Data Sheet
HLMP-3351, HLMP-3366, HLMP-3451,
HLMP-3554, HLMP-3568
T-1¾ (5 mm) Low Profile LED Lamps
Description
The Broadcom® low profile T-1¾ package provides space
savings and is excellent for backlighting applications.
Package Dimensions
Features
Broadcom
High intensity AlInGaP material
Low profile: 5.8 mm (0.23 in.) nominal
T-1¾ diameter package
Diffused and non-diffused types
General-purpose leads
IC compatible/low current requirements
Reliable and rugged
AV02-1559EN
August 10, 2021
HLMP-3351, HLMP-3366, HLMP-3451, HLMP-3554, HLMP-3568 Data Sheet
T-1¾ (5 mm) Low Profile LED Lamps
Device Selection Guide
Color
Package Description
Viewing
Angle
(degree)
2½a
Red
T-1¾ Tinted, diffused
50
Yellow
Green
T-1¾ Tinted, non-diffused
45
T-1¾ Tinted, diffused
50
T-1¾ Tinted, diffused
Luminous Intensity Iv (mcd)
at 10 mA
Part Number
HLMP-
Min.
Max.
3351
5.4
—
3351-D00xx
2.1
—
3351-F00xx
5.4
—
3366
13.8
—
3451
3.6
—
3451-D00xx
3.6
—
50
T-1¾ Tinted, non-diffused
3554
6.7
—
3554-E00xx
6.7
—
3568
10.6
—
40
a. ½ is the off-axis angle at which the luminous intensity is half the axial luminous intensity.
Part Numbering System
H
L
M
P
-
x1
x2
x3
x4
-
x5
x6
x7
x8
Code
Description
Option
x1
Package Type
3
T-1¾ (5 mm)
x2
Color
3
Red
4
Yellow
x9
5
Green
x3 x4
Lens Option
5x
Tinted, diffused
6x
Tinted, non-diffused
x5
Minimum Intensity Bin
See Intensity Bin Limits
x6
Maximum Intensity Bin
0
Open bins (no maximum Iv bin limit)
x7
Color Bin Option
0
Full distribution
x8 x9
Packing Option
Broadcom
00
Bulk (loose forms packaging)
01
Tape and reel, crimped leads
02
Tape and reel, straight leads
R1
Tape and reel, counterclockwise
AV02-1559EN
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HLMP-3351, HLMP-3366, HLMP-3451, HLMP-3554, HLMP-3568 Data Sheet
T-1¾ (5 mm) Low Profile LED Lamps
Bin Information
Intensity Range (mcd)
Intensity Bin Limits
Color
Bin
Min.
Max.
Yellow
D
4.0
6.5
E
6.5
10.3
F
10.3
16.6
Intensity Range (mcd)
Color
Red
Bin
Min.
Max.
G
16.6
26.5
26.5
42.3
42.3
67.7
D
2.4
3.8
H
E
3.8
6.1
I
F
6.1
9.7
J
67.7
108.2
108.2
173.2
173.2
250.0
G
9.7
15.5
K
H
15.5
24.8
L
I
24.8
39.6
M
250.0
360.0
360.0
510.0
510.0
800.0
J
39.6
63.4
N
K
63.4
101.5
O
L
101.5
162.4
P
800.0
1250.0
1250.0
1800.0
M
162.4
234.6
Q
N
234.6
340.0
R
1800.0
2900.0
O
340.0
540.0
S
2900.0
4700.0
850.0
T
4700.0
7200.0
U
7200.0
11700.0
P
540.0
Q
850.0
1200.0
R
1200.0
1700.0
V
11700.0
18000.0
W
18000.0
27000.0
E
7.6
12.0
19.1
S
1700.0
2400.0
T
2400.0
3400.0
U
3400.0
4900.0
F
12.0
7100.0
G
19.1
30.7
H
30.7
49.1
V
4900.0
Green
W
7100.0
10200.0
X
10200.0
14800.0
I
49.1
78.5
78.5
125.7
Y
14800.0
21400.0
J
Z
21400.0
30900.0
K
125.7
201.1
289.0
L
201.1
M
289.0
417.0
N
417.0
680.0
O
680.0
1100.0
P
1100.0
1800.0
Q
1800.0
2700.0
R
2700.0
4300.0
S
4300.0
6800.0
T
6800.0
10800.0
U
10800.0
16000.0
V
16000.0
25000.0
W
25000.0
40000.0
Maximum tolerance for each bin limit is ± 18%.
Broadcom
AV02-1559EN
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HLMP-3351, HLMP-3366, HLMP-3451, HLMP-3554, HLMP-3568 Data Sheet
T-1¾ (5 mm) Low Profile LED Lamps
Color Categories
Color
Green
Yellow
Category
Number
Lambda (nm)
Min.
Max.
6
561.5
564.5
5
564.5
567.5
4
567.5
570.5
3
570.5
573.5
2
573.5
576.5
1
582.0
584.5
3
584.5
587.0
2
587.0
589.5
4
589.5
592.0
5
592.0
593.0
Tolerance for each bin limit is ± 0.5 nm.
Packaging Option Matrix
Packaging Option Code
Definition
00
Bulk Packaging, minimum increment 500 pieces/bag
01
Tape and Reel, crimped leads, minimum increment 1300 pieces/reel
02
Tape and Reel, straight leads, minimum increment 1300 pieces/reel
R1
Tape and Reel, crimped leads, reeled counterclockwise, anode leaves first, minimum increment
1300 pieces/reel
NOTE:
Broadcom
All categories are established for classification of products. Products may not be available in all categories. Contact
your local Broadcom representative for further clarification/information.
AV02-1559EN
4
HLMP-3351, HLMP-3366, HLMP-3451, HLMP-3554, HLMP-3568 Data Sheet
T-1¾ (5 mm) Low Profile LED Lamps
Absolute Maximum Ratings at TA = 25°C
Parameter
Red
Yellow
Green
Units
Peak Forward Current
90
60
90
mA
Average Forward Currenta
25
20
25
mA
DC Currentb
30
20
30
mA
Power Dissipationc
135
85
135
mW
Reverse Voltage (IR = 100 µA)
5
5
5
V
Operating Temperature Range
–40 to +100
–40 to +100
–20 to +100
°C
Storage Temperature Range
–40 to +100
–40 to +100
–40 to +100
°C
Wave Soldering Temperature (1.59 mm [0.063 in.] from Body)
250°C for 3 seconds
a. See Figure 4 (Red), Figure 8 (Yellow), or Figure 12 (Green) to establish pulsed operating conditions.
b. For Green Series, derate linearly from 50°C at 0.5 mA/°C. For Red and Yellow Series, derate linearly from 50°C at 0.2 mA/°C.
c. For Green Series, derate power linearly from 25°C at 1.8 mW/°C. For Red and Yellow Series, derate power linearly from 50°C at 1.6 mW/°C.
Figure 1: Relative Intensity vs. Wavelength
1
RELATIVE INTENSITY
0.9
GREEN
0.8
YELLOW
0.7
RED
0.6
0.5
0.4
0.3
0.2
0.1
0
450
500
550
600
650
700
750
WAVELENGTH - nm
Broadcom
AV02-1559EN
5
HLMP-3351, HLMP-3366, HLMP-3451, HLMP-3554, HLMP-3568 Data Sheet
T-1¾ (5 mm) Low Profile LED Lamps
Red HLMP-335x/-336x Series
Electrical/Optical Specifications at TA = 25°C
Device
HLMP-
Min.
Typ.
Max.
3351
—
50
—
3366
—
45
—
—
632
—
nm
Measurement at Peak
Dominant Wavelength
—
626
—
nm
Note b
½
Spectral Line Halfwidth
—
14
—
nm
s
Speed of Response
—
90
—
ns
C
Capacitance
—
11
—
pF
RJ-PIN
Thermal Resistance
—
260
—
°C/W
VF
Forward Voltage
—
1.9
2.4
V
IF = 10 mA
VR
Reverse Breakdown Voltage
5.0
—
—
V
IR = 100 µA
V
Luminous Efficacy
—
180
—
lm/W
Symbol
Description
2½
Including Angle Between Half Luminous
Intensity Points
PEAK
Peak Wavelength
d
Units Test Conditions
Deg.
Note a
VF = 0; f = 1 MHz
Junction to Cathode Lead
Note c
a. ½ is the off-axis angle at which the luminous intensity is half the axial luminous intensity.
b. Dominant wavelength, d, is derived from the CIE chromaticity diagram and represents the single wavelength that defines the color of the
device.
c. Radiant Intensity, Ie, in watts/steradian may be found from the equation Ie = Iv / v, where Iv is the luminous intensity in candelas and hv is
the luminous efficacy in lumens/watt.
Figure 2: Forward Current vs. Forward Voltage
Figure 3: Relative Luminous Intensity vs. Forward Current
2
25
RELATIVE LUMINOUS INTENSITY
(NORMALIZED AT 10 mA)
FORWARD CURRENT - mA
30
20
15
10
5
0
0
1
2
FORWARD VOLTAGE - V
1.5
1
0.5
3
0
0
5
10
15
20
25
30
DC FORWARD CURRENT - mA
Broadcom
AV02-1559EN
6
HLMP-3351, HLMP-3366, HLMP-3451, HLMP-3554, HLMP-3568 Data Sheet
Figure 4: Maximum Tolerable Peak Current vs. Pulse Duration
(IDC MAX as per MAX ratings)
T-1¾ (5 mm) Low Profile LED Lamps
Figure 5: Relative Luminous Intensity vs. Angular
Displacement
HLMP-3366
HLMP-3351
Yellow HLMP-345x Series
Electrical/Optical Specifications at TA = 25°C
Device
HLMP-
Min.
Typ.
Max.
3451
—
50
—
Deg.
Peak Wavelength
—
590
—
nm
Measurement at Peak
d
Dominant Wavelength
—
589
—
nm
Note b
½
Spectral Line Halfwidth
—
12
—
nm
s
Speed of Response
—
90
—
ns
C
Capacitance
—
15
—
pF
RJ-PIN
Thermal Resistance
—
260
—
°C/W
VF
Forward Voltage
—
1.9
2.4
V
IF = 10 mA
VR
Reverse Breakdown Voltage
5.0
—
—
V
IR = 100 µA
V
Luminous Efficacy
—
500
—
lm/W
Symbol
Description
2½
Including Angle Between Half Luminous
Intensity Points
PEAK
Units Test Conditions
Note a
VF = 0; f = 1 MHz
Junction to Cathode Lead
Note c
a. ½ is the off-axis angle at which the luminous intensity is half the axial luminous intensity.
b. Dominant wavelength, d, is derived from the CIE chromaticity diagram and represents the single wavelength that defines the color of the
device.
c. Radiant Intensity, Ie, in watts/steradian may be found from the equation Ie = Iv / v, where Iv is the luminous intensity in candelas and hv is
the luminous efficacy in lumens/watt.
Broadcom
AV02-1559EN
7
HLMP-3351, HLMP-3366, HLMP-3451, HLMP-3554, HLMP-3568 Data Sheet
Figure 6: Forward Current vs. Forward Voltage
T-1¾ (5 mm) Low Profile LED Lamps
Figure 7: Relative Luminous Intensity vs. Forward Current
2
RELATIVE LUMINOUS INTENSITY
(NORMALIZED AT 10 mA)
FORWARD CURRENT - mA
20
15
10
5
0
0
1
2
3
FORWARD VOLTAGE - V
Figure 8: Maximum Tolerable Peak Current vs. Pulse Duration
(IDC MAX as per MAX ratings)
1.5
1
0.5
0
0
5
10
15
20
DC FORWARD CURRENT - mA
Figure 9: Relative Luminous Intensity vs. Angular
Displacement
HLMP-3466
HLMP-3451
Broadcom
AV02-1559EN
8
HLMP-3351, HLMP-3366, HLMP-3451, HLMP-3554, HLMP-3568 Data Sheet
T-1¾ (5 mm) Low Profile LED Lamps
Green HLMP-355x/-356x Series
Electrical/Optical Specifications at TA = 25°C
Device
HLMP-
Min.
Typ.
Max.
3554
—
50
—
Deg.
Peak Wavelength
—
570
—
nm
Measurement at Peak
d
Dominant Wavelength
—
569
—
nm
Note b
½
Spectral Line Halfwidth
—
13
—
nm
s
Speed of Response
—
500
—
ns
C
Capacitance
—
18
—
pF
RJ-PIN
Thermal Resistance
—
260
—
°C/W
VF
Forward Voltage
—
2.0
2.7
V
IF = 10 mA
VR
Reverse Breakdown Voltage
5.0
—
—
V
IR = 100 µA
V
Luminous Efficacy
—
640
—
lm/W
Symbol
Description
2½
Including Angle Between Half Luminous
Intensity Points
PEAK
3568
Units Test Conditions
Note a
40
VF = 0; f = 1 MHz
Junction to Cathode Lead
Note c
a. ½ is the off-axis angle at which the luminous intensity is half the axial luminous intensity.
b. Dominant wavelength, d, is derived from the CIE chromaticity diagram and represents the single wavelength that defines the color of the
device.
c. Radiant Intensity, Ie, in watts/steradian may be found from the equation Ie = Iv / v, where Iv is the luminous intensity in candelas and hv is
the luminous efficacy in lumens/watt.
Figure 10: Forward Current vs. Forward Voltage
Figure 11: Relative Luminous Intensity vs. Forward Current
2.5
25
RELATIVE LUMINOUS INTENSITY
(NORMALIZED AT 10 mA)
FORWARD CURRENT - mA
30
20
15
10
5
0
0
1
2
FORWARD VOLTAGE - V
Broadcom
3
2
1.5
1
0.5
0
0
5
10
15
20
25
DC FORWARD CURRENT - mA
30
AV02-1559EN
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HLMP-3351, HLMP-3366, HLMP-3451, HLMP-3554, HLMP-3568 Data Sheet
Figure 12: Maximum Tolerable Peak Current vs. Pulse
Duration (IDC MAX as per MAX ratings)
T-1¾ (5 mm) Low Profile LED Lamps
Figure 13: Relative Luminous Intensity vs. Angular
Displacement
HLMP-3568
HLMP-3554
Broadcom
AV02-1559EN
10
HLMP-3351, HLMP-3366, HLMP-3451, HLMP-3554, HLMP-3568 Data Sheet
Precautions
T-1¾ (5 mm) Low Profile LED Lamps
Lead Forming
The leads of an LED lamp may be preformed or cut to
length prior to insertion and soldering on PC board.
For better control, use the proper tool to precisely form
and cut the leads to applicable length rather than doing
it manually.
If manual lead cutting is necessary, cut the leads after
the soldering process. The solder connection forms a
mechanical ground that prevents mechanical stress
due to lead cutting from traveling into LED package.
Use this method for the hand soldering operation,
because the excess lead length also acts as small heat
sink.
Soldering and Handling
Take care during the PCB assembly and soldering
process to prevent damage to the LED component.
LED component may be effectively hand soldered to
PCB. However, do this under unavoidable
circumstances, such as rework. The closest manual
soldering distance of the soldering heat source
(soldering iron’s tip) to the body is 1.59 mm. Soldering
the LED using soldering iron tip closer than 1.59 mm
might damage the LED.
1.59 mm
Wave
Solderinga, b
NOTE:
1. PCBs with different size and design (component
density) will have a different heat mass (heat capacity).
This might cause a change in temperature experienced
by the board if the same wave soldering setting is used.
Therefore, recalibrate the soldering profile again before
loading a new type of PCB.
2. Take extra precautions during wave soldering to ensure
that the maximum wave temperature does not exceed
250°C and the solder contact time does not exceed 3s.
Over-stressing the LED during the soldering process
might cause premature failure to the LED due to
delamination.
Apply ESD precautions on the soldering station and
personnel to prevent ESD damage to the LED
component that is ESD sensitive. Refer to Broadcom
application note AN 1142 for details. The soldering iron
used must have a grounded tip to ensure electrostatic
charge is properly grounded.
Recommended soldering condition.
Manual Solder Dipping
Pre-heat Temperature
105°C max.
—
Pre-heat Time
60s max.
Peak Temperature
250°C max.
260°C max.
Dwell Time
3s max.
5s max.
—
a. The preceding conditions refer to measurement with a
thermocouple mounted at the bottom of the PCB.
Set and maintain wave soldering parameters according
to the recommended temperature and dwell time.
Perform daily checks on the soldering profile to ensure
that it always conforms to the recommended soldering
conditions.
Loosely fit any alignment fixture that is being applied
during wave soldering and do not apply weight or force
on the LED. Use nonmetal material because it absorbs
less heat during the wave soldering process.
At elevated temperature, LED is more susceptible to
mechanical stress. Therefore, allow the PCB to cool
down to room temperature prior to handling, which
includes removal of alignment fixture or pallet.
If PCB board contains both through-hole (TH) LED and
other surface-mount components, solder surface-mount
components on the top side of the PCB. If the surface
mount must be on the bottom side, solder these
components using reflow soldering prior to the insertion
of the TH LED.
The recommended PC board plated through holes
(PTH) size for LED component leads follows.
LED
Component
Lead Size
Diagonal
Plated ThroughHole Diameter
Lead size (typ.) 0.45 × 0.45 mm 0.636 mm 0.98 to 1.08 mm
(0.018 × 0.018 in.) (0.025 in.) (0.039 to 0.043 in.)
Dambar shear- 0.65 mm
off area (max.) (0.026 in.)
0.919 mm
(0.036 in.)
Lead size (typ.) 0.50 × 0.50 mm 0.707 mm 1.05 to 1.15 mm
(0.020 × 0.020 in.) (0.028 in.) (0.041 to 0.045 in.)
Dambar shear- 0.70 mm
off area (max.) (0.028 in.)
0.99 mm
(0.039 in.)
b. Use only bottom pre-heaters to reduce thermal stress
experienced by LED.
Broadcom
AV02-1559EN
11
HLMP-3351, HLMP-3366, HLMP-3451, HLMP-3554, HLMP-3568 Data Sheet
NOTE:
T-1¾ (5 mm) Low Profile LED Lamps
Refer to application note AN1027 for more information on soldering LED components.
Over-sizing the PTH can lead to twisted LED after clinching. On the other hand under sizing the PTH can cause
difficulty inserting the TH LED.
Figure 14: Example of Wave Soldering Temperature Profile for TH LED
Recommended solder:
Sn63 (Leaded solder alloy)
SAC305 (Lead-free solder alloy)
LAMINAR
HOT AIR KNIFE
TURBULENT WAVE
250
Flux: Rosin flux
Solder bath temperature:
245qC ± 5 qC (maximum peak temperature = 250qC)
TEMPERATURE (qC)
200
Dwell time: 1.5s – 3.0s (maximum = 3 seconds)
150
Note: Allow for board to be sufficiently cooled to
room temperature before you exert mechanical force.
100
50
PREHEAT
0
Broadcom
10
20
30
40
50
60
TIME (SECONDS)
70
80
90
100
AV02-1559EN
12
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