Smaller, brighter LEDs cut bulb cost significantly

摘要

Using silicon-carbide technology, Xlamp XB-D series LEDs lay claim to having the smallest footprint (2.5 x 2.5 mm) for a lighting-class LED. Despite the small size, the LED provides high output; it pro-duces up to 107 lm/W in warm white (3,000K) at 350 mA and a realistic oper-ating junction temperature of 85℃, ba-sically doubling the lumen-per dollar figure for LEDs, according to the manufacturer. The LEDs performance is such that designers of, say, retrofit bulbs can use fewer LEDs - as well as fewer optical elements and simpler electronics - in less space to deliver the same output as before at a lower cost, or use the same number of LEDs to boost bulb brightness.