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Thermal Design Considerations for PCBs for the Nichia 170 or 131 Series LEDs

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Thermal Design Considerations for PCBs for the Nichia 170 or 131 Series LEDs

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The thermal management for the LEDs is managed by Junction Temperature (TJ). If TJ value is out of spec. as overheated, it brings negative influence on reliability and might occur No-light mode at the worst case. Therefore, the thermal design is important such as not exceeding maximum TJ defined in the specification. The LEDs have such structures typically as radiating heat mainly from the package backside, and the PCB is related and important factor to consider thermal management. This document introduces thermal designs with some evaluated results including simulations.

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