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Thermal Design Considerations for COB LEDs - Selecting an Appropriate Heatsink

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Thermal Design Considerations for COB LEDs - Selecting an Appropriate Heatsink

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COB LEDs can produce high-power outputs and are designed to have multiple LED die assembled close to each other in a single COB LED, causing heat to concentrate in a narrow area. If COB LEDs become excessively hot during operation, it will cause the luminous flux to decrease (i.e. temperature characteristics of COB LEDs) and/or shorten the lifetime. To avoid the performance/reliability degradation, proper thermal management of COB LEDs will be required, especially for the heatsink as it will play the primary role in dissipating the heat of the COB LED.

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