What Rre The Factors Affecting The Quality Of LED Products?

Most people assume that all LED products are of the same quality.LED manufacturers and suppliers are numerous, however, only a few of these manufacturers are able to produce high-quality LED.For simple applications, low-quality LED is sufficient.However, if led products require consistency, reliability or in the fields of led road lighting,high-quality LED is necessary, especially in harsh environments such as highways, military/aviation, and industrial applications.

As demand for LED has grown rapidly, so have the number of manufacturers and assembly plants serving the global market.In addition to accurately selecting LED suppliers based on existing experience, OEM manufacturers must also examine their circuit design and assembly techniques to ensure that they meet design specifications and that the design provides adequate heat dissipation, as the main cause of LED lighting failures and inconsistent performance is overheating.

To reduce the risk of unfair testing, many companies have commissioned third parties to test the assembly and circuit structure of LED.An LED part may be tested in a harsh environment or used for several weeks.During the testing process, pressure and temperature cycles, voltage fixed/variable, current fixed/variable, and other harsh environmental conditions are tested to determine whether the LED meets the requirements of the application.Numerous parameter changes before and after the test were recorded, and changes in LED brightness, color, and voltage drop were monitored.

Accelerated life cycle testing is a key test to avoid failures in a particular application domain.Testing helps to single out LED that are expected to work at least 100,000 hours but fail in advance for working only 1,000 hours.This is possible that the brightness of low-quality LED reduce after 1,000 hours working.In fact, a lower-quality LED with a higher driving current will be brighter than a higher-quality LED at the beginning of operation. However, too much current will cause the LED to heat too quickly, resulting in dimming or burning.

In addition, there are examples where assembly technology has a greater impact on LED performance than the chip itself.The design engineer should ask the LED supplier for LED reliability specifications, and should also conduct LED assembly tests to ensure that the brighter ones are really better.

Not every LED application requires high quality LED assembly technology.If there are no strict requirements for LED assembly, the application does not necessarily present a significant safety risk.Or, if the maintenance cost of the final product is not very high, a poorer assembly technique may be more appropriate.