Qualification Reliability Testing
Stress Conditions
Stress Test
Room Temperature
Operating Life (RTOL)
Wet High Temperature
Operating Life (WHTOL)
Wet High Temperature
Storage Life (WHTSL)
High Temperature
Stress Duration Failure Criteria
25°C, IF = max DC (Note 1)
85°C/60%RH, IF = max DC (Note 1)
85°C/85%RH, non-operating
110°C, non-operating
1000 hours
1000 hours
1000 hours
1000 hours
1000 hours
200 cycles
200 cycles
Note 2
Note 2
Note 2
Note 2
Note 2
Note 2
Note 2
Note 3
Note 3
Note 3
Note 3
Storage Life (HTSL)
Low Temperature
-40°C, non-operating
Storage Life (LTSL)
Non-operating
-40°C to 120°C, 30 min. dwell,
<5 min. transfer
Temperature Cycle (TMCL)
Non-operating
-40°C to 120°C, 20 min. dwell,
<20 sec. transfer
Thermal Shock (TMSK)
1500 G, 0.5 msec. pulse,
5 shocks each 6 axis
Mechanical Shock
Natural Drop
On concrete from 1.2 m, 3X
10-2000-10 Hz, log or linear sweep rate,
20 G about 1 min., 1.5 mm, 3X/axis
Variable Vibration
Frequency
Solder Heat Resistance
(SHR)
260°C ± 5°C, 10 sec.
Steam age for 16 hrs., then solder dip
at 260°C for 5 sec.
Solder coverage
on lead
Solderability
Notes:
1. Depending on the maximum derating curve.
2. Criteria for judging failure
Criteria for Judgement
Item
Test Condition
IF = max DC
IF = max DC
VR = 5V
Max.
Min.
--
Forward Voltage (VF)
Luminous Flux or
Initial Level x 1.1
Initial Level x 0.7
--
Radiometric Power (ΦV)
Reverse Current (IR)
50 μA
--
* The test is performed after the LED is cooled down to the room temperature.
3. A failure is an LED that is open or shorted.
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