Osram OS introduces constant temperature Oslon LED SSL with stable performance

Wednesday, 19 December 2018
by Electronio Electronio

Oslon SSL-LEDs from OSRAM Opto Semiconductors represent high lighting efficiency. The new generation of high-power LEDs will be appreciated by users for its improved efficiency, with an increase in efficiency of about 25%.

In addition, the luminous flux of the LED at elevated temperatures is now stabilized. In this way, it is possible to maintain an almost constant luminous efficiency, despite high application temperatures. Thanks to this optimization, the design of the luminaire is significantly simplified.

With the new Oslon SSL LED generation, OSRAM Opto Semiconductors presents a stable high-temperature light source. The LED provides a luminous flux of typically 98 lm in warm white (3,000 K), with an operating current of 350 mA at an on-chip application temperature of 85 °C. With its characteristic luminous efficiency of 96 lm / W, referring to the ratio of luminous flux and electrical output consumed, it is among the most efficient 1 mm²-Chip LEDs currently on the market. The combination of higher luminous flux and reduced forward voltage of 3.1V equates to an increase in efficiency of approximately 25%, compared to the previous generation. For manufacturers of lighting solutions, this makes the development of luminaires much easier: a smaller number of LEDs reaches the same luminous flux as well as the same performance as before.

State-of-the-art ladder used

The latest developments in chip technology, converters and package are the secret to optimizing the performance of Oslon SSL. The higher temperature stability of its luminous flux, even when operating under "hot" application conditions, greatly simplifies thermal management. "This efficiency improvement not only means a reduction in the initial costs borne by our customers, but also makes it easier to develop lighting solutions," says Martin Wittmann, marketing manager at OSRAM Opto Semiconductors.
Very small and bright

The new OSRAM Oslon SSL LEDs are available in the bright color "warm white" (3000 K), suitable for indoor lighting (type EC), for example in luminaires, as well as in "cold white" (5000 K), for use in outdoor lighting (PC type). As with previous products in the OSRAM Oslon SSL series, the new arrivals are available in the small 3mm x 3mm component size and offer two different lenses. Thanks to the reflectivity of the packaging, the light irradiated on the side or back is reflected and can be reused. "Thus, this LED generation, which combines the converter and the reflective package, ensures the best possible color homogeneity of light color at an angle," adds Martin Wittmann.


Technical Data (at 350 mA operating current):

Dimensions - component size 3 mm x 3 mm
Radiation characteristic - 80° / 150°
Lifetime > 50,000 hours (L70/B50 at Tj=125°C)
Light colors and CRI - 3,000 K: CRI 80 min.
- 5,000 K: CRI 70 typ.
Luminous efficacy - 3,000 K: typ. 96 lm/W (Tj = 85°C)
- 5,000 K: typ. 111 lm/W (Tj = 85°C)
Luminous flux - 3,000 K: typ. 98 lm
- 000 K: typ. 113 lm
Forward voltage typ. 2.9 V

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