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How to Calculate the Junction Temperature for the Nichia 270 Series LEDs

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How to Calculate the Junction Temperature for the Nichia 270 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. This document introduces the method of TJ calculation by measuring the LED outline temperature with thermocouple.

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