Everlight Electronics Co. Ltd. (Taipei, Taiwan) has expanded its high performance JU series of chip-on-board (COB) LEDs to include 7, 10 and 15 W types in addition to the existing 4W version. The JU series now consists of four JU1215 (15×12×1.6mm) and one JU2024 (20×24×1.6mm) type/s with powers ranging from 4 watts to 15 watts. All types provide an efficacy of 110lm/W or more at 3000K CCT, a CRI of >80Ra and 25° C substrate temperature, and are available in versions ranging from ANSI bin 2,700 K to 6,500 K.

The JU series also offers 3 step (McAdam) options for advanced utilization. JU COB LEDs are multi-chip solutions that are directly applied to the board without housing, for efficient thermal dissipation. Their ceramic substrate base allows for thermal resistances of below 2°C/W, with the largest wattage COB measuring around 0.8C°/W. Low thermal resistance and superior heat dissipation ensure high reliability and increase the LEDs’ service life.

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This article first appeared in the May, 2014 issue of Lighting Technology Magazine.

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