What is the junction temperature of high power LED?
The light source adopts modular design, to achieve the best matching ground illumination and power, by increasing or decreasing the number of light sources, to meet the different pavement width and illumination requirements, to meet the lighting requirements of the city and not to waste energy purposes.
TJ has a great influence on the luminous rate and life of LED: the higher the TJ, the lower the LED yield and the shorter the life time.
In the calculation of heat dissipation of general power devices (such as power IC), as long as the junction temperature is less than the maximum allowable junction temperature (usually 125 degrees Celsius). But in the heat dissipation design of high-power LED, its junction temperature TJ requirement is much lower than 125 centigrade.
