news digest ♦ LEDs


State-of-the-art technology in use The latest developments in chip technology, converters, and package are the secret to the performance optimisation of the Oslon SSL. The higher temperature stability of its luminous flux, even when operating under “hot” application conditions, significantly simplifies thermal management. “This efficiency enhancement not only implies a reduction of the initial costs incurred by our customers, it also makes the development of luminaire solutions so much easier,” says Martin Wittmann, responsible marketing manager at Osram Opto.


Particularly small and bright The new Osram Oslon SSL LEDs are available in the light colour “warm white” (3,000 K), suitable for interior lighting (type EC), for instance in downlights, as well as in “cold white” (5,000 K), for use in exterior lighting (type PC).


Like the previous products of the Oslon SSL-range, the new arrivals are also available in a compact size of 3 mm x 3 mm and offer two different lenses. Thanks to the reflectivity of the package, the light that is irradiated to the side or to the back is reflected and can be used again. “Thus, this LED generation, which combines the converter and reflective package, ensures the best possible light colour homogeneity over angle,” Martin Wittmann adds.


Technical Data (at 350 mA operating current): Component size


mm


Radiation characteristic Lifetime


hours (L70/B50 at Tj=125°C) Light colours and CRI at 3,000 K at 5,000 K


70 typical


Luminous efficacy = 85°C) typical


at 3,000 K at 5,000 K


(Tj = 85°C) typical Luminous flux at 3,000 K


typical


Forward voltage typical


5,000 K


3 mm x 3 80° / 150°


> 50,000


80 minimum 96 lm/W (Tj 111 lm/W


98 lm typical


113 lm 2.9 V


Osram Opto›s product portfolio is continually being expanded by additional colour temperatures.


60 www.compoundsemiconductor.net March 2012


Epistar welcomes its first Aixtron CRIUS II-XL MOCVD system


The firm will use the system to mass produce ultra- high brightness blue and white LEDs


Aixtron’s existing Taiwanese customer Epistar, a manufacturer of optoelectronic materials and devices, has received its first CRIUS II-XL system in a 19x4-inch wafer configuration.


The CRIUS II-XL system has successfully passed the process demonstration and acceptance test. In line with its usual procedure, Epistar will now further qualify the system in mass production. The company plans to purchase more CRIUS II-XL systems, when expanding its production capacity.


Ming-Jiunn Jou, President of Epistar, comments, “Looking at this first tool, I can see that the CRIUS II-XL will make a huge difference to our productivity. Epistar has always had great confidence in Aixtron technology and, thanks to its seamless process compatibility with our earlier generation reactors, the latest CRIUS technology is set to rapidly and efficiently drive forward future capacity expansion and technology advances.”


COO of Aixtron, Bernd Schulte, adds, “With the purchase of our latest system, the CRIUS II-XL, Epistar continues to pursue its cutting- edge production and engineering innovation in epitaxial growth. The CRIUS II-XL design concept offers the largest productivity with best-in-class uniformities, which massively increases yield and directly translates into enhanced competitiveness for Epistar’s products in an ever demanding marketplace.”


Located at the Hsinchu Science-based Industrial Park in Taiwan, Epistar Corporation has for over a decade been focused on the development, manufacture and marketing of UHB LED products. Employing its proprietary MOCVD process technology, Epistar continues to successfully commercialize a full range of UHB LEDs worldwide, featuring low power consumption and long operation life.


Introduced in November 2011, the Aixtron CRIUS


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