AB20-6 Datasheet, PDF (1/11 Pages) Lumileds Lighting Company – Reliability Considerations for SuperFlux LEDs

application brief AB20 6
replaces AN1149 6
Reliability Considerations
for SuperFlux LEDs
LEDs provide solid state lighting and are therefore extremely durable. If the
recommended soldering and operating conditions are followed, SuperFlux LEDs
will survive for the life of the vehicle.
SuperFlux LEDs have performed well in a number of durability, reliability, and
accelerated life tests. Some of these tests are summarized in Lumileds’ SuperFlux LED
Reliability Data Sheet. A current revision can be obtained by contacting your local
Field Sales Engineer or at the following URL: http://www.Lumileds.com
This section is dedicated to communicating: 1) the major tests included in the
Reliability Data Sheet, 2) the appropriate testing of assemblies containing SuperFlux LEDs,
and 3) providing information regarding the typical change in SuperFlux LED light output
over typical application lifetimes. Please note that the Reliability Data Sheet also
includes the cumulative sample size and failure rate (if other than zero).
Table of Contents
Durability, Reliability, & Accelerated Life Tests
2
Mechanical Shock
2
Vibration
2
Operating Life
3
Weatherability
3
Corrosion Resistance
3
Temperature Cycle
3
Simultaneous Power and Temperature Cycle
4
Solder Heat Resistance Strife Test
5
Recommended LED Assembly Validation Tests
6
Verifying Root Causes of Power & Temperature Cycle Failures
6
Changes in Light-Output During the Operating Life
of AlInGap SuperFlux LEDs
8
1