Analysis of LED Single LED Lamp Bead Parameter Lamp Beads Dead Lamp

LED lamp beads passing lights are Guan Jian, which affects product quality and reliability. How to reduce and eliminate the death of the dead, improve product quality and reliability, is a key issue that encapsulation and application companies need to solve. Static electricity causes damage to LED chips, which makes the PN of LED chips be removed. The leakage current increases and turns into a resistance static. Therefore, preventing electronic components from damaging electronic components is a very important task in the electronics industry. LED lamp beads packaged and applied companies, thousands of LED lamp beads, do not carelessly. If there is a problem in any link, it will cause damage to LED lamp beads, which will cause the LED lamp bead function to deteriorate or even lose effect. The damage to the LED lamp bead lights is also very old. When things should wear anti -static clothing, with a static electrostatic ring, the electrostatic ring should be grounded well. A good chip or LED lamp bead, if our body does not make any protective measures, take it by hand. The chip or LED lamp bead will be damaged by different levels. It's broken, this is the disaster caused by static electricity. According to the requirements of the LED lamp beads standard manual, the lead of the LED lamp beads should be less than 3-5 mm for the collagen, which is bent or welded. It will also cause damage or damage to LED lamp beads, because excessive welding temperature will affect the chip, which will deteriorate the characteristics of the chip, reduce the lighting efficiency, and even damage LED lamp beads. This phenomenon is common. Some companies use manual welding, using 40W ordinary soldering iron, the welding temperature cannot be controlled, the soldering iron temperature is above 300-400 C. Excessive welding temperature will also cause the dead lamp. The expansion coefficients are several times higher, and the internal gold wire welding joints will pull the welding point open due to thermal expansion and contraction of the New Year, causing the death light phenomenon. Generally, the LED lamp beads encapsulated by the bracket rows are made of copper or iron metal materials with fine molds. Because copper materials are more expensive, the capital is naturally high, and due to the fierce market factors, in order to reduce the manufacturing capital, There are many markets using cold -rolled low -carbon steel to bring stamping LED lamp bead brackets. Silver plating has two functions. One is to prevent oxidation and rust, and the other is to facilitate welding. The electroplating quality of the bracket is very critical. It is related to the life of LED lamp beads. In addition to the meticulous processes such as oil and phosphorusization, the current should be controlled during electroplating. The thickness of the silver plating layer must be controlled. The welding process is also critical. The common four parameters of the gold silk ball welding machine must be just right. Except for the fixed time, the other three parameters are adjustable. The adjustment of the pressure should be moderate. The chip is easily crushed, and it is easy to welded when it is too small. The welding temperature is generally adjusted at 260 C. Users who use LED lamp beads products will also encounter the phenomenon of death lights. This is the phenomenon of mortar lamps after the use of LED lamp bead products for a period of time. There are two reasons for the death lamp. , Or the quality of the bracket electroplating, the leakage current of the LED lamp bead chip will also cause the LED lamp beads to light. The thunder on a rainy day is easily presenting the wire supply line sensor high -voltage static electricity, and the peak pulse superimposed by the power supply line will cause the LED lamp products to encounter different levels of damage. In short, there are many reasons for the existence lamps. It cannot be listed one by one. From the packaging, application, and use of various links, the phenomenon of death may occur. How to improve the quality of LED lamp products is the height Pay attention to and carefully study the issues, from chip, bracket selection, to LED lamp beads to pack the entire process process according to the ISO2000 quality system. Only in this way, the quality of the LED lamp beads can be unilaterally improved, so that the energy can be long life, high and reliable. --- The article comes from LED lamp beads, please indicate Tongjia (China) www.tongjialed.com