How to avoid corrosion of high power smd LED chip?
High-power LED lamp beads can continue to operate under most different conditions. However, once the LED lamp bead is corroded, the LED lamp bead is chemically reacted by the surrounding environment, which will reduce the performance of the LED lamp bead.
Avoiding the corrosion of LED lamp beads is an important part of improving the reliability of LED lamp beads. The reliability of LED lamp beads is one of the important specifications used to estimate the product life of LED lamp beads. Tongjia Optoelectronics analyzed the reasons for the corrosion of LED lamp beads, and gave methods to avoid the corrosion of LED lamp beads - to avoid LED lamp beads from approaching harmful substances, and to effectively limit the concentration level and ambient temperature of harmful substances.
In order to prevent the LED lamp beads from being corroded, avoid contact with harmful substances such as O-rings (O-RING), gaskets, organic rubber, foam pads, sealing rubber, sulfur-containing vulcanized elastomers, and shock-proof pads.
Even a small amount of harmful substances can cause LED lamp beads to corrode. Even if the LED lamp beads only come into contact with corrosive gases during processing, such as machines in production lines, it may have adverse effects. In these cases, it is usually possible to observe the LED assembly for damage before the actual system setup. If LED lamp beads cannot completely avoid these harmful substances, LED lamp beads with higher corrosion resistance should be used.
Remind everyone: The effect of LED lamp beads to limit corrosion depends on the concentration of harmful substances. Even if you choose more durable LED beads, you should minimize the exposure of these LED beads material. Often, heat, humidity and light can accelerate the corrosion process. However, the main influencing factors are the concentration level and temperature of harmful substances, and limiting these two will be an important and reasonable method to protect LED lamp beads from corrosion.
