The life of LED bulbs varies due to many factors. The following is a detailed introduction:
Theoretical life under ideal conditions
In an ideal laboratory environment, that is, stable power supply, suitable temperature (usually around 25°C), no dust and vibration interference, the theoretical life of LED bulbs can usually reach 25,000-50,000 hours, or even higher. Some high-end products claim a life of up to 100,000 hours.
Actual life in use
In actual home or industrial use scenarios, the life of LED bulbs will be shortened due to various factors:
Power supply stability: If the grid voltage fluctuates greatly and exceeds the rated voltage range of the LED bulb, such as frequent voltage over-high (such as 10%-15% of the rated voltage) or too low, it will accelerate the aging of the LED chip and reduce the life of the bulb, which may drop to 15,000-25,000 hours.
Heat dissipation conditions: Good heat dissipation is essential for LED bulbs. If the heat dissipation design is not good, such as the heat sink is too small, the material has poor thermal conductivity, or the installation position is not conducive to air circulation, the heat cannot be dissipated in time, which will cause the temperature of the LED chip to rise. When the chip junction temperature increases by 10°C, its luminous efficiency and life will decrease significantly. In this case, the actual life may be 10,000-20,000 hours.
Frequency of use and environment: In some environments where lights need to be turned on and off frequently, such as shopping malls, offices and other places, the life of LED bulbs will also be affected to a certain extent. In addition, in an environment with a lot of dust, high humidity or chemical corrosive substances, dust accumulation will affect heat dissipation, moisture may cause internal circuit short circuit or corrosion of components, and chemicals may corrode the bulb shell and internal structure. These will reduce the life of LED bulbs, which may be only 8,000-15,000 hours.
Post time: Feb-25-2025
