Data Sheet
ASMW-FWG0-Nxxx6
0.2W 2835 Surface-Mount LED
Overview
Features
The Broadcom® ASMW-FWG0 surface-mount LEDs use
InGaN chip technology with superior package design to
enable them to produce higher light output with better flux
performance. They can be driven at high current and are
able to dissipate the heat more efficiently, which results in
better performance with higher reliability.
These LEDs can operate under a wide range of
environmental conditions, making them ideal for various
applications, including fluorescent replacement, undercabinet lighting, retail display lighting, and panel lights.
To facilitate easy pick-and-place assembly, the LEDs are
packed in tape and reel. Every reel is shipped in single flux
and color bin to provide close uniformity.
Available in 3000K, 4000K and 6500K per ANSI
CRI ≥ 80
Moisture Sensitivity Level 3
High reliability with silicone encapsulation
Low package profile and large emitting area for better
uniformity in linear lighting
Applications
For lighting and luminaires
Channel letter and advertisement board backlighting
Office automation, home appliances, industrial
equipment
– Front panel backlighting
– Pushbutton backlighting
– Display backlighting
– Scanner lighting
CAUTION: This LED is ESD sensitive. Please observe appropriate precautions during handling and processing. Refer to
Application Note AN-1142 for additional details.
Broadcom
ASMW-FWG0-Nxxx6-DS102
February 10, 2021
ASMW-FWG0-Nxxx6 Data Sheet
0.2W 2835 Surface-Mount LED
Figure 1: Package Dimensions
NOTE:
1. All dimensions are in mm.
2. Tolerance is ±0.20 mm unless otherwise specified.
3. Encapsulation = silicone.
4. Terminal finish = silver plating.
5. Dimensions in brackets are for reference only.
Broadcom
ASMW-FWG0-Nxxx6-DS102
2
ASMW-FWG0-Nxxx6 Data Sheet
0.2W 2835 Surface-Mount LED
Device Selection Guide (TJ = 25°C, IF = 60 mA)
Correlated Color Temperature,
CCT (Kelvin)
Luminous
Intensity (cd)c
Luminous Flux ΦV (lm)a,b
Part Number
Typ.
Min.
Typ.
Max.
Typ.
ASMW- FWG0-NHKH6
3000
19.0
21.5
24.0
7.2
ASMW-FWG0-NJLH6
3000
20.0
24.5
26.0
8.2
ASMW- FWG0-NJLF6
4000
20.0
23.0
26.0
7.7
ASMW-FWG0-NKMF6
4000
22.0
25.5
28.0
8.5
ASMW- FWG0-NJLB6
6500
20.0
23.0
26.0
7.7
ASMW-FWG0-NKMB6
6500
22.0
25.5
28.0
8.5
ASMW-FWG0-NLNB6
6500
24.0
25.5
30.0
8.5
a. The luminous flux, ΦV, is measure at the mechanical axis of the package, and it is tested with a single current pulse condition.
b. Tolerance = ±12%.
c. For reference only.
Absolute Maximum Ratings
Parameter
ASMW-FWG0-Nxxx6
Units
DC Forward Currenta
100
mA
Peak Forward Currentb
180
mA
Power Dissipation
330
mW
Reverse Voltage
Not designed for reverse bias operation
LED Junction Temperature
125
°C
Operating Temperature Range
–40 to +100
°C
Storage Temperature Range
–40 to +100
°C
a. Derate linearly as shown in Figure 15 and Figure 16.
b. Duty factor = 10%, frequency = 1 kHz.
Optical and Electrical Characteristics (TJ = 25°C, IF = 60 mA)
Parameter
Min.
Typ.
Max.
Units
—
120
—
°
2.80
2.92
3.30
V
Reverse Current, IR at VR = 5Vc
—
—
10
µA
Color Rendering Index, CRI
80
—
—
—
RθJ-Sd
—
40
—
°C/W
Viewing Angle,
θ1/2a
Forward Voltage, VFb
Thermal Resistance,
a. θ1/2 is the off axis angle where the luminous intensity is half of the peak intensity.
b. Forward voltage tolerance is ±0.1V.
c. Indicates production final test condition only. Long term reverse bias is not recommended.
d. Thermal resistance from the LED junction to the solder point.
Broadcom
ASMW-FWG0-Nxxx6-DS102
3
ASMW-FWG0-Nxxx6 Data Sheet
0.2W 2835 Surface-Mount LED
Performance Characteristics (TJ = 25°C)
Forward Current (mA)
Relative Luminous Flux
(Normalized at 60 mA)
Luminous Flux, ΦV (lm) Forward Voltage, VF (V)
Luminous Efficiency
(lm/W)
Typ.
Typ.
Typ.
7.9
2.74
144.2
ASMW-FWG0-NHKH6
20
0.367
30
0.537
11.5
2.80
137.6
40
0.698
15.0
2.84
132.1
50
0.852
18.3
2.88
127.3
60 (Test current)
1.000
21.5
2.92
122.7
65
1.072
23.0
2.94
120.6
70
1.142
24.6
2.96
118.5
80
1.279
27.5
2.99
115.1
90
1.411
30.3
3.02
111.8
100
1.538
33.1
3.04
108.7
ASMW-FWG0-NJLF6, ASMW-FWG0-NJLB6
20
0.367
8.5
2.74
154.2
30
0.537
12.3
2.80
147.2
40
0.698
16.1
2.84
141.3
50
0.852
19.6
2.88
136.1
60 (Test current)
1.000
23.0
2.92
131.3
65
1.072
24.7
2.94
129.0
70
1.142
26.3
2.96
126.8
80
1.279
29.4
2.99
123.2
90
1.411
32.5
3.02
119.6
100
1.538
35.4
3.04
116.2
20
0.367
9.0
2.74
164.3
30
0.537
13.2
2.80
156.9
40
0.698
17.1
2.84
150.6
ASMW-FWG0-NJLH6
50
0.852
20.9
2.88
145.0
60 (Test current)
1.000
24.5
2.92
139.9
65
1.072
26.3
2.94
137.4
70
1.142
28.0
2.96
135.1
80
1.279
31.3
2.99
131.2
90
1.411
34.6
3.02
127.4
100
1.538
37.7
3.04
123.8
Broadcom
ASMW-FWG0-Nxxx6-DS102
4
ASMW-FWG0-Nxxx6 Data Sheet
Forward Current (mA)
0.2W 2835 Surface-Mount LED
Relative Luminous Flux
(Normalized at 60 mA)
Luminous Flux, ΦV (lm) Forward Voltage, VF (V)
Typ.
Luminous Efficiency
(lm/W)
Typ.
Typ.
ASMW-FWG0-NKMF6, ASMW-FWG0-NKMB6, ASMW-FWG0-NLNB6
20
0.367
9.4
2.74
171.0
30
0.537
13.7
2.80
163.3
40
0.698
17.8
2.84
156.7
50
0.852
21.7
2.88
150.9
60 (Test current)
1.000
25.5
2.92
145.6
65
1.072
27.3
2.94
143.0
70
1.142
29.1
2.96
140.6
80
1.279
32.6
2.99
136.6
90
1.411
36.0
3.02
132.6
100
1.538
39.2
3.04
128.9
Part Numbering System
A
S
M
W
–
F
W
x1
0
–
N
x2
x3
x4
Code
Description
Options
x1
Color Rendering Index
G
x2
Minimum Flux Bin
Refer to Flux Bin Limits (CAT) table.
x3
Maximum Flux Bin
x4
Color Bin
x5
Test Option
H
x5
CRI ≥ 80
3000K
F
4000K
B
6500K
6
Test current = 60 mA
Part Number Example
ASMW-FWG0-NJLH6
x 1:
G
–
CRI ≥ 80
x 2:
J
–
Minimum flux bin J
x 3:
L
–
Maximum flux bin L
x 4:
H
–
CCT 3000K with bins 8A, 8B, 8C, 8D
x 5:
6
–
Test current = 60 mA
Broadcom
ASMW-FWG0-Nxxx6-DS102
5
ASMW-FWG0-Nxxx6 Data Sheet
0.2W 2835 Surface-Mount LED
Bin Information
Flux Bin Limits (CAT)
Forward Bin Limits (VF)
Luminous Flux, ΦV (lm)
Forward Voltage, VF (V)
Bin ID
Min.
Max.
Bin ID
Min.
Max.
H
19.0
20.0
G03
2.8
2.9
J
20.0
22.0
G04
2.9
3.0
K
22.0
24.0
G05
3.0
3.1
L
24.0
26.0
G06
3.1
3.2
M
26.0
28.0
G07
3.2
3.3
N
28.0
30.0
Tolerance: ±0.1V
Tolerance: ±12%
Color Bins (BIN)
Chromacity
Coordinates
CCT
Bin ID
3000K
8A
8B
8C
8D
Chromacity
Coordinates
x
y
CCT
Bin ID
x
4000K
6A
Chromacity
Coordinates
y
CCT
Bin ID
x
y
6500K
2A
0.4147
0.3814
0.3670
0.3578
0.3048
0.3207
0.4221
0.3984
0.3702
0.3722
0.3130
0.3290
0.4342
0.4028
0.3825
0.3798
0.3144
0.3186
0.4259
0.3853
0.3783
0.3646
0.3068
0.3113
0.4221
0.3984
0.3702
0.3722
0.3028
0.3304
0.4299
0.4165
6B
0.3736
0.3874
0.3115
0.3391
0.4430
0.4212
0.3869
0.3958
0.3130
0.3290
0.4342
0.4028
0.3825
0.3798
0.3048
0.3207
0.4342
0.4028
0.3825
0.3798
0.3115
0.3391
0.4430
0.4212
0.3869
0.3958
0.3205
0.3481
0.4562
0.4260
0.4006
0.4044
0.3213
0.3373
0.4465
0.4071
0.3950
0.3875
0.3130
0.3290
6C
6D
2B
2C
0.4259
0.3853
0.3783
0.3646
0.3130
0.3290
0.4342
0.4028
0.3825
0.3798
2D
0.3213
0.3373
0.4465
0.4071
0.3950
0.3875
0.3221
0.3261
0.4373
0.3893
0.3898
0.3716
0.3144
0.3186
Tolerance: ±0.01
Example of bin information on reel and packaging label:
CAT: H
–
Flux bin H
BIN: 8A
–
Color bin 8A
VF:
G05 –
Broadcom
VF bin G05
ASMW-FWG0-Nxxx6-DS102
6
ASMW-FWG0-Nxxx6 Data Sheet
0.2W 2835 Surface-Mount LED
Figure 2: Chromaticity Diagram
0.44
0.43
3000K
0.42
8C
0.41
8B
4000K
0.40
8D
6C
8A
0.39
6B
0.38
y
6D
0.37
6A
0.36
0.35
6500K
0.34
0.33
0.32
2C
2B
2D
2A
0.31
0.30
0.29
0.31
0.33
0.35
0.37
0.39
0.41
0.43
0.45
0.47
x
Broadcom
ASMW-FWG0-Nxxx6-DS102
7
ASMW-FWG0-Nxxx6 Data Sheet
0.2W 2835 Surface-Mount LED
Figure 3: Spectral Power Distribution
Figure 4: Forward Current vs. Forward Voltage
1.0
200
0.9
FORWARD CURRENT - mA
RELATIVE INTENSITY
180
3000K
0.8
4000K
0.7
0.6
6500K
0.5
0.4
0.3
0.2
160
140
120
100
80
60
40
0.1
20
0.0
0
380
430
480
530
580
630
680
WAVELENGTH - nm
730
780
1.8
1.0
1.6
0.9
1.2
1.0
0.8
0.6
0.4
0.2
2.8
3.0
3.2
FORWARD VOLTAGE - V
3.4
3.6
-30
0
30
60
ANGULAR DISPLACEMENT - DEGREE
90
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
0.0
0
20
40
60
80
100
MONO PULSE CURRENT - mA
120
Figure 7: Chromaticity Coordinate Shift vs. Mono Pulse
Current (3000K)
-90
-60
Figure 8: Chromaticity Coordinate Shift vs. Mono Pulse
Current (4000K)
0.010
0.010
CHROMATICITY COORDINATE SHIFT
(NORMALIZED AT 60mA)
CHROMATICITY COORDINATE SHIFT
(NORMALIZED AT 60mA)
2.6
0.8
1.4
0.008
0.006
Cx
0.004
0.002
Cy
0.000
-0.002
-0.004
-0.006
-0.008
-0.010
0
20
40
60
80
100
MONO PULSE CURRENT - mA
Broadcom
2.4
Figure 6: Radiation Pattern
RELATIVE INTENSITY
RELATIVE LUMINOUS FLUX - lm
(NORMALIZED AT 60mA)
Figure 5: Relative Luminous Flux vs. Mono Pulse Current
2.2
120
0.008
0.006
0.004
0.002
0.000
-0.002
Cx
-0.004
Cy
-0.006
-0.008
-0.010
0
20
40
60
80
100
120
MONO PULSE CURRENT - mA
ASMW-FWG0-Nxxx6-DS102
8
ASMW-FWG0-Nxxx6 Data Sheet
0.2W 2835 Surface-Mount LED
Figure 9: Chromaticity Coordinate Shift vs. Mono Pulse
Current (6500K)
Figure 10: Relative Light Output vs. Junction Temperature
120
0.008
RELATIVE LIGHT OUTPUT - %
(NORMALIZED AT 25°C)
CHROMATICITY COORDINATE SHIFT
(NORMALIZED AT 60mA)
0.010
0.006
0.004
0.002
0.000
-0.002
Cx
-0.004
Cy
-0.006
-0.008
80
60
40
20
0
-0.010
0
20
40
60
80
100
MONO PULSE CURRENT - mA
-50
120
Figure 11: Forward Voltage Shift vs. Junction Temperature
0.25
0.20
0.15
0.10
0.05
0.00
-0.05
-0.10
-0.15
-25
-50
-25
0
25
50
75
100
125
0.008
0.006
0.004
0.002
0.000
-0.002
-0.004
-0.006
Cy
-0.008
-50
150
-25
JUNCTION TEMPERATURE, TJ - °C
Figure 13: Chromaticity Coordinate Shift vs. Junction
Temperature (4000K)
CHROMATICITY COORDINATE SHIFT
(NORMALIZED AT 25°C)
CHROMATICITY COORDINATE SHIFT
(NORMALIZED AT 25°C)
0.008
0.006
0.004
0.002
0.000
-0.002
-0.004
Cx
Cy
-0.008
-0.010
-25
0
25
50
75
100
125
JUNCTION TEMPERATURE, TJ - °C
150
0.010
0.008
0.006
0.004
0.002
0.000
-0.002
-0.004
-0.006
Cx
Cy
-0.008
-0.010
-50
Cx
0
25
50
75
100
125
JUNCTION TEMPERATURE, TJ - °C
Figure 14: Chromaticity Coordinate Shift vs. Junction
Temperature (6500K)
0.010
-0.006
150
0.010
-0.010
-0.20
Broadcom
0
25
50
75
100
125
JUNCTION TEMPERATURE, TJ - °C
Figure 12: Chromaticity Coordinate Shift vs. Junction
Temperature (3000K)
CHROMATICITY COORDINATE SHIFT
(NORMALIZED AT 25°C)
0.30
FORWARD VOLTAGE SHIFT - V
(NORMALIZED AT 25°C)
100
150
-50
-25
0
25
50
75
100
125
JUNCTION TEMPERATURE, TJ - °C
150
ASMW-FWG0-Nxxx6-DS102
9
ASMW-FWG0-Nxxx6 Data Sheet
0.2W 2835 Surface-Mount LED
Figure 16: Maximum Forward Current vs. Solder Point
Temperature. Derated based on TJMAX = 125°C, RθJ-S = 40°C/W
120
120
MAX ALLOWABLE DC CURRENT - mA
MAX ALLOWABLE DC CURRENT - mA
Figure 15: Maximum Forward Current vs. Ambient
Temperature. Derated based on TJMAX = 125°C
100
80
RșJ-A=100°C/W
RșJ-A=140°C/W
RșJ-A=180°C/W
60
40
20
0
0
20
40
60
80
100
120
100
80
60
40
20
0
0
AMBIENT TEMPERATURE, TA - °C
20
40
60
80
100
120
SOLDER POINT TEMPERATURE, TS - °C
Figure 17: Pulse Handling Capability at TS ≤ 100°C
D=
0.05
0.10
0.25
0.50
1.00
0.18
IP - PULSE CURRENT - A
0.16
0.14
0.12
0.10
0.08
0.06
1.0E-05
1.0E-04
1.0E-03
1.0E-02
1.0E-01
1.0E+00
1.0E+01
tp - PULSE DURATION - sec
Figure 18: Recommended Soldering Land Pattern
4.50
2.49
1.42
2.10
2.01
MAXIMIZE CATHODE COPPER
PAD AREA FOR BETTER HEAT
DISSIPATION
COPPER PAD
SOLDER MASK
NOTE:
Broadcom
All dimensions are in millimeters (mm).
ASMW-FWG0-Nxxx6-DS102
10
ASMW-FWG0-Nxxx6 Data Sheet
0.2W 2835 Surface-Mount LED
Figure 19: Carrier Tape Dimensions
P2
E1
P0
T
D0
F
W
B0
A0
P1
POLARITY
MARK
K0
USER DIRECTION OF UNREELING
F
P0
P1
3.5 ± 0.05
4.0 ± 0.1
4.0 ± 0.1
NOTE:
P2
D0
E1
2.0 ± 0.05 1.55 ± 0.05 1.75 ± 0.10
W
T
B0
K0
A0
8.0 ± 0.2
0.2 ± 0.05
3.8 ± 0.1
1.05 ± 0.1
3.1 ± 0.1
All dimensions are in millimeters (mm).
Figure 20: Reel Dimension
9.0
178.5
60.0
PRODUCT LABEL
USER FEED DIRECTION
NOTE:
Broadcom
All dimensions are in millimeters (mm).
ASMW-FWG0-Nxxx6-DS102
11
ASMW-FWG0-Nxxx6 Data Sheet
0.2W 2835 Surface-Mount LED
Precautionary Notes
Handling Precautions
Soldering
Do not perform reflow soldering more than twice.
Observe necessary precautions of handling moisturesensitive device as stated in the following section.
Do not apply any pressure or force on the LED during
reflow and after reflow when the LED is still hot.
Use reflow soldering to solder the LED. Use hand
soldering only for rework if unavoidable, but it must be
strictly controlled to following conditions:
– Soldering iron tip temperature = 315°C maximum
– Solder duration = 3 seconds maximum
– Number of cycles = 1 only
– Power of soldering iron = 50W maximum
Do not touch the LED package body with the soldering
iron except for the soldering terminals, as it may cause
damage to the LED.
Confirm beforehand whether the functionality and
performance of the LED is affected by soldering with
hand soldering.
The encapsulation material of the LED is made of silicone
for better product reliability. Compared to epoxy
encapsulant that is hard and brittle, silicone is softer and
flexible. Observe special handling precautions during
assembly of silicone encapsulated LED products. Failure to
comply might lead to damage and premature failure of the
LED. Refer to Broadcom Application Note AN5288, Silicone
Encapsulation for LED: Advantages and Handling
Precautions, for more information.
Figure 21: Recommended Lead-Free Reflow Soldering Profile
TEMPERATURE
10 to 30 SEC.
217°C
200°C
255 – 260°C
3°C/SEC. MAX.
6°C/SEC. MAX.
150°C
3°C/SEC. MAX.
100 SEC. MAX.
60 – 120 SEC.
Do not poke sharp objects into the silicone encapsulant.
Sharp objects, such as tweezers or syringes, might
apply excessive force or even pierce through the
silicone and induce failures to the LED die or wire bond.
Do not touch the silicone encapsulant. Uncontrolled
force acting on the silicone encapsulant might result in
excessive stress on the wire bond. Hold the LED only
by the body.
Do no stack assembled PCBs together. Use an
appropriate rack to hold the PCBs.
The surface of the silicone material attracts dust and
dirt easier than epoxy due to its surface tackiness. To
remove foreign particles on the surface of the silicone,
use a cotton bud with isopropyl alcohol (IPA). During
cleaning, rub the surface gently without putting much
pressure on the silicone. Ultrasonic cleaning is not
recommended.
For automated pick-and-place, Broadcom has tested a
nozzle size with OD 3.5 mm to work well with this LED.
However, due to the possibility of variations in other
parameters, such as pick-and-place machine maker/
model and other settings of the machine, verify that the
selected nozzle will not damage the LED.
Handling of Moisture-Sensitive Devices
TIME
Figure 22: Recommended Board Reflow Direction
This product has a Moisture Sensitive Level 3 rating per
JEDEC J-STD-020. Refer to Broadcom Application Note
AN5305, Handling of Moisture Sensitive Surface Mount
Devices, for additional details and a review of proper
handling procedures.
REFLOW DIRECTION
Broadcom
Before use:
– An unopened moisture barrier bag (MBB) can be
stored at < 40°C / 90% RH for 12 months. If the
actual shelf life has exceeded 12 months and the
humidity indicator card (HIC) indicates that baking is
not required, then it is safe to reflow the LEDs per
the original MSL rating.
ASMW-FWG0-Nxxx6-DS102
12
ASMW-FWG0-Nxxx6 Data Sheet
– Do not open the MBB prior to assembly (for
example, for IQC). If unavoidable, MBB must be
properly resealed with fresh desiccant and HIC. The
exposed duration must be taken in as floor life.
Control after opening the MBB:
– Read the HIC immediately upon opening of MBB.
– Keep the LEDs at < 30°C / 60% RH at all times, and
complete all high temperature-related processes,
including soldering, curing, or rework, within
168 hours.
Control for unfinished reel:
Store unused LEDs in a sealed MBB with desiccant or
desiccators at < 5% RH.
Baking is required if the following conditions exist:
– The HIC indicator indicates a change in color for
10% and 5%, as stated on the HIC.
– The LEDs are exposed to condition of > 30°C / 60%
RH at any time.
– The LED’s floor life exceeded 168 hours.
The recommended baking condition is: 60°C ±5ºC for
20 hours.
Baking should only be done once.
Storage:
The soldering terminals of these Broadcom LEDs are
silver plated. If the LEDs are exposed in ambient
environment for too long, the silver plating might be
oxidized, thus affecting its solderability performance. As
such, keep unused LEDs in a sealed MBB with
desiccant or in desiccators at < 5% RH.
Application Precautions
Control of assembled boards:
If the PCB soldered with the LEDs is to be subjected to
other high-temperature processes, store the PCB in a
sealed MBB with desiccant or desiccators at < 5% RH to
ensure that all LEDs have not exceeded their floor life of
168 hours.
0.2W 2835 Surface-Mount LED
The drive current of the LED must not exceed the
maximum allowable limit across temperature as stated
in the data sheet. Constant current driving is
recommended to ensure consistent performance.
Circuit design must cater to the whole range of forward
voltage (VF) of the LEDs to ensure the intended drive
current can always be achieved.
The LED exhibits slightly different characteristics at
different drive currents, which may result in a larger
variation of performance (meaning intensity,
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wavelength, and forward voltage). Set the application
current as close as possible to the test current to
minimize these variations.
Do not use the LED in the vicinity of material with sulfur
content or in environments of high gaseous sulfur
compounds and corrosive elements. Examples of
materials that might contain sulfur are rubber gaskets,
room-temperature vulcanizing (RTV) silicone rubber,
rubber gloves, and so on. Prolonged exposure to such
environments may affect the optical characteristics and
product life.
White LEDs must not be exposed to acidic environment
and must not be used in the vicinity of compounds that
may have acidic outgas, such as, but not limited to,
acrylate adhesive. These environments have an
adverse effect on LED performance.
Avoid rapid change in ambient temperature, especially
in high-humidity environments, because they cause
condensation on the LED.
If the LED is intended to be used in harsh or outdoor
environment, protect the LED against damages caused
by rain water, water, dust, oil, corrosive gases, external
mechanical stress, and so on.
Thermal Management
The optical, electrical and reliability characteristics of LED
are affected by temperature. Keep the junction temperature
(TJ) of the LED below the allowable limit at all times. TJ can
be calculated as follows:
TJ = TA + RθJ-A × IF × VFmax
where: TA =
Ambient temperature (°C)
RθJ-A = Thermal resistance from the LED junction
to ambient (°C/W)
IF =
Forward current (A)
VFmax = Maximum forward voltage (V)
The complication of using this formula lies in TA and RθJ-A.
Actual TA is sometimes subjective and hard to determine.
RθJ-A varies from system to system depending on design
and is usually not known.
ASMW-FWG0-Nxxx6-DS102
13
ASMW-FWG0-Nxxx6 Data Sheet
0.2W 2835 Surface-Mount LED
Another way of calculating TJ is by using the solder point
temperature, TS as follows:
TJ = TS + RθJ-S × IF × VFmax
where: TS =
LED solder point temperature as shown
in Figure 23 (°C)
RθJ-S =
Thermal resistance from the junction to
the solder point (°C/W)
IF =
Forward current (A)
Eye Safety and Precautions
LEDs may pose optical hazards when in operation. Do not
look directly at operating LEDs because it might be harmful
to the eyes. For safety reasons, use appropriate shielding or
personal protective equipment.
VFmax = Maximum forward voltage (V)
Figure 23: Solder Point Temperature on PCB
PRINTED CIRCUIT BOARD
TS POINT
LED CATHODE MARK
TS can be easily measured by mounting a thermocouple on
the soldering joint as shown in Figure 23. Verify the TS of the
LED in the final product to ensure that the LEDs are
operated within all maximum ratings stated in the data
sheet.
Broadcom
ASMW-FWG0-Nxxx6-DS102
14
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