Osram high-efficacy DURIS E 2835 lighting LEDs, in distribution

Osram high-efficacy DURIS E 2835 lighting LEDs, in distribution

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By Graham Prophet

The LEDs are intended for for retrofits and general indoor lighting designs in a variety of consumer and industrial applications. The LEDs come in two output versions of 0.2W (3V) and 1.0W (9V) to give designers choice of performance and cost. The 0.2W LEDs feature higher luminous efficacy, as well as lower power dissipation and lower luminous flux. The 1.0W LEDs feature higher luminous flux, lower luminous efficacy, and higher power dissipation. Both versions are housed in a compact surface-mount package and offer a 120-degree beam angle at 50% luminous intensity. The LEDs offer illumination colour options of warm white, cool white, or neutral white (2700 K to 6500 K) with a minimum colour rendering index (CRI) of 80. The LEDs can withstand up to 2 kV of electrostatic discharge (ESD) voltage according to ANSI/ESDA/JEDEC JS-001 (HBM, Class 2). The 0.2W LEDs are suitable for linear and area lighting fixtures and T8 tubes, and the 1.0W LEDs are suited for lamps and consumer downlights and fixtures.


The 0.2W LEDs feature typical luminous efficacy of 150 lm/W at 5000 K and luminous flux of 27 lm at 5000 K with forward voltage and current of 3.0V and 60 mA. By contrast, the 1.0W LEDs have lower luminous efficacy of 118 lm/W at 3000 K and higher typical luminous flux of 113 lm at 3000 K with a typical operating voltage of 9.6V and forward current of 100 mA. Both versions offer an operating temperature range of -40 to 85C and a junction temperature of 120C.






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