Third party detection LED assembly and circuit structure

Introduction: in addition to accurate screening of LED suppliers through the existing experience, OEM manufacturers must examine circuit design and assembly technology to ensure that they meet the design specifications, and whether the design provides sufficient heat dissipation capability, the main factors that lead to LED failure and inconsistent performance is overheating. In order to meet the design requirements, OEM must detect the assembly and circuit structure of LED.

With the rapid growth of LED demand, manufacturers and assembly plants in the global market are increasing rapidly. Unfortunately, the surge of support manufacturers not only a large number of low quality LED, their packaging and LED design engineer experience is relatively insufficient.

Therefore, in addition to accurate screening of LED suppliers through the existing experience, OEM manufacturers must examine circuit design and assembly technology to ensure that they meet the design specifications, and whether the design provides sufficient heat dissipation capability, the main factors that lead to LED failure and inconsistent performance is overheating.

Third party detection LED assembly and circuit structure

Third party test

In order to eliminate the unfairness in the test, many companies commissioned third party to test the LED assembly and circuit structure. A LED device may be tested or used in harsh environments for several weeks. During the test, the pressure, the temperature cycle, the voltage is fixed / changes, the current fixed / change and other tests, other harsh environmental conditions to determine whether the LED to meet the requirements of the application. A large number of parameter changes before and after the test should be recorded, while monitoring the measured LED brightness, color and voltage changes. Accelerated life cycle testing is a critical test for avoiding failures in specific applications.

Testing helps ensure that those who expect to work at least 100000 hours, but only work for 1000 hours in advance of the failure of LED. This situation is likely to occur because of the low quality of LED (which may also be unreasonably high in assembly design) in LED 1000 hours after the work will be reduced. In fact, a low quality LED if there is a higher drive current, in the beginning of the work will be better than the high quality of LED, however, the high current will make the LED fever too fast, the final result is dimmed or burned. In addition, the assembly technology to some extent, the impact on the performance of the LED than the chip itself is also an example of large.

The design engineer should ask the LED supplier for the reliability specifications of LED, and the LED assembly test should be carried out to ensure that the brightness is higher. They can ensure the reliability of LED assembly technology can be sustained for three years or longer some excellent LED supplier, properly designed and can further provide including high-quality LED and for a special application of the final product, LED.