Answer: 1000-hour light decay rate, 3000-hour light decay rate, 50,000-hour light decay rate, etc.
Answer analysis: The light decay rate of LED is an important performance indicator, which reflects the degree to which the light output of LED gradually decreases during long-term use.
However, it should be noted that the light decay rate of LED will be affected by many factors, including the packaging quality of LED, chip quality, working environment temperature, working current, and heat dissipation conditions.
Under normal operating temperature (usually refers to the rated operating temperature range of LED, such as -40°C to +85°C or narrower range), the light decay rate of LED will vary. Here are some approximate reference values, but please note that these values may vary depending on the specific product and conditions:
1. 1000-hour light decay rate:
- In good working conditions and high-quality LED products, the 1000-hour light decay rate is usually very low, perhaps only a few percentage points or less. This means that after 1000 hours of use, the light output of the LED is still close to its initial value.
2. 3000-hour light decay rate:
- Similarly, under good working conditions, the light decay rate at 3000 hours is also relatively low. For high-quality LED products, the decay at this stage may still remain at a low level, but it will increase compared to 1000 hours.
3. 50,000-hour light decay rate:
- 50,000 hours is a relatively long period of time, which is usually used to evaluate the life of LEDs. At this point in time, even high-quality LED products may have a certain amount of light decay. However, the specific decay rate will vary from product to product. Some high-quality LEDs may be able to maintain a high light output after 50,000 hours, and the light decay rate may be controlled within 30% or even lower. But some products may show a higher decay rate.
It should be emphasized that the above values are only for reference and cannot be directly applied to all LED products. Each LED manufacturer will set different light decay rate standards based on the characteristics and design of its products. Therefore, when choosing an LED product, it is best to refer to the data sheet or specification provided by the manufacturer for accurate information.
In addition, in order to extend the life of the LED and reduce light decay, it is recommended to pay attention to controlling the operating temperature and current during use, ensure good heat dissipation conditions, and avoid frequent switching operations.