Issue B.2 07/08
Page 1 of 14
OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible.
OPTEK Technology Inc. — 1645 Wallace Drive, Carrollton, Texas 75006
Phone: (972) 323-2200 or (800) 341-4747 FAX: (972) 323-2396 visibleLED@optekinc.com www.optekinc.com
Lednium Series Optimal X
(10-watts,120° Viewing Angle)
OVTL09LG3x Series
• Revolutionary 3-dimensional packaged LED source
• Robust energy-efficient design with long operating life
• Low thermal resistance (2.5°C/W)
• Exceptional spatial uniformity
• Available in amber, blue, cyan, green, red, cool white,
daylight white, warm white and multi-colored
The OVTL09LG3x Series surface mount provides a 10-Watt energy-efficient 3-dimensional packaged LED
source that offers high luminance, low thermal resistance @ 2.5°C/W and a long operating lifespan. A 120°
viewing angle and three color options of white (cool, daylight, warm) make the Optimal X highly suitable for
general illumination and specialized lighting applications.
Applications
• Automotive exterior and interior lighting
• Architectural lighting
• Electronic signs and signals
• Task lighting
• General illumination
DO NOT LOOK DIRECTLY
AT LED WITH UNSHIELDED
EYES OR D AMAGE TO
RETINA MAY OCCUR.
RoHS Moisture
Flux Characteristics (IF = 1.05 A, TJ = 25° C)
Part Number Viewing An-
gle Emitted Color Typical Luminous
Flux (lm) Lens Color
OVTL09LG3A
120°
Amber 305
Water Clear
OVTL09LG3B Blue 105
OVTL09LG3G Green 522
OVTL09LG3R Red 400
OVTL09LG3W Cool White 565
OVTL09LG3WD Daylight White 522
OVTL09LG3WW Warm White 435
OVTL09LG3M Red/Green/Blue 300
OVTL09LG3C Cyan 348
Issue B.2 07/08
Page 2 of 14
OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible.
OPTEK Technology Inc. — 1645 Wallace Drive, Carrollton, Texas 75006
Phone: (972) 323-2200 or (800) 341-4747 FAX: (972) 323-2396 visibleLED@optekinc.com www.optekinc.com
Lednium Series Optimal X
OVTL09LG3x Series
Package Drawing:
Issue B.2 07/08
Page 3 of 14
OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible.
OPTEK Technology Inc. — 1645 Wallace Drive, Carrollton, Texas 75006
Phone: (972) 323-2200 or (800) 341-4747 FAX: (972) 323-2396 visibleLED@optekinc.com www.optekinc.com
Absolute Maximum Ratings
Electrical Characteristics (IF = 1.05 A, TJ = 25° C)
SYMBOL PARAMETER MIN TYP MAX UNITS
VF
Forward Voltage (Amber) 5.7 6.9 7.8 V
Forward Voltage (Blue) 8.7 10.2 11.1 V
Forward Voltage (Green & Cyan) 9.6 10.8 12.0 V
Forward Voltage (Red) 5.7 6.9 7.8 V
Forward Voltage (White) 8.7 10.2 11.1 V
VF Temperature Co-efficient (Amber, Red) ---- -6.0 ---- mV/°C
VF Temperature Co-efficient (White, Blue) ---- -4.8 ---- mV/°C
VF Temperature Co-efficient (Green & Cyan) ---- -5.0 ---- mV/°C
2 Θ½ 50% Power Angle ---- 120 ---- deg
Forward Voltage (Red/Green/Blue) 8.5 9.2 9.9 V
DC Forward Current 1.05 A
Peak Pulsed Forward Current1 3 A
Reverse Voltage 15 V
Maximum Allowable Junction Temperature2 130° C
Storage and Operating Temperature -50° ~ +85 ° C
Notes:
1. Pulse width 1 ms maximum, duty cycle 1/16.
2. Thermal resistance junction to board (TJB) is 2.5° C/W.
Optical Characteristics (IF = 1.05 A, TJ = 25° C)
COLOR DOMINANT WAVELENGTH SPECTRAL FULL-WIDTH-
HALF-MAXIMUM DOMINANT WAVELENGTH
TEMPERATURE DEPENDENCE
MIN TYP MAX
Amber 590 595 600 16 nm 0.08 nm/° C
Blue 455 460 465 24 nm 0.05 nm/° C
Green 510 515 520 40 nm 0.04 nm/° C
Red 620 625 630 18 nm 0.05 nm/° C
Cyan 500 505 510 37nm 0.04 nm/° C
Lednium Series Optimal X
OVTL09LG3x Series
Color Minimum CCT (°K) Maximum CCT (°K) Chromaticity Coordinates
Cool White 6400 7600
Cx .298 .304 .316 .313
Cy .314 .297 .318 .340
Daylight White 5200 6400
Cx .313 .317 .336 .338
Cy .341 .313 .345 .382
Warm White 3200 3800
Cx .388 .403 .440 .419
Cy .375 .424 .440 .391
Issue B.2 07/08
Page 4 of 14
OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible.
OPTEK Technology Inc. — 1645 Wallace Drive, Carrollton, Texas 75006
Phone: (972) 323-2200 or (800) 341-4747 FAX: (972) 323-2396 visibleLED@optekinc.com www.optekinc.com
450
500
V3 V4
G1
G2
550 G2V3 G2V4
G1V3 G1V4
Lednium Series Optimal X
OVTL09LG3 Series
Standard Bins
Lamps are sorted to luminous flux (Φ) and forward voltage (VF) bins shown. Orders may be filled with any or all bins
contained as below.
Important Notes:
1. All ranks will be included per delivery, rank ratio will be based on the chip distribution.
2. To designate forward voltage and luminous flux ranks, please contact OPTEK.
Dominant Wavelength 455-465nm
OVTL09LG3A (AMBER) (IF = 1.05A)
Dominant Wavelength 590-600nm
Luminous flux (lm)
Forward Voltage (VF)
200
V1 V2
A2V1 A2V2
A1V1 A1V2 A1
275
7.0 8.0
6.0
OVTL09LG3B (BLUE) (IF = 1.05A)
Luminous flux (lm)
Forward Voltage (VF)
9.5
90
110
V3 V4
B1
B2
10.5 11.5
130 B2V3
B1V3 B1V4
B2V4
OVTL09LG3G (GREEN) (IF = 1.05 mA)
Dominant Wavelength 510-520nm
Luminous flux (lm)
9.5 11.5
10.5
Forward Voltage (VF)
350 A2
OVTL09LG3C (CYAN) (IF = 1.05A)
Dominant Wavelength 500-510nm
Luminous flux (lm)
Forward Voltage (VF)
300
350
V3 V4
T1
T2
9.5 11.5
400
10.5
T2V3
T1V3 T1V4
T2V4
Issue B.2 07/08
Page 5 of 14
OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible.
OPTEK Technology Inc. — 1645 Wallace Drive, Carrollton, Texas 75006
Phone: (972) 323-2200 or (800) 341-4747 FAX: (972) 323-2396 visibleLED@optekinc.com www.optekinc.com
Lednium Series Optimal X
OVTL09LG3 Series
OVTL09LG3R (RED) (IF = 1.05A)
Dominant Wavelength 620-630nm
Luminous flux (lm)
Forward Voltage (VF)
350
V1 V2
R1
Standard Bins
Lamps are sorted to luminous flux (Φ) and forward voltage (VF) bins shown. Orders may be filled with any or all bins
contained as below.
OVTL09LG3W (COOL WHITE) (IF = 1.05A)
Typical CCT 7000°K (±600°K)
OVTL09LG3WD (DAYLIGHT WHITE) (IF = 1.05 A)
Typical CCT 5800°K (±600°K)
400
7.0 8.0
6.0
R2V1 R2V2
R1V1 R1V2
450 R2
Luminous flux (lm)
V3 V4
C2V3 C2V4
C1V3 C1V4 C1
C2
Forward Voltage (VF)
9.5 10.5 11.5
500
550
600
Luminous flux (lm)
V3 V4
D1
Forward Voltage (VF)
10.5 11.5
9.5
D2V3 D2V4
D1V3 D1V4
500
550
600 D2
OVTL01LGAWW and OVTL01L GAWWS (WARM WHITE) (IF = 350 mA)
Typical CCT 3500°K (±300°K)
Luminous flux (lm)
V3 V4
W2V3 W2V4
W1V3 W1V4 W1
W2
Forward Voltage (VF)
9.5 10.5
11.5
400
450
500
Issue B.2 07/08
Page 6 of 14
OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible.
OPTEK Technology Inc. — 1645 Wallace Drive, Carrollton, Texas 75006
Phone: (972) 323-2200 or (800) 341-4747 FAX: (972) 323-2396 visibleLED@optekinc.com www.optekinc.com
Lednium Series Optimal X
OVTL09LG3x Series
0.25
0.27
0.29
0.31
0.33
0.35
0.37
0.39
0.41
0.43
0.45
0.25 0.27 0.29 0.31 0.33 0.35 0.37 0.39 0.41 0.43 0.45
WW
WD
W
Color CCT
W Cool White 7000°K ± 600
WD Daylight White 5800°K ± 600
WW Warm White 3500°K ± 300
White Color Bins
Green
White
Blue
Amber
Red
Warm
Daylight
Cool
Cyan
White Color Bins
Issue B.2 07/08
Page 7 of 14
OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible.
OPTEK Technology Inc. — 1645 Wallace Drive, Carrollton, Texas 75006
Phone: (972) 323-2200 or (800) 341-4747 FAX: (972) 323-2396 visibleLED@optekinc.com www.optekinc.com
Lednium Series Optimal X
OVTL09LG3x Series
Spatial Intensity Distribution
Normalized Spectral Intensity vs Angular Displacement
Angle (degrees)
--80 -60 -40 -20 0 20 40 60 80 100
In the diagram below if each parallel group of three LEDs is a single color the luminous flux produced is a
mixture or R + G + B. To change the emission level of any group (color), and therefore the color of the mixed light,
the current passing through each group must be changed, yet the circuit current remains a constant value. The
means of doing this is to shunt current away from a group while allowing the total circuit current to remain constant.
By controlling the operating point of the three shunt transistors, the operating current of each group of LEDs
can be independently and continuously adjusted. The transistors will turn OFF (short across) each strip individually
when they are ON. The frequency for PWMs should be high to eliminate flickering (more than 20KHz preferred).
Controlling the ON time for each strip will control the average intensity of each strip in order to color-mix the RGB
Turtle.
Red PWM
Green PWM
Blue PWN
R1 - 10K
Common
3
2
1
Current
Source
R1 - 10K
R1 - 10K
MGSF1N03LT1G
MGSF1N03LT1G
MGSF1N03LT1G
1
2
3
3
1
2
3
1
2
Dimming and color mixing for OVTL09LG3M
Issue B.2 07/08
Page 8 of 14
OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible.
OPTEK Technology Inc. — 1645 Wallace Drive, Carrollton, Texas 75006
Phone: (972) 323-2200 or (800) 341-4747 FAX: (972) 323-2396 visibleLED@optekinc.com www.optekinc.com
Lednium Series Optimal X
OVTL09LG3x Series
Typical Electro-Optical Characteristics Curves
1.0
0.8
0.6
0.4
0.2
0.0
780 380 430 480 530 580 630 680 730
Wavelength (nm)
Normalized Spectral Intensity
Input Current = 350 mA, TJ = 25° C
Wavelength Characteristics
0
100
200
300
400
500
1.72.22.73.23.7
Voltage (V
F
)
Current (I
F
)
Forward Current vs. Forward Voltage
Amber Red Green/
Cyan
Blue/White
Normalized Spectral Intensity
Input Current = 350 mA, TJ = 25° C
Wavelength Characteristics
1.0
0.8
0.6
0.4
0.2
0.0
780
200 300 400 500 600 700
Wavelength (nm)
—— Cyan
1.0
0.8
0.6
0.4
0.2
0.0
Wavelength Characteristics
780
200 300 400 500 600 700
—— Daylight White
Input Current = 350 mA, TJ = 25° C
Wavelength (nm)
Normalized Spectral Intensity
Input Current = 350 mA, TJ = 25° C
Wavelength Characteristics
Wavelength (nm)
1.0
0.8
0.6
0.4
0.2
0.0
Normalized Spectral Intensity
200 300 500 400 600 700 780
—— Cool White
Wavelength (nm)
Wavelength Characteristics
Input Current = 350 mA, TJ = 25° C
780
1.0
0.8
0.6
0.4
0.2
0.0
Normalized Spectral Intensity
—— Warm White
200 300 400 500 600 700
Issue B.2 07/08
Page 9 of 14
OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible.
OPTEK Technology Inc. — 1645 Wallace Drive, Carrollton, Texas 75006
Phone: (972) 323-2200 or (800) 341-4747 FAX: (972) 323-2396 visibleLED@optekinc.com www.optekinc.com
Lednium Series Optimal X
OVTL09LG3x Series
Typical Electro-Optical Characteristics Curves
Junction Temperature °C
Normalized Luminosity
-0 20 40 60 80 100 120 140 160
Luminosity normalized to TJ = 25° C
2.0
1.6
1.2
1.0
0.4
0.0
1.8
1.4
0.8
0.2
0.6
% Normalized Luminosity at
Junction Temperature (° C)
0 25 50 75 100 125
OVTLO9LG3A 125 100 85 70 60 45
OVTLO9LG3B 107 100 95 87 75 65
OVTLO9LG3G 110 100 95 85 70 65
OVTLO9LG3R 135 100 90 75 65 50
OVTLO9LG3W 105 100 93 82 68 60
OPTEK
Part
Number
OVTLO9LG3WD 105 100 93 82 68 60
OVTLO9LG3WW 105 100 93 82 68 60
OVTL09LG3C 110 100 95 85 70 65
OVTL09LG3M 110 100 95 85 70 65
Luminosity normalized to TJ = 25° C
Red
Amber
Green
Cyan
White
Blue
WHEN MOUNTED ON:
FR4
PC BOARD
IMS SPREADER
PLATE 3x3x1 in. FIN
EXTRUSION ACTIVE
HEATSINK
USE SAFE OPERATING CURRENT OF: 200 mA 500 mA 700 mA 800 mA 1000 mA
Critical Thermal Conditions (To maintain junction temperature (TJ) at 85° C)
NOTE: Refer to OPTEK Application Note #228 on thermal management (www.optekinc.com/pdf/AppNote228.pdf).
Issue B.2 07/08
Page 10 of 14
OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible.
OPTEK Technology Inc. — 1645 Wallace Drive, Carrollton, Texas 75006
Phone: (972) 323-2200 or (800) 341-4747 FAX: (972) 323-2396 visibleLED@optekinc.com www.optekinc.com
OPTEK 10-watt Lednium Markings
Θ
Cathode
OVTL09LG3X
Date Code-Batch Number
MALAYSIA
FRONT BACK
Packaging: 25 pieces per tray
OPTEK’s Lednium Series Solid State Lighting products package the highest quality LED chips.
Typically, the lumen output of these chips can be as high as 70% after 50,000 hours o f opera tion. This
prediction is based on specific test results and on tests on similar materials, and relies on strict
observation of the design limits and ratings inclu ded in this data sheet.
Lednium Series Optimal X
OVTL09LG3x Series
Issue B.2 07/08
Page 11 of 14
OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible.
OPTEK Technology Inc. — 1645 Wallace Drive, Carrollton, Texas 75006
Phone: (972) 323-2200 or (800) 341-4747 FAX: (972) 323-2396 visibleLED@optekinc.com www.optekinc.com
Lednium Series Optimal X
OVTL09LG3x Series
Thermal Resistance
Optek Lednium Series 1-watt Cup – Measured value 2oC/w (OVTL01LGAxx)
Optek Lednium Series 10-watt Matrix – Measured value 2.5oC/w (OVTL09LG3xx)
Theory
In line with industry practice, the thermal resistance (Rth) of our LED packages is stated as Rθ j-b, thermal
resistance from the junction region ( j ) of the die, to the board (b) - PCB or other mounting surface. What this
means in a practical sense, is that when operating at rated input (1watt approx.) the junction of a die in a cup prod-
uct will attain a temperature that is 2oC higher than a reference point on the mounting surface beneath it. In the
case of a 10-watt Matrix product, the maximum temperature difference between any junction and the reference
point is 25oC (2.5oC/w x 10w). The thermal path thus quantified is a composite of a number of thermally resistive
elements in a series and or parallel configuration, but lumped together into a single parameter for convenience.
For an end user of LED products then, this constant allows the junction temperature to be determined by a
simple measurement of the temperature of the mounting surface. Optek recommends that the design value of sus-
tained die junction temperature be limited to 80oC. In an ambient temperature of 25oC, the board temperature of a
10-watt device must be constrained below 55oC to comply with this recommendation, and for a 1-watt cup the board
can theoretically operate at up to 78oC.
From the diagram above it can be seen that the heat generated in the junction region follows a somewhat
serial conductive path through the package to the major radiating surface – which in this example is a single sided
PCB. Some additional radiation may occur directly from the upper surface of the package (not shown). This would
be conducted upward from the die surface through the transparent encapsulating material to the package surface
and be radiated from there. To all practical purposes this is a very minor effect. The polymer encapsulants in normal
use are poor conductors of heat.
Issue B.2 07/08
Page 12 of 14
OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible.
OPTEK Technology Inc. — 1645 Wallace Drive, Carrollton, Texas 75006
Phone: (972) 323-2200 or (800) 341-4747 FAX: (972) 323-2396 visibleLED@optekinc.com www.optekinc.com
Lednium Series Optimal X
OVTL09LG3x Series
Typical elements in the conducting path and corresponding nominal thermal conductivities are:
Elements w/mK
Epilayers GaN/InGaN 150
Substrate Sapphire 50
Die attach material Conductive epoxy 10
Package Silver plated copper 350
Solder Solder (Sn/Ag/Cu) 35
Copper cladding Copper 300
Note : Thermal conductivity is a physical constant. For the materials above, the respective contribution each makes
to the overall thermal resistance (Rθ j-b) is a function of the thickness of each material layer, and the surface area.
Thermal Conductivity (TC) is defined to be the heat conducted in time (t), through thickness (T) in a direction normal
to a surface area (A), due to a temperature difference (δT).
Therefore TC= q/t x {T/[A x δT]}
and δT = [Q x T]/[A x TC] where δT = Temp. difference (K)
Q = Power (w)
A = Surface area (m2)
T = layer thickness (m)
TC = Thermal Conductivity (w/mK)
Theoretical Calculation (for 1 watt dissipated in a cup product via a single 40mil die)
GaN Thickness approx 10 x 10-6 = 1 x 10x10-6/ 10-6 x 150
Area 10-6 = 0.07 K
Substrate T = 60 x 10-6 = 1 x 60x10-6/ 10-6 x 50
= 1.2 K
Die attach T = 20 x 10-6 = 1 x 20x10-6 / 2x10-6 x 10
A = 2 x 10-6 = 1
Package T = 0.4x10-3 = 1 x 0.4x10-3/ 6x10-6 x 350
A = 6x10-6 = 0.19
Solder T = 60x10-6 = 1 x 60x10-6/6x10-6 x 25
A = 6x10-6 = 0.4
Total Calculated δT = 2.86K
Issue B.2 07/08
Page 13 of 14
OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible.
OPTEK Technology Inc. — 1645 Wallace Drive, Carrollton, Texas 75006
Phone: (972) 323-2200 or (800) 341-4747 FAX: (972) 323-2396 visibleLED@optekinc.com www.optekinc.com
Power input is 1 watt; however, some power is converted into light energy. Assuming this is of the order of
200mw, the adjusted value of δT is 2.29K. The calculation now assumes that all of the dissipation, 800mw of heat,
is conducted along the thermal path, thereby ignoring any conduction and subsequent radiation that is not direction-
ally normal to the surfaces considered, ie: conduction through the encapsulant material vertically away from the
board, and conduction horizontally away from the heat source. The calculation also assumes that there is no contri-
bution to thermal resistance at the boundaries between material layers. In practice it is improbable that perfect
transfer will occur at these transition regions, even though the bonding between layers in this example are of high
quality. In general, the calculation indicates that the measurements below are of the order of magnitude that can be
expected.
The alternate matrix product range is of a much more complicated thermal design, which does not lend it-
self to a simple theoretical calculation similar to that shown above. There are multiple incident heat sources, parallel
heat conduction paths, and significantly larger surface area for stray radiation, eg. Cup above has a surface area
available for stray radiation of approximately, 25mm2 per watt of input power. A 10-watt matrix product has approxi-
mately 92.5mm2 of exposed surface per input watt.
Measurements
The key to an accurate measurement of thermal resistance is to obtain a reliable value for the junction tem-
perature (Tj). Since the die itself is, and must be, encapsulated during testing, and the junction is contained within
the structure of the die, direct measurement of the junction temperature by normal means is not possible.
Two methods of non-contact thermography are available, both of which rely on emitted infrared detection.
Infrared imagery by calibrated radiograph is a possibility; however, in the instance of a cup product only a
small value of δT is expected which makes accurate estimation of the actual temperature gradient difficult using col-
orimetry.
The alternative measurement type is digital infrared thermography. This means there is an inherent uncer-
tainty in the calculation algorithm, which sometimes gives results considered unacceptably inaccurate. In this in-
stance absolute accuracy is of secondary importance because the value to be determined is a temperature differ-
ence (δT) which requires only relative values – any error in a first reading will also be present in subsequent read-
ings that are about the same value. The difference between readings is accurate.
The other significant drawback to infrared thermometers is a limitation to minimizing the spot size over
which the measurement is made. This poses a difficulty for small assemblies like an LED cup, and in particular the
added complication that the calculated temperature is an average value for the area being interrogated further com-
plicates the issue. Another concern is sometimes raised about the ability of this type of instrument to detect a
heated surface beyond the closest transparent radiating surface. This is a significant issue for far field measure-
ments; however, it is simple to demonstrate that this does not hold true for the near field, and particularly when the
incident beam has a known focal length.
Lednium Series Optimal X
OVTL09LG3x Series
Issue B.2 07/08
Page 14 of 14
OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible.
OPTEK Technology Inc. — 1645 Wallace Drive, Carrollton, Texas 75006
Phone: (972) 323-2200 or (800) 341-4747 FAX: (972) 323-2396 visibleLED@optekinc.com www.optekinc.com
Lednium Series Optimal X
OVTL09LG3x Series
Measurement
Instrument: IR Thermometer
Auto ranging: -100 to 1200oC
Spot size 3mm D.
Focus 25.4mm
Optimal I Product
Input 350mA at 3.3V(1watt)
Averaged Test Results
Tj Tb δT Rth
32 30.2 1.8 1.8oC/W
Optimal X Product
Input 1050mA at 10.2V(10.7watts)
Averaged Test Results
Tj Tb δT Rth
89 62 27 2.52°C/W
