Light decay, generally speaking, the longer use time, the greater light decay, and the brightness of the lamp will become darker and darker until it is not bright in the end. The light decay of an LED is related to its junction temperature. The junction temperature is the temperature of the semiconductor PN junction. Generally speaking, the higher the junction temperature, the earlier the light decay occurs and the shorter the lamp life. In order to extend the life of the LED lamp, the key factor is to reduce the junction temperature. To reduce the junction temperature, a good heat sink is required. In summary, if you want to make the life of the LED lamp longer, you must choose a good heat sink. At present, the better heat dissipation is the aluminum radiator.
