Understanding of LED Bead Chips.P4 outdoor LED module distributors

　　LED bead chips can be divided into small power LED chips, medium power LED chips, and high-power LED chips based on power. The detailed size of LED bead chips is determined based on the practical production levels of different LED bead chip manufacturers, and there are no detailed requirements. As long as the process is passed, LED bead chips can improve unit output and reduce costs, without fundamentally changing their photoelectric performance. The application current of LED bead chips is actually related to the current density flowing through the chip. Small chips have low application current, while large chips have high application current, and their unit current density is basically the same. Assuming that the operating current of a 10mil chip is 20mA, then a 40mil chip can theoretically increase the operating current by 16 times, which is 320mA. But the heat dissipation of LED beads is the main issue we are considering, so the high current of large chips has lower luminous power than the low current of small chips. Otherwise, as the area increases, the resistance of the chip will decrease, resulting in a decrease in the forward conduction voltage.

　　High power LED bead chips for white light are generally available in the market at around 40mil, and the applied power of high-power LED bead chips generally refers to an electrical power of over 1W. Due to the fact that the conversion power of light is generally less than 50%, most of the electrical energy is converted into thermal energy. Therefore, the heat dissipation of high-power LED bead chips is important, requiring a large area of the chip for heat dissipation.

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