Product Selection Guide Page 1106 Product Selection Guide-11th Edition

1106 PRODUCT INFORMATION Binning LED TECHNICAL INFORMATION PSG11 TECHNICAL INFORMATION www.acuitybrands.com BINNING The practice of binning is designed to maximize effective utilization in the production of LEDs. This process is most important for luminaire manufacturers to specify and control since it has serious implications on performance, cost and lead-time. It is also important as a point of general awareness for specifiers and end-use customers so they understand how the manufacturing supply chain is ensuring high quality and consistency specifically with regard to critical performance attributes such as light output, color and wattage. To understand binning, it is helpful to first review the process of LED production. In the production of LEDs, a single round wafer is coated with various materials (epitaxial growth) to create the semiconductor which forms the heart of the blue LED. This is then sliced into extremely small rectangles (die). Electrical connections are made to the die (wire bond or flip chip) and the phosphor is added either as a coating or suspension within the LED package. The assembly is then encapsulated to create a finished white light LED package. What is Binning with respect to LEDs? Binning is important for luminaire manufacturers to specify and control since it has serious implications on performance, cost and lead-time.

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