What is the lifespan of D series LED lamps?

The life of D series LED lamps is affected by many factors. Generally speaking:

1. Theoretical life under ideal conditions

Chip quality
If high-quality LED chips are used, their life can reach 50,000-100,000 hours. For example, some well-known brands of D series LED lamps use high-quality gallium nitride (GaN) chips under normal operating temperature and heat dissipation conditions, and theoretically can continue to emit light for 5-10 years (calculated based on 5 hours of use per day).

Heat dissipation design
Good heat dissipation design is essential to extend the life of LED lamps. When the heat dissipation is good, the temperature of the LED lamp can be kept at a low level. In this case, the life of the D series LED lamp can be close to the theoretical value. For example, some D series LED lamp products that use high-efficiency heat sinks and large-size fans for heat dissipation can reach about 80,000 hours under ideal conditions.

2. Actual life in use

Working environment temperature
In high temperature environments, such as hot desert areas or high temperatures in the engine compartment of a car, the life of the D series LED lamp will be significantly shortened. If it is often exposed to high temperatures of 80-90°C, its lifespan may be reduced to 30,000-50,000 hours.
On the contrary, in an environment with a more suitable temperature, such as an indoor environment with a temperature of 10-30°C all year round or a car modification environment with good heat dissipation, the lifespan will be closer to the theoretical value.
Frequency and duration of use
Frequent switching on and off of D-series LED lamps will also affect their lifespan. For example, frequent flashing operations every day or long-term operation at maximum power will accelerate the aging of the electronic components inside the LED lamp. If it is used for more than 10 hours a day and often runs at full load, its lifespan may be reduced to 30,000-60,000 hours.
Power quality
Unstable power supply, such as large voltage fluctuations or electromagnetic interference, will cause damage to D-series LED lamps. If the power supply voltage often fluctuates by more than ±10% of the rated voltage, the lifespan of the LED lamp may be reduced to 20,000-40,000 hours.
In summary, the life of D series LED lamps is longer under ideal conditions, but in actual use, due to the influence of various factors, its life span will fluctuate greatly.