Illumination
LUXEON 2835 with
FreshFocus Technology™
Accentuating freshness and overall visual
appeal, making food irresistible
LUXEON 2835 with FreshFocus Technology creates impactful lighting by
accentuating the freshness and overall visual appeal of a variety of fresh
food in supermarkets, delis, butcher shops and bakeries. LUXEON 2835
with FreshFocus Technology brings out reds for greater visual appeal
to meat; increases the appetite appeal of bread and pastries; exhibits
the most natural and attractive fish; and emphasizes the “just picked”
appearance for produce (fruits and vegetables) using a common 2835
platform.
Features and Benefits
Primary Applications
Spectrum engineered products with focused color points to enable
the right lighting for specific merchandise and application
Downlights
Industry standard footprint for drop-in replacement designs
Indoor Area Lighting
Maximum drive current of up to 240mA allows for reduction of LED count
–– TLEDs
IR and UV free, which keeps the merchandise fresher longer
and prevents meat discoloration
–– Troffers
3- and 5-step MacAdam ellipse color kits available
Lamps
DS196 LUXEON 2835 with FreshFocus Technology Product Datasheet ©2017 Lumileds Holding B.V. All rights reserved.
No. E352519
Table of Contents
General Product Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Product Test Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Part Number Nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Lumen Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Environmental Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Performance Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Product Selection Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Electrical and Thermal Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Characteristic Curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Spectral Power Distribution Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Light Output Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Forward Current Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Radiation Pattern Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Product Bin and Labeling Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Decoding Product Bin Labeling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Luminous Flux Bins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Color Bin Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Forward Voltage Bins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Mechanical Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Reflow Soldering Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
JEDEC Moisture Sensitivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Solder Pad Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Packaging Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Pocket Tape Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Reel Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
DS196 LUXEON 2835 with FreshFocus Technology Product Datasheet 20170914 ©2017 Lumileds Holding B.V. All rights reserved.
i
General Product Information
Product Test Conditions
LUXEON 2835 with FreshFocus Technology™ LEDs are tested and binned with a 20ms monopulse of 120mA at a junction
temperature, Tj, of 25°C.
Part Number Nomenclature
Part numbers for LUXEON 2835 FreshFocus Line follow the convention below:
L 1 2 8 – A A 0 0 C A 3 5 0 0 0 0 0
Where:
A A –
designates product type (PR=Produce, RM=Red Meat, MM=Marbled Meat, FS=Fish, BD=Bread)
C
–
designates binning current (C=120mA)
A
–
designates voltage of the part (A=3V)
Therefore, the following part number is used for a LUXEON 2835C with FreshFocus Technology for Marbled Meat, 3V:
L 1 2 8 – M M 0 0 C A 3 5 0 0 0 0 0
Lumen Maintenance
Please contact your local Sales Representative or Lumileds Technical Solutions Manager for more information about the longterm performance of this product.
Environmental Compliance
Lumileds LLC is committed to providing environmentally friendly products to the solid-state lighting market. LUXEON 2835 with
FreshFocus Technology™ is compliant to the European Union directives on the restriction of hazardous substances in electronic
equipment, namely the RoHS Directive 2011/65/EU and REACH Regulation (EC) 1907/2006. Lumileds LLC will not intentionally add
the following restricted materials to its products: lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls (PBB)
or polybrominated diphenyl ethers (PBDE).
DS196 LUXEON 2835 with FreshFocus Technology Product Datasheet 20170914 ©2017 Lumileds Holding B.V. All rights reserved.
2
Performance Characteristics
Product Selection Guide
Table 1. Product performance of LUXEON 2835 with FreshFocus Technology at 120mA, Tj=25°C.
PRODUCT
LUXEON
2835C
VOLTAGE
3V
SPECTRUM
Luminous Flux [1, 2] (lm)
Typical Luminous
Efficacy (lm/W)
Part Number
L128-PR00CA3500000
Minimum
Typical
Produce
39
44
123
Red Meat
27
31
86
L128-RM00CA3500000
Marbled Meat
26
30
84
L128-MM00CA3500000
Fish
44
50
139
L128-FS00CA3500000
Bread
43
47
131
L128-BD00CA3500000
Notes for Table 1:
1. Lumileds maintains a tolerance of ±7.5% on luminous flux measurements.
2. Luminous flux is based upon mounted package on highly reflective surface at Tj=25°C.
Optical Characteristics
Table 2. Optical characteristics for LUXEON 2835 with FreshFocus Technology at 120mA, Tj=25°C.
Part Number
Typical Total Included Angle [1]
Typical Viewing Angle [2]
L128-xx00CA350000
160°
120°
Notes for Table 2:
1. Total angle at which 90% of total luminous flux is captured.
2. Viewing angle is the off axis angle from the LED centerline where the luminous intensity is ½ of the peak value.
DS196 LUXEON 2835 with FreshFocus Technology Product Datasheet 20170914 ©2017 Lumileds Holding B.V. All rights reserved.
3
Electrical and Thermal Characteristics
Table 3. Electrical and thermal characteristics for LUXEON 2835 with FreshFocus Technology at 120mA, Tj=25°C.
Part Number
Forward Voltage [1] (Vf)
Minimum
Typical
MAXIMUM
Typical Temperature
Coefficient of Forward
Voltage [2] (mV/°C)
2.9
3.0
3.2
-3.0 to -6.0
L128-xx00CA350000
Typical Thermal
Resistance—Junction
to Solder Pad (°C/W)
21
Notes for Table 3:
1. Lumileds maintains a tolerance of ±0.10V on forward voltage measurements.
2. Measured between 25°C and 85°C.
Absolute Maximum Ratings
Table 4. Absolute maxium ratings for LUXEON 2835 with FreshFocus Technology.
Parameter
DC Forward Current
Maximum Performance
240mA
[1, 2]
Peak Pulsed Forward Current
[1, 3]
LED Junction Temperature [1] (DC & Pulse)
300mA
125°C
ESD Sensitivity (ANSI/ESDA/JEDEC JS-001-2012)
Class 2
Operating Case Temperature [1]
-40°C to 105°C
LED Storage Temperature
-40°C to 105°C
Soldering Temperature
JEDEC 020c 260°C
Allowable Reflow Cycles
3
Reverse Voltage (Vreverse)
[4, 5]
5
Notes for Table 4:
1. Proper current derating must be observed to maintain the junction temperature below the maximum allowable junction temperature.
2. Residual periodic variations due to power conversion from alternating current (AC) to direct current (DC), also called “ripple,” are acceptable if the following conditions are met:
– The frequency of the ripple current is 100Hz or higher
– The average current for each cycle does not exceed the maximum allowable DC forward current
– The maximum amplitude of the ripple does not exceed the maximum peak pulsed forward current
3. At ≤50% duty cycle with pulse width of 5ms.
4. Transient reverse voltages and surge currents due to electrical switching or supply interruptions are acceptable if these events do not last for more than 10ms, the amplitude of the reverse
voltage does not exceed 5V and the reverse current is less than 220uA.
5. Max 5V reverse for up to 10s is an acceptable beginning of life, one time test condition.
DS196 LUXEON 2835 with FreshFocus Technology Product Datasheet 20170914 ©2017 Lumileds Holding B.V. All rights reserved.
4
Characteristic Curves
Spectral Power Distribution Characteristics
Figure 1. Typical normalized power vs. wavelength for LUXEON 2835 with FreshFocus Technology at 120mA, Tj=25°C.
Light Output Characteristics
Figure 2. Typical normalized light output vs. junction temperature for LUXEON 2835 with FreshFocus Technology at 120mA.
DS196 LUXEON 2835 with FreshFocus Technology Product Datasheet 20170914 ©2017 Lumileds Holding B.V. All rights reserved.
5
Figure 3. Typical normalized light output vs. forward current for LUXEON 2835 with FreshFocus Technology at Tj=25°C.
Forward Current Characteristics
Figure 4. Typical forward current vs. forward voltage for LUXEON 2835 with FreshFocus Technology at Tj=25°C.
DS196 LUXEON 2835 with FreshFocus Technology Product Datasheet 20170914 ©2017 Lumileds Holding B.V. All rights reserved.
6
Radiation Pattern Characteristics
Figure 5. Typical radiation pattern for LUXEON 2835 with FreshFocus Technology at 120mA, Tj=25°C.
Figure 6. Typical polar radiation pattern for LUXEON 2835 with FreshFocus Technolgy at 120mA, Tj=25°C.
DS196 LUXEON 2835 with FreshFocus Technology Product Datasheet 20170914 ©2017 Lumileds Holding B.V. All rights reserved.
7
Product Bin and Labeling Definitions
Decoding Product Bin Labeling
In the manufacturing of semiconductor products, there are variations in performance around the average values given in the
technical datasheet. For this reason, Lumileds bins LED components for luminous flux or radiometric power, color point, peak or
dominant wavelength and forward voltage.
LUXEON 2835 with FreshFocus Technology LEDs are labeled using a 4-digit alphanumeric CAT code following the format below:
A B C D
Where:
A
–
designates luminous flux bin (example: R=48 to 52 lumens, T=56 to 60 lumens)
B C –
designates correlated color bin (example: JD, JE, JF, JG, JH for Bread parts)
D
designates forward voltage bin (example: V=3.0 to 3.1V, W=3.0 to 3.1V)
–
Therefore, a LUXEON 2835 with FreshFocus Technology with a lumen range of 48 to 52, color bin of JD and a forward voltage
range of 3.0 to 3.1V has the following CAT code:
R J D W
Luminous Flux Bins
Table 5 lists the standard luminous flux bins for LUXEON 2835C with FreshFocus Technology emitters. Although several bins are
outlined, product availability in a particular bin varies by production run and by product performance. Not all bins are available in
all CCTs.
Table 5. Luminous flux bin definitions for LUXEON 2835 with FreshFocus Technology, Tj=85°C.
PRODUCT
LUXEON 2835C
Bin
Luminous Flux [1] (lm)
Minimum
Maximum
J
24
28
K
28
32
L
32
36
M
36
40
P
40
44
Q
44
48
R
48
52
S
52
56
T
56
60
Notes for Table 5:
1. Lumileds maintains a tolerance of ±7.5% on luminous flux measurements.
DS196 LUXEON 2835 with FreshFocus Technology Product Datasheet 20170914 ©2017 Lumileds Holding B.V. All rights reserved.
8
Color Bin Definition
Figure 7. 3- and 5-step MacAdam ellipse illustration for Tables 6a–6e.
Figure 8a. 1/5th color bin structure for LUXEON 2835 with FreshFocus Technology for Produce, 120mA, Tj=25°C.
Table 6a. 3- and 5-step MacAdam ellipse color bin definitions for LUXEON 2835 with FreshFocus Technology for Produce at Tj=25°C.
SPECTRUM
Produce
Color Space
CENTER POINT [1]
(cx, cy)
Major Axis,
a
Minor Axis,
b
Ellipse Rotation
Angle, Θ
Single 3-step MacAdam ellipse
(0.421, 0.372)
0.00834
0.00408
53.2°
Single 5-step MacAdam ellipse
(0.421, 0.372)
0.01390
0.00680
53.2°
Notes for Table 6a:
1. Lumileds maintains a tolerance of ±0.007 on x and y color coordinates in the CIE 1931 color space.
DS196 LUXEON 2835 with FreshFocus Technology Product Datasheet 20170914 ©2017 Lumileds Holding B.V. All rights reserved.
9
Figure 8b. 1/5th color bin structure for LUXEON 2835 with FreshFocus Technology for Red Meat, 120mA, Tj=25°C.
Table 6b. 3- and 5-step MacAdam ellipse color bin definitions for LUXEON 2835 with FreshFocus Technology for Red Meat at Tj=25°C.
Nominal CCT
Red Meat
Color Space
CENTER POINT [1]
(cx, cy)
Major Axis,
a
Minor Axis,
b
Ellipse Rotation
Angle, Θ
Single 3-step MacAdam ellipse
(0.500, 0.350)
0.00862
0.00397
49.3°
Single 5-step MacAdam ellipse
(0.500, 0.350)
0.01437
0.00662
49.3°
Notes for Table 6b:
1. Lumileds maintains a tolerance of ±0.007 on x and y color coordinates in the CIE 1931 color space.
Figure 8c. 1/5th color bin structure for LUXEON 2835 with FreshFocus Technology for Marbled Meat, 120mA, Tj=25°C.
Table 6c. 3- and 5-step MacAdam ellipse color bin definitions for LUXEON 2835 with FreshFocus Technology for Marbled Meat
at Tj=25°C.
Nominal CCT
Marbled Meat
Color Space
CENTER POINT [1]
(cx, cy)
Major Axis,
a
Minor Axis,
b
Ellipse Rotation
Angle, Θ
Single 3-step MacAdam ellipse
(0.395, 0.325)
0.00939
0.00402
53.7°
Single 5-step MacAdam ellipse
(0.395, 0.325)
0.01565
0.00670
53.7°
Notes for Table 6c:
1. Lumileds maintains a tolerance of ±0.007 on x and y color coordinates in the CIE 1931 color space.
DS196 LUXEON 2835 with FreshFocus Technology Product Datasheet 20170914 ©2017 Lumileds Holding B.V. All rights reserved.
10
Figure 8d. 1/5th color bin structure for LUXEON 2835 with FreshFocus Technology for Fish, 120mA, Tj=25°C.
Table 6d. 3- and 5-step MacAdam ellipse color bin definitions for LUXEON 2835 with FreshFocus Technology for Fish at Tj=25°C.
Nominal CCT
Fish
Color Space
CENTER POINT [1]
(cx, cy)
Major Axis,
a
Minor Axis,
b
Ellipse Rotation
Angle, Θ
Single 3-step MacAdam ellipse
(0.313, 0.323)
0.00669
0.00285
58.6°
Single 5-step MacAdam ellipse
(0.313, 0.323)
0.01115
0.00475
58.6°
Notes for Table 6d:
1. Lumileds maintains a tolerance of ±0.007 on x and y color coordinates in the CIE 1931 color space.
Figure 8e. 1/5th color bin structure for LUXEON 2835 with FreshFocus Technology for Bread, 120mA, Tj=25°C.
Table 6e. 3- and 5-step MacAdam ellipse color bin definitions for LUXEON 2835 with FreshFocus Technology for Bread at Tj=25°C.
Nominal CCT
Bread
Color Space
CENTER POINT [1]
(cx, cy)
Major Axis,
a
Minor Axis,
b
Ellipse Rotation
Angle, Θ
Single 3-step MacAdam ellipse
(0.4578, 0.4101)
0.00810
0.00420
53.7°
Single 5-step MacAdam ellipse
(0.4578, 0.4101)
0.01350
0.00700
53.7°
Notes for Table 6e:
1. Lumileds maintains a tolerance of ±0.007 on x and y color coordinates in the CIE 1931 color space.
DS196 LUXEON 2835 with FreshFocus Technology Product Datasheet 20170914 ©2017 Lumileds Holding B.V. All rights reserved.
11
Forward Voltage Bins
Table 7. Forward voltage bin definitions for LUXEON 2835 with FreshFocus Technology at 120mA, Tj=25°C.
PRODUCT
Bin
LUXEON 2835C
Forward Voltage [1] (Vf)
Minimum
Maximum
V
2.9
3.0
W
3.0
3.1
X
3.1
3.2
Y
3.2
3.3
Notes for Table 7:
1. Lumileds maintains a tolerance of ±0.10V on forward voltage measurements.
Mechanical Dimensions
Figure 9. Mechanical dimensions for LUXEON 2835 with FreshFocus Technology.
Notes for Figure 9:
1. Drawings are not to scale.
2. All dimensions are in millimeters.
DS196 LUXEON 2835 with FreshFocus Technology Product Datasheet 20170914 ©2017 Lumileds Holding B.V. All rights reserved.
12
Reflow Soldering Guidelines
tp
Tp
Critical Zone
TL to Tp
Ramp-up
TL
Temperature
tL
Tsmax
Tsmin
Ramp-down
ts
Preheat Area
25
Time 25ºC to Peak
JEDEC J-STD-020D
Time
Figure 10. Visualization of the acceptable reflow temperature profile as specified in Table 8.
Table 8. Reflow profile characteristics for LUXEON 2835 with FreshFocus Technology.
PROFILE FEATURE
Lead-Free Assembly
Preheat Minimum Temperature (Tsmin)
150°C
Preheat Maximum Temperature (Tsmax)
200°C
Preheat Time (tsmin to tsmax)
60 to 120 seconds
Ramp-Up Rate (TL to Tp)
3°C / second maximum
Liquidus Temperature (TL)
217°C
Time Maintained Above Temperature TL (tL)
60 to 150 seconds
Peak / Classification Temperature (Tp)
260°C
Time Within 5°C of Actual Temperature (tp)
20 to 40 seconds
Ramp-Down Rate (Tp to TL)
6°C / second maximum
Time 25°C to Peak Temperature
8 minutes maximum
JEDEC Moisture Sensitivity
Table 9. Moisture sensitivity levels for LUXEON 2835 with FreshFocus Technology.
level
3
Floor Life
Soak Requirements Standard
TIme
Conditions
Time
Conditions
168 Hours
≤30°C / 30% RH
192 Hours +5 / -0
30°C / 60% RH
DS196 LUXEON 2835 with FreshFocus Technology Product Datasheet 20170914 ©2017 Lumileds Holding B.V. All rights reserved.
13
Solder Pad Design
Figure 11. Recommended PCB solder pad layout for LUXEON 2835 with FreshFocus Technology.
Notes for Figure 11:
1. Drawings are not to scale.
2. All dimensions are in millimeters.
Packaging Information
Pocket Tape Dimensions
Figure 12. Pocket tape dimensions for LUXEON 2835 with FreshFocus Technology.
Notes for Figure 12:
1. Drawings are not to scale.
2. All dimensions are in millimeters.
DS196 LUXEON 2835 with FreshFocus Technology Product Datasheet 20170914 ©2017 Lumileds Holding B.V. All rights reserved.
14
Reel Dimensions
8.8±0.3
Ø 3.7±0.3
Ø177.8±0.2
±0
.2
1±0.2
Ø 58.5±0.2
5.2
1±0.2
3±0.2
10.85±0.2
Ø21.7±0.3
10.8±0.3
Ø 8±0.2
Ø13.5±0.2
Figure 13. Reel dimensions for LUXEON 2835 with FreshFocus Technology.
Notes for Figure 13:
1. Drawings are not to scale.
2. All dimensions are in millimeters.
DS196 LUXEON 2835 with FreshFocus Technology Product Datasheet 20170914 ©2017 Lumileds Holding B.V. All rights reserved.
15
About Lumileds
Companies developing automotive, mobile, IoT and illumination lighting applications need a partner who can collaborate with
them to push the boundaries of light. With over 100 years of inventions and industry firsts, Lumileds is a global lighting solutions
company that helps customers around the world deliver differentiated solutions to gain and maintain a competitive edge. As the
inventor of Xenon technology, a pioneer in halogen lighting and the leader in high performance LEDs, Lumileds builds innovation,
quality and reliability into its technology, products and every customer engagement. Together with its customers, Lumileds is
making the world safer, better and more beautiful—with light.
To learn more about our lighting solutions, visit lumileds.com.
©2017 Lumileds Holding B.V. All rights reserved.
LUXEON is a registered trademark of the Lumileds
Holding B.V. in the United States and other countries.
lumileds.com
DS196 LUXEON 2835 with FreshFocus Technology
Product Datasheet 20170914
Neither Lumileds Holding B.V. nor its affiliates shall be liable for any kind of loss of data or any other damages,
direct, indirect or consequential, resulting from the use of the provided information and data. Although Lumileds
Holding B.V. and/or its affiliates have attempted to provide the most accurate information and data, the materials
and services information and data are provided “as is,” and neither Lumileds Holding B.V. nor its affiliates
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user agreement with the download or use of the provided materials, information and data. A listing of Lumileds
product/patent coverage may be accessed at lumileds.com/patents.