Datasheet L251 (Citizen) - 6

SPECIFICATIONS 6/9 6. Reliability (1)Details of the tests Test Item Test Condition Room Temperature Ta=25℃,IF=480mA(Tj=61.5℃)×1000 hours Operating Life Test (with Al-fin) High Temperature Ta=50℃,IF=480mA(Tj=86.3℃)×1000 hours Operating Life Test (with Al-fin) Low Temperature Storage Test -40℃× 1000 hours High Temperature Storage Test 100℃× 1000 hours Moisture proof Test 60±2℃, 90±5%RH for 1000 hours Thermal Shock Test -40℃×30minutes - 100℃× 30minutes,100 cycle (2)Judgment Criteria of Failure for Reliability Test (Ta=25℃) Measuring Item Symbol Measuring Condition Judgment Criteria for Failure Forward Voltage VF IF=480mA >U×1.1 Total Luminous Flux ΦV IF=480mA <S×0.85 U defines the upper limit of the specified characteristics.S defines the initial value. Note: Measurement shall be taken between 2 hours and 24 hours, and the test pieces should be returned to the normal ambient conditions after the completion of each test. CL-L251-MC4L reliability test results will be used for CL-L251-MC6L1. Approved Checked Drawn Symbol CITILED Name CL-L251-MC6L1 Drawing No Mark Date Description Appro. CITIZEN ELECTRONICS CO.,LTD. Ref.CE-P407 04/09