Lighting Research Center Lighting Research Center

ASSIST: Alliance for Solid-State Illumination Systems and Technologies

ASSIST recommends... LED Life for General Lighting

Published February 2005; Revised April 2006 and August 2007
ASSIST recommends

This publication provides guidelines to define the life of LED components and systems used in general lighting, including methods for measuring life and sample data recording sheets. These recommendations have been developed as a first step toward establishing standards for LED lighting components and systems and to help manufacturers present consistent information to purchasers and end users of LED systems.

August 2007 Revision: Issue 3 and Issue 6 of this volume have been revised to show additional temperatures at which LED systems should be tested in some cases.

April 2006 Revision: The "Proposed Definition" section of Issue 7, "Recommendations for the Definition and Specification of Useful Life for Light-Emitting Diode Light Sources," has been revised for clarification.

Volume 1, Issues 1-7: LED Life for General Lighting PDF


The following organizations are thanked for their input over the course of preparing this publication: Boeing, California Energy Commission, Cooper Lighting, GELcore, Lighting Research Center at RPI, Lightolier, Lumileds Lighting, New York State Energy Research and Development Authority, Nichia America Corp., OSRAM SYLVANIA, Peerless Lighting, Philips Lighting, TIR Systems, Toyoda Gosei, and the U.S. Environmental Protection Agency.


Estimating LED Life

LRC Project Summary Sheet PDF

"Industry alliance proposes standard definition for LED life." LEDs Magazine, April 2005

Press Release: Lighting Research Center industry group distributes guidelines for reporting LED life

Rensselaer Polytechnic Institute
LRC Intranet Web mail Lighting Research Center