What types of LED lamps are there? Causes and prevention of dead lights of LED lamps
What type of LED lamps are there? Light-emitting diode lamps, also known as LED lamps, are becoming the main product of the new generation of lighting market due to their high efficiency, energy saving, longevity, compactness and other technical characteristics, and effectively promote the rapid development of the environmental protection and energy saving industry. The common types of LED lamps on the market mainly include the following product types: LED spotlights, LED lamp cups, LED lamp sockets, LED lamp holders, LED lamp strips, LED lamps, LED lamps, LED strips, LED flexible strips, LED light strings, LED bulbs, LED light beads, LED wicks, LED chips, LED downlights, LED candle lights, LED star lights, LED induction lights, high-power LED lights, high-power LED energy-saving lamps, LED voice-activated lights, etc.
Causes and prevention of dead lights of LED lamps: LED packaging companies and LED lighting manufacturers will encounter the phenomenon of dead lights of LED lamps. As an LED engineer, analyze and solve these problems.
There are two main reasons for LED dead lights: 1. The leakage current of the LED lamps is too large, which causes the PN junction to fail, so that the LED lamps do not light up. This situation generally does not affect the work of other LED lamps; The internal connection leads are disconnected, causing the LED lamps to have no current passing through, resulting in dead lights, which will affect the normal operation of other LED lamps.
Prevention of dead lights: Static electricity is a very harmful devil to LED lamps. There are countless electronic components damaged by static electricity in the world. Therefore, preventing static electricity from damaging electronic components is a very important job in the electronics industry. LED packaging and application companies must not take it lightly. Any problem in any link will cause damage to the LED lamps and make the performance of the LED lamps deteriorate or even fail. Generally, the grounding resistance is required to be 4 ohms, and in some occasions with high requirements, the grounding resistance may even reach ≤2 ohms. The damage of human body static electricity to LED lamps is also very large. Wear anti-static clothing and wear an electrostatic ring when working. The electrostatic ring should be well grounded. There is an electrostatic ring that does not need to be grounded. With this kind of product, if the staff violates the operating rules, they should receive corresponding warning education, and also play the role of notifying others. Some companies use manual soldering and use a 40-watt ordinary soldering iron. The soldering temperature cannot be controlled. The soldering iron temperature is above 300-400 °C. Too high soldering temperature will also cause dead lights. The expansion coefficient is several times higher, and the internal gold wire solder joints will pull the solder joints apart due to excessive thermal expansion and contraction, resulting in a dead lamp phenomenon. In response to the above phenomena, LED packaging manufacturers and LED lighting application manufacturers should formulate strict LED standard manuals to prevent the occurrence of the above phenomena in the production process.
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