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Life of LED Lamps is affected by -
1. Thermal Management ( The Junction temperature of Diode )
2. Air Flow around the LED
3. Voltage fluctuations (in case of Integral luminaires )
4. Operating Conditions.
1. LED Quality itself,
2. Driver Quality
3. Supply Voltage Quality
4. Ambient Temeparture
5. Heat Vent/Exhaust
First the operating temperature, this is related with air vent of fixture and the quality of the fixed current driver.
HEAT