Products, Materials & Tools | Feb 05, 2015

New Duris S 8 LEDs With Even Better Color Rendering and Good Color Consistency

Osram Opto Semiconductors presents two new members of its Duris LED family with a very good color rendering. The CRI (color rendering index) of the Duris S 8 GW P9LM32.CM and GW P9LR31.CM is at 95 (typ.) respectively 90 (min.). Due to same footprint and design the different versions can be replaced easily. The thermal resistance and the forward voltage of the new products are lower than its predecessors. The LEDs are binned at 100° C, so their brightness and color values can accurately be determined with regard to their later use.
Technical data Duris S 8
GW P9LM32.CMGW P9LR31.CM
Package 5.89 mm x
5.2 mm
5.89 mm x
5.2 mm
Viewing angle 120° 120°
Luminous efficacy (at 3,000 K and 20 mA,
TJ = 100° C)
78 lm/W 75 lm/W
Color temperature (CCT) 2,700 – 4,000 K 2,700 – 4,000 K
Typ. forward voltage 19.0 V @ 200 mA 25.8 V @ 200 mA
Color rendering (CRI) typ. 95, min. 90 typ. 95, min. 90

The new Duris S 8 with CRI 90 are the next step in the Duris S series regarding increasingly better color rendering. The very good color consistency (color binning) is achieved through the close grouping of the multi-chip LEDs, which corresponds to the coverage of a 5-step MacAdam ellipse. 3-step MacAdam grouping is additionally available. As its predecessors, the products are grouped at the junction temperature of 100° C instead of at room temperature. Another positive characteristic is the improved thermal conductivity.

The footprint (5.89 mm x 5.2 mm) of the new high-power LEDs exactly corresponds to the existing Duris S 8 versions as well as the viewing angle of 120°. The optics are also compatible to the predecessors so the different versions can be replaced easily. The correlated color temperatures (CCTs) can be chosen between 2,700 and 4,000 Kelvin. With the new Duris LEDs single light source design can be implemented. This avoids multiple shadow effects and simplifies lens and PCB (printed circuit board) design.

The new Duris S 8 can be inserted in retrofits and fixtures for accent and effect lighting in shops and museums. The certification process for the high lifetime standard of LM-80 with 6,000 hour tests for both new LEDs is done and the results are already available.

For more information on the new Osram Duris S 8 see the product catalog.

About Osram Opto Semiconductors:
Osram, with its headquarters in Munich, is one of the two leading lighting manufacturers in the world. Its subsidiary, Osram Opto Semiconductors GmbH in Regensburg (Germany), offers its customers solutions based on semiconductor technology for lighting, sensor and visualization applications. Osram Opto Semiconductors has production sites in Regensburg (Germany), Penang (Malaysia) and Wuxi (China). Its headquarters for North America is in Sunnyvale (USA). Its headquarters for the Asia region is in Hong Kong. Osram Opto Semiconductors also has sales offices throughout the world. For more information go to www.osram-os.com.

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