What are the factors that distinguish the quality of LED?

Introduction: only a small number of these manufacturers can produce high-quality LED. For applications that use only a simple indication, a low quality LED is sufficient to meet the requirements. But in many requirements of consistency, reliability, etc. in the field of solid state instructions or lighting must be made of high-quality LED, especially in harsh environments, such as highways, military / aerospace, and industrial applications.

Most designers think that all LED products are of the same quality. However, many manufacturers and suppliers of LED, Asian manufacturers to the global supply of low-cost LED. Surprisingly, only a small number of these manufacturers can produce high-quality LED. For applications that use only a simple indication, a low quality LED is sufficient to meet the requirements. But in many requirements of consistency, reliability, etc. in the field of solid state instructions or lighting must be made of high-quality LED, especially in harsh environments, such as highways, military / aerospace, and industrial applications.

What are the factors that distinguish the quality of LED?

Fundamental factor

What are the factors that distinguish the quality of LED? How to tell the difference between the two LED?

In fact, the choice of high quality LED can start from the chip, until the assembly is completed, during which there are many factors to consider. The manufacturing company is able to produce a good, consistent wafer from the high quality of the LED manufacturing materials, which can create a good chip. The chemical material used in the wafer fabrication process is an important factor in determining the conditions for all LED performance indicators. A 2 inch wafer can be cut out of the LED chip, which is only the performance of individual chips and the overall difference between the more than 6 thousand. As an excellent chip manufacturers chip differences in color, brightness and the voltage drop is very small.

When the LED chip package is completed, many of their performance indicators may be very different, such as perspective. In addition, the impact of the packaging material is quite large, for example, the performance of silicone resin is better than epoxy resin.