Small. Simple. Smart. DURIS S 8 LED by OSRAM Opto Semiconductors. The revolutionary new DURIS S 8 packs a lot of smart into one small package. It’s the most efficient, most powerful little LED you’ll find — perfect for any downlight, spotlight or retrofit. DURIS S 8 family is known as CHIP ARRAY SMD (CAS) in the SSL portfolio. The multi-chip family is highlighted by high luminous flux, high forward voltage and high color consistency. It provides totally new opportunities for all indoor lighting and especially directional retrofit applications.