1. What is the relationship between junction temperature and LED luminous flux?
- The higher the junction temperature result the smaller the luminous flux , and the higher the junction temperature will result the LED working state will be drop.
2. What is the relationship between junction temperature and LED life? (general luminous flux dropped to 70% when we think LED over.
- The junction temperature of 105 degrees, the flux decreased rapidly to 70%, then the LED lamp life is about 10 thousand hours, if the control temperature to 55 degrees, LED life can be up to 100 thousand + hours.
So, we have to find a way to cool down and let LED dissipate the heat that you have.