ASSEMBLY INTERCONNECT RELIABILITY IN SOLID STATE LIGHTING APPLICATIONS – PART 1

Customer expectations for light emitting diode (LED) based luminaries (Solid State Lighting) are very high due to the relatively high cost of such luminaries. For commercial and outdoor residential applications, a B50, L70 of 35,000 hours and a 3 year warranty is needed to meet EnergyStar Category A requirements. For such high reliability and lifetime requirements, it is critical to have excellent assembly interconnect reliability (i.e. Package to Insulated Metal Substrate attach). This study presents the results of initial work related to understanding the reliability of Solid State Lighting assembly interconnects in a LED Package-Insulated Metal Substrate system.