Seoul Semiconductor’s new Top View LEDs have high CRI, efficacy

July 24, 2008
Seoul says that its newest LEDs have a unique combination of high efficacy and color-rendering index.
Seoul Semiconductor has introduced new Top-View LEDs with high CRI, high efficacy and high reliability.

The Warm White part (CAWT722-S) has a CRI of 96 and achieves 68 lm/W, while the Pure White (CWT722-S) has a CRI of 92 and produces 70 lm/W (see table).

However, it is important to note that these figures are for a drive current of 60 mA and a power consumption of 0.192 W. The light output of the pure white and warm white devices is only 13.9 and 13.1. lm, respectively.

Seoul's press release says that incandescent bulbs and halogen lamps have dominated the interior and display lighting market segments because of their high CRI (100). But because of their low luminous efficacy (10~15 lm/W) government authorities worldwide have passed legislation, which will go into effect over the next few years, banning the sale of these products.

The company says that with high CRI, superior lumens per watt and long life, its new top-view LEDs "are poised to dominate the lighting market segments where high-performance light sources are a must."