Bright tri-colour LEDs ideal for electronic signs

13 June 2007 Opto-Electronics

Avago's new ASMT-QTB2 series of high-brightness AllnGaP and InGaN tri-colour LEDs provide high reliability, long life and very low colour degradation over time - less than 50% degradation after 50 000 hours at 25°C. They can achieve typically 1,8 cd with all RGB colours running at 20 mA and the black surface provides an excellent contrast ratio. They feature a wide viewing angle of 120°. These features allow designers to develop large indoor and outdoor electronic signs, stadium scoreboards, billboards and marquees that provide sharp and vivid images and graphics. They are made from an enhanced silicone resin material and are available in standard PLCC-4 packaging that has been specifically designed to operate in outdoor conditions.

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