Many people have encountered the dead light condition caused by the application of LED street lights. Then why is the dead light condition caused by the application of LED street lights? What solutions are there? Let us organize the detailed instructions for you.

Why do led street lamps cause dead lights? There are two main reasons for the LED street lamp to generate a dead light: the excessive leakage current of the LED leads to the failure of the PN junction, which causes the LED street lamp not to light up. Such things generally do not affect the operation of other LED lamps. The connection lead of the internal structure of the led street lamp is disconnected, resulting in the dead lamp due to the lack of electric flow of the led, which will affect the normal operation of other led lamps.

In the LED packaging production line, it is also important to see whether the resistance of the grounding wire of various machines and equipment meets the requirements. Generally, the resistance of the grounding wire is required to be 4 ohms. In some cases, the resistance of the grounding wire must be ≤ 2 ohms. Excessive welding temperature will also lead to the dead light condition of led. The thermal expansion coefficient of led lead at high temperature is several times higher than that at about 160 ℃. The gold wire solder joints of internal structure will also be pulled apart due to excessive thermal expansion and cold contraction, leading to the dead light condition.