USA - Philips Lumileds ( http:// ) continues to advance its core LED technology and recent breakthroughs implemented in the latest LUXEON Rebel LEDs for illumination applications improve efficacy and light output performance at luminaire operating temperatures.
Hot/Cold Factor compares the light output of the LED at 100∑C Tj and at 25∑C Tjwhich is how LEDs are specified on a datasheet. LEDs in a luminaire are operated at very high junction temperatures, often between 80∑C and 110 ∑C.
With a hot/Cold Factor of 0.93, the just released LUXEON Rebel LEDs deliver more light and better efficacy than virtually any other power LED. Typical Hot/Cold Factors range from 0.80 - 0.85 at junction Temperatures of 100∑C. Maximizing this factor is critical as companies design solid-state lighting solutions that are intended to meet ENERGY STAR requirements.
"Hot/Cold Factor is one of the clear differentiators between LEDs," said Rudi Hechfellner, Director of Technical Solutions. "A high HC Factor can simplify the thermal system design and lower the cost in lumen in the final application."
Hot/Cold Factor compares the light output of the LED at 100∑C Tj and at 25∑C Tjwhich is how LEDs are specified on a datasheet. LEDs in a luminaire are operated at very high junction temperatures, often between 80∑C and 110 ∑C.
With a hot/Cold Factor of 0.93, the just released LUXEON Rebel LEDs deliver more light and better efficacy than virtually any other power LED. Typical Hot/Cold Factors range from 0.80 - 0.85 at junction Temperatures of 100∑C. Maximizing this factor is critical as companies design solid-state lighting solutions that are intended to meet ENERGY STAR requirements.
"Hot/Cold Factor is one of the clear differentiators between LEDs," said Rudi Hechfellner, Director of Technical Solutions. "A high HC Factor can simplify the thermal system design and lower the cost in lumen in the final application."
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