Aluminum nitride ceramic parts:

Aluminum nitride ceramics have excellent properties such as high thermal conductivity, high strength, high resistivity, low density, low dielectric constant, non-toxicity, and thermal expansion coefficient matching Si, and will gradually replace traditional high-power LED substrate materials. The most promising ceramic substrate material in the future. Generally speaking, the luminous efficiency and service life of the LED will decrease with the increase of the junction temperature. When the junction temperature reaches 125°C or higher, the LED may even fail. In order to keep the LED junction temperature at a lower temperature, a heat dissipation substrate material with high thermal conductivity and low thermal resistance and a reasonable packaging process must be used to reduce the overall package thermal resistance of the LED.