LED is durable because it does not cause the filament to blow. The LED will not stop working directly, but it will gradually degrade over time. General LED can use more than 50,000 hours, its luminous intensity will gradually drop from the nominal value to about 70%. The main reasons that affect the LED life are the following three components: light source, power supply and shell.
1. Light source: The quality of the LED chip is an important factor that affects the lifespan. At the same time, the design and materials of the chip can affect the lifetime of the LED. LED packaging technology is also an important cause of the impact of LED life, a reliable packaging manufacturers have a great relationship for the life of the LED.
2. The design of the power supply: Because the LED discreteness is very strong, the voltage drop, wavelength, light color, and height are very different. Only the LEDs with the same number of indicators can be used in parallel to use the same. The high current is small, resulting in light color, high unevenness, and a long life of the current. The life of the power supply is also an important reason. Generally, the electrolytic capacitor has a life of 8,000 hours at 105°C, 15,000 hours at 40 to 60°C, and 30,000 hours without an electrolytic capacitor.
3. Design of heat dissipation: Heat dissipation is one of the most important reasons that affect the lifespan of LEDs. The light emission of LEDs requires current drive. Only about 15% of the power input to the LED is effectively converted to light, and most (about 85%) are Invalid and turned into heat. Among them, the ambient temperature is very important, and the ambient temperature can influence the change of the LED lamp heat dissipation temperature by 5 to 20 degrees.