Everyone knows that thermal resistance is the hindering effect of an object on the conduction of heat. The unit of thermal resistance is °C/W, that is, the temperature difference between the two ends of the heat conduction path when the object's continuous heat transfer power is 1W. This article will explain the factors that affect the thermal resistance of LED components and the methods to reduce the thermal resistance of LED components.
1. The LED chip structure and raw materials are also one of the factors that affect the thermal resistance of the LED, and reducing the thermal resistance of the LED itself is a prerequisite.
2. Heat sink materials with different thermal conductivity, such as copper, aluminum, etc., also have a great influence on the thermal resistance of LEDs. Therefore, selecting a suitable heat sink material is also one of the methods to reduce the thermal resistance of LED components.
3. Even if the same heat sink material is used, it is directly related to the size of the heat dissipation area. The secondary heat dissipation design is good, and the area is large, which correspondingly reduces the thermal resistance, which has a great impact on the luminous efficiency and life of the LED. Great effect.
4. The thermal conductive glue used for the LED chip is directly connected to the metal, and different materials including the thermal conductive glue and metal will affect the thermal resistance of the LED. It is necessary to minimize the thermal resistance between the LED and the mounting interface of the secondary heat dissipation mechanism.
5. If the working environment temperature of the LED component is too high, it will also affect the thermal resistance of the LED component, so try to reduce the ambient temperature.
6. Select certain materials and control the technical details such as the rated input power, in order to improve the luminous efficiency of the LED and prolong the life of the LED, and handle the heat dissipation of the LED.
