Long life has been touted as a key advantage of LEDs, but understanding and communicating how LED products fail and how 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.
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.
long they last can be
challenging. In response, the U.S. Department of Energy has come out
with a new SSL Technology Fact Sheet, which are available for free at www.ssl.energy.gov/factsheets.html.
(Thanks to IES for the original post)