News Article
SemiLEDs completes LM80 test with IST
The Taiwanese headquartered firm claims to have become one of the first to pass a third party LM-80 test in Taiwan, performed by IST, required by Energy Star
SemiLEDs, in cooperation of Integrated System Technology (IST), has announced that its S35 product line has successfully completed the requirements of the stringent 6000 hour lumen maintenance test (LM-80). The results showed an extrapolated lifetime of up to 50,000 hours.
“LED components are sensitive to heat and most failures in lighting fixtures involves thermal mistreatment. Therefore, verifying the degradation at various temperatures is very critical,” says Kevin Tsui, VP of Reliability Engineering Department of IST.
Tsui further explains that LM-80 is required by US Energy Star and involves the collection of data based on 3 different case temperatures for over at least 6000 hours. The lumen maintenance requirement is also needed. This test will provide standardised quality assurance and quality certification for lighting fixture manufacturers and LED manufacturers respectively.
SemiLEDs CEO, Trung Doan adds that S35 and P2, warm and cool white (5700K and 3000K respectively) were our the series to go through the 6000 hour tests at both 350 and 700mA.
The test result from IST showed that the lumen maintenance is 98.75% and 97.81% for 55℃and 85℃, respectively, for 3000K emitter at 700mA driving current, far above the requirements of LM-80 for domestic indoor application at 91.8% and domestic outdoor and commercial usage at 94.1%.
SemiLEDs further explains that providing high quality components to lighting fixture manufacturers is important in enabling quicker penetration of LED into the lighting market.
The S35 is SemiLEDs first series of emitters with a 35x35mm footprint utilising a silicon housing material. SemiLEDs had launched the C35 – the second generation of its 35 x 35mm emitters in June 2012. The C35 incorporates SemiLEDs EV LED chip and a ceramic base.
The thermal resistance complements SemiLEDs vertical chip on metal alloy substrate technology. Besides thermal management, SemiLEDs also implemented the latest innovation in phosphor technology, Color Precision binning, to it the C35 product family allowing customers to be in control of their CCT distribution. With the new technology, consistent colour can be produced within a single 7-step, 4step or 2-step MacAdam Ellipse centred in ANSI defined standard colour spaces.
“Working with IST for the LM-80 tests was a good choice. Being a certified test lab, IST showed its professionalism and provided all the necessary assistance for us to verify our performance. We look forward to further cooperation for new products in the pipeline,” comments Doan.
IST’s COO Jandel Lin mentions, the company’s LM-80 lab started at the end of 2011 and had already been commissioned by over 20 manufacturers to conduct the test. Lin adds that SemiLEDs’ S35 is the first case to successfully pass the test at the IST lab and the results should significantly increase SemiLEDs’ marketing competitiveness in terms of quality.
IST’s CFO and spokesperson Selina Lin also adds that at the beginning of August, IST signed a MOU with Intertek HK as the reporting body.
“LED components are sensitive to heat and most failures in lighting fixtures involves thermal mistreatment. Therefore, verifying the degradation at various temperatures is very critical,” says Kevin Tsui, VP of Reliability Engineering Department of IST.
Tsui further explains that LM-80 is required by US Energy Star and involves the collection of data based on 3 different case temperatures for over at least 6000 hours. The lumen maintenance requirement is also needed. This test will provide standardised quality assurance and quality certification for lighting fixture manufacturers and LED manufacturers respectively.
SemiLEDs CEO, Trung Doan adds that S35 and P2, warm and cool white (5700K and 3000K respectively) were our the series to go through the 6000 hour tests at both 350 and 700mA.
The test result from IST showed that the lumen maintenance is 98.75% and 97.81% for 55℃and 85℃, respectively, for 3000K emitter at 700mA driving current, far above the requirements of LM-80 for domestic indoor application at 91.8% and domestic outdoor and commercial usage at 94.1%.
SemiLEDs further explains that providing high quality components to lighting fixture manufacturers is important in enabling quicker penetration of LED into the lighting market.
The S35 is SemiLEDs first series of emitters with a 35x35mm footprint utilising a silicon housing material. SemiLEDs had launched the C35 – the second generation of its 35 x 35mm emitters in June 2012. The C35 incorporates SemiLEDs EV LED chip and a ceramic base.
The thermal resistance complements SemiLEDs vertical chip on metal alloy substrate technology. Besides thermal management, SemiLEDs also implemented the latest innovation in phosphor technology, Color Precision binning, to it the C35 product family allowing customers to be in control of their CCT distribution. With the new technology, consistent colour can be produced within a single 7-step, 4step or 2-step MacAdam Ellipse centred in ANSI defined standard colour spaces.
“Working with IST for the LM-80 tests was a good choice. Being a certified test lab, IST showed its professionalism and provided all the necessary assistance for us to verify our performance. We look forward to further cooperation for new products in the pipeline,” comments Doan.
IST’s COO Jandel Lin mentions, the company’s LM-80 lab started at the end of 2011 and had already been commissioned by over 20 manufacturers to conduct the test. Lin adds that SemiLEDs’ S35 is the first case to successfully pass the test at the IST lab and the results should significantly increase SemiLEDs’ marketing competitiveness in terms of quality.
IST’s CFO and spokesperson Selina Lin also adds that at the beginning of August, IST signed a MOU with Intertek HK as the reporting body.
