Testing Big Chip LEDs

https://download.luminus.com/datasheets/Luminus_APN_APN-001843.pdf

Luminus Devices manufactures high performance Big Chip LEDs for a variety of illumination applications, previously thought impossible for solid state lighting. Big Chips, by virtue of their size, are rated at relatively high drive currents and require unique electrical and thermal solutions; addressing the LED’s electrical and thermal requirements is crucial in accurately specifying its performance.

This application note explains how Big Chip LEDs are tested at Luminus, the techniques, protocols and equipment used to report their performance. LEDs, though known their long lifetimes, are sensitive to drive currents, and electrical overstress can significantly reduce their lifetime. This note explains how to regulate drive currents and avoid electrical overstress when energizing Big Chip LEDs; and gives suggestions on how LEDs can be tested for functionality.

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