ARM Purification

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12 January 2015

Everlight adds chip-on-board LED series with easy assembly and color-on-demand options

Everlight Electronics Co Ltd (Taiwan’s largest LED assembly manufacturer) recently launched two new chip-on-board (COB) LED families: the XUAN series of high-power COBs and the Color Choice (Color on Demand) COB series CHI.

The high-power (36V) XUAN COB series offers the dual benefit of high efficiency and easy assembly. Covering a wide wattage range at customers’ preference from 2-50W, the MCPCB device can achieve a luminous efficiency of >130lm/W. Designed with a high-thermal-conductivity Mirror-Aluminium substrate, it can be attached to the heat-sink by holder or screws. Also, its wide driving operation range ensures high efficacy in the typical driving state. In an over-driven state, however, it can still deliver high lumen output and, with an appropriate heat-sink, also remains stable to enable an economic lighting design. Seven different designs on the XUAN LED are currently available in 1313 and 1919 dimensions with correlated color temperature (CCT) options from warm to cool (2700-6500K) and color rendering index (CRI) ratings of 82 (>80), 92 (>90) and > 97 Ra. The XUAN LEDs are best suited to LED single-light-source applications such as spotlights and downlights.

The 36V XUAN high-power COB LED. Picture: The 36V XUAN high-power COB LED.

For color on demand, the Color Choice Series CHI COBs (9-29W) are designed on a ceramic PCB package and is based on the two color temperatures 2700K and 5700K which, when thoroughly mixed, can take on every ANSI color temperature in this CCT range. All mixture points achieve >110lm/W and a CRI>80 (R9>0). The Color Choice Series directly targets indoor retail, hospitality and residential lighting applications. Offered with wattages of 9W, 19W and 29W, CHI LEDs can supplement direct luminaires and spotlights with dynamic color temperature variability and allow the seamless setting of any desired color temperature between 2700K and 5700K. The Color Choice Series’ color temperature tunability is achieved by subdividing the COB into two electrically insulated segments for warm-white 2700K and cool-white 5700K color temperatures, which can be controled/driven independently from each other. Each circuit requires a separate power supply unit or a co-channel power supply.

Picture: The Color Choice Series of fully tunable 9-29W CHI COBs, for color temperatures between 2700K and 5700K.

Everlight says that this makes the Color Choice Series suitable for elegant and simple mood lighting, adjustment to changing daylight and decorative lighting aspects in private homes, stores, hotels and bars. The CHI COBs are suited to large spotlights in retail applications or smaller directional lamps such as MR16, PAR20, PAR30 and PAR38 lamps for general lighting use.

All of Everlight’s chip-on-board LEDs have completed LM80 lumen maintenance testing. A complete line of accessories such as standardized holders, appropriate reflectors and more is available in the aftermarket.

Tags: Everlight COB LEDs

Visit: www.everlight.com

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