Precautions for heat dissipation of led high-power LED chip
Led high-power led chip is a kind of LED lamp beads. Compared with low-power LED lamp beads, led high-power lamp beads have higher power, brighter brightness and higher price. Low-power LED lamp beads have a rated current of 20mA, and those with a rated current higher than 20mA can basically be counted as high-power.
Led High-power led chip
Precautions for heat dissipation of high-power led chip:
1. Heat sink requirements.
Appearance and material: If the sealing requirements of the finished product are not high, it can directly convection with the outside air environment. It is recommended to use finned aluminum or copper heat sinks.
2. Effective heat dissipation surface area:
For 1W high-power LED white light (other colors are basically the same), our company recommends that the total effective heat dissipation surface area of the heat sink is ≥50-60 square centimeters.
3. connection method:
When connecting the high-power LED aluminum substrate and the heat sink, please ensure that the two contact surfaces are flat and in good contact. In order to strengthen the combination of the two contact surfaces, it is recommended to coat the bottom of the LED aluminum substrate or the surface of the heat sink with a layer of thermal grease (thermal conductive silicone grease) Thermal conductivity ≥3.0W/mk), thermally conductive silicone grease should be applied evenly and in an appropriate amount, and then fixed with screws.
