LED heat sink

aluminumextrudedpower

Energy-efficient, eco-friendly and long-lasting LEDs are the most common type of light source nowadays. They illuminate boutiques, food stores, hotels, ships, office buildings, churches, museums, cars, streets, buses and trains, and many other areas of daily life. And although LEDs are much more efficient than conventional light bulbs, light emitting diodes likewise convert 75 to 85 percent of the power input into heat, depending on the color and luminous intensity. This heat is dissipated from the barrier layer through the metal connections to the PCB and from there into the environment. The temperature at the barrier layer also affects the dominating wavelength and brightness of the LED and therefore the color of the light. The brightness of the lamp therefore decreases as the temperature rises, and the color also changes. Effective thermal management with LED heat sinks designed for the particular application is therefore essential for ensuring consistent luminous efficiency and color of the LED, as well as a long service life. Special heat sinks for special applications Every application has different requirements for the type of LED and how it is cooled. In the case of small LED lights with a power consumption in the milliwatt range, the solder connections are sufficient to dissipate the heat from the semiconductor crystal. Power consumption of about one watt or more already necessitates the use of (passive) cooling. High-power light emitting diodes that operate with amperage of more than 20 milliamperes produce so much heat that they even require LED heat sinks with forced ventilation (active cooling).