5. Reliability
5-1. Reliability Test
Test Item
Test Condition
IF=180mA , Ta= 25C (with Al-fin) ×1000hrs
IF=180mA , Tj=150C (with Al-fin) ×1000hrs
-40 C × 1000 hours
Continuous Operation Test
Low Temperature Storage Test
High Temperature Storage Test
Moisture-proof Test
100 C × 1000 hours
85 C, 85 %RH for 500 hours
Thermal Shock Test
-40 C × 30 minutes – 100 C × 30 minutes, 100 cycle
5-2. Failure Criteria
( Tc=25C )
Failure Criteria
Measuring Item
Forward Voltage
Symbol
Vf
Measuring Condition
If=180mA
>U × 1.1
<S × 0.85
Total Luminous Flux
Φv
If=180mA
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
return to the normal ambient conditions after the completion of each test.
9
Ref.CE-0140P-201801
CITIZEN [ CITIZEN ELECTRONICS CO., LTD. ]
