New DOE SSL Technology Fact Sheet on Lifetime and Reliability
Long life has been touted as a key advantage of LEDs, but understanding and communicating how LED products fail and how long they last can be challenging. The U.S. Department of Energy has come out with a new SSL Technology Fact Sheet, Lifetime and Reliability, to help users gain a better understanding of typical causes for LED product failures, the difference between lifetime and reliability, and methods for measuring and reporting lifetime and reliability.
LED system performance is more affected by interactions between system components than most conventional lighting systems. The failure of any system component—not just the array of LED packages, but also the electronics, thermal management, optics, wires, connectors, or seals, for example—can lead to product failure.
The accurate portrayal of LED product lifetime and reliability is important for consumers, manufacturers, and the lighting industry as a whole. Lifetime and Reliability is the latest in DOE’s growing library of SSL Technology Fact Sheets, which are available for free at www.ssl.energy.gov/factsheets.html.
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Jim Brodrick