Super Bright LED Assembly Provides Extensive Color Output Range with Optimal Thermal Performance


Integrating four 1-W LED die
into a single assembly for solid state lighting applications, TT
electronics OPTEK Technology has developed a star-shaped
red/green/blue/amber LED assembly with exceptional thermal
performance.  Designated the OV4Z Optimal IV Star Series, the
LEDs are offered in mono-color or RGBA packages and feature
a recessed die design that houses four LED chips under a 5mm
optical-grade water clear lens. The assemblies achieve an
extremely low thermal resistance of <2degreesC/W from junction
to heatsink.

"The combination of red, green, blue and amber high-brightness LEDs
provides solid state lighting designers with an extensive number of
color combinations," said Alan Bennett, vice president of sales for
OPTEK Technology. "The star-shaped assembly results in a simplified
mounting configuration, while the design of the part provides customers
with optimal luminous intensity and transfer of heat generated due to
increased current value."

The OV4Z Series devices are exceptionally bright and ideally suited
for applications including large signage; interior, exterior and
landscape architectural lighting; recreational areas such as pools,
spas and boats; and specialty lighting including vending machines,
display cases and stage lighting.

The Optimal IV Star Series assemblies feature emitted colors of blue
(455 - 460nm), green (530 - 535nm), red (620 - 630nm), amber
(585 - 595nm), and daylight white. Typical forward voltage at 350mA
ranges from 2.5V to 3.9V for the RGBA devices, and 8.6V to 13.1V
for the mono-color assemblies, while luminous flux at 350mA ranges
from 5 lm to 36 lm and 29 lm to 162 lm, depending on LED color. Viewing
angle for both the RGBA and mono-color assemblies is 60degreesC.
Maximum allowable junction temperature is 130degreesC, with an
operating temperature range of -50degreesC to +100degreesC.

The mono-color assembly is available with mounting pads, while the
RGBA assembly is available with through-hole pins or mounting pads
for surface mount electrical connections, along with six locating slots
for mounting screws. The assemblies are 0.83 inches (21mm) in
diameter on a 0.04 inch (1mm) thick star-shaped PC board.
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