IES TM-26-20 PDF Download

The IES TM-26-20 standard provides guidelines for assessing the catastrophic failure rate of LED packages. This information is crucial for the design, manufacturing, and warranty considerations of LED lamps and luminaires. Catastrophic failure refers to situations where the LED package ceases to produce any light. Such failures can be caused by improper product design, manufacturing processes, or incorrect usage. However, it is important to note that LED packages have significantly lower catastrophic failure rates compared to other light sources, typically ranging from parts per million to parts per billion hours. To effectively evaluate the overall reliability of LED lamps and luminaires, both the luminous flux maintenance life and the catastrophic failure rate need to be considered. The standard outlines three methodologies for projecting the catastrophic failure rate of LED packages.