes.
    PACKING TEST
    LED packed in a corrugated fiberboard box and fallen freely on 6 faces at a diagonal angle to the ground.The altitude of the fall will be in the range of 229-609mm considering of the packed product.

     
    THE MEASURING TERMS AFTER TEST AND FAILURE CRITERIA ARE AS FOLLOWS:

    MEASURING TERMS
    FAILURE CRITERIA
    LUMINOUS INTENSITY(Iv)
    LOWER STANDARD LIMIT ×0.5
    FORWARD VOLTAGE(V)
    UPPER STANDARD LIMIT ×1.2
    REVERSE CURRENT(IR)
    UPPER STANDARD LIMIT ×2.0

     
芦溪县| 砚山县| 肇源县| 塔城市| 甘孜| 云南省| 建德市| 靖边县| 五河县| 密山市| 黄大仙区| 哈密市| 郑州市| 临汾市| 神木县| 万全县| 怀安县| 南投县| 九寨沟县| 九寨沟县| 阿城市| 和政县| 叙永县| 九江市| 耒阳市| 湾仔区| 双峰县| 开平市| 左权县| 榕江县| 佛坪县| 慈利县| 博爱县| 丘北县| 方城县| 沾化县| 星座| 岚皋县| 葫芦岛市| 成都市| 固安县|