Hierarchical Reliability Assessment Models for Novel LED-Based Recessed Down Lighting Systems

This chapter describes development of hierarchical reliability assessment models for novel LED-based lighting systems. Much of the chapter is excerpted from references (Arik et al., IEEE Trans Compon Packag Tech 33:668–679, 2010; Song et al., IEEE Trans Compon Packag Tech 33:728–737, 2010; Song et al., Microelectron Reliab 2011) and technical details omitted in the chapter can be found in the references. After a brief introduction about the motivation of LED-based recessed down lighting systems, Sect. 18.2 is devoted to luminaire subcomponent development and the challenges to realize a high-lumen luminaire at an affordable cost. In Sect. 18.3, a hierarchical reliability prediction model to assess the lifetime of LED-based lighting systems is first described, and the model is subsequently implemented for the LED-based recessed down lighting system cooled by synthetic jets.