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VLRK31..
Vishay Semiconductors
Reverse Gullwing SMD LED Red
20857
DESCRIPTION
This device has been designed to meet the increasing
demand for AlInGaP technology.
It consists of a lead frame which is embedded in a white
thermoplast. The reflector inside this package is filled up
with clear epoxy.
LED is mounted top down and emits through the PCB.
PRODUCT GROUP AND PACKAGE DATA
• Product group: LED
• Package: SMD reverse gullwing
• Product series: standard
• Angle of half intensity: ± 60°
FEATURES
• SMD LED with exceptional brightness
• Luminous intensity categorized
• Compatible with automatic placement
equipment
• EIA and ICE standard package
• Compatible with IR reflow, vapor phase
and wave solder processes according to
CECC 00802 and J-STD-020C
• Available in 12 mm tape
• Low profile package
• Non-diffused lens: Excellent for coupling to light pipes and
backlighting
• Low power consumption
• Luminous intensity ratio in one packaging
IVmax./IVmin. > 1.6
• Preconditioning according to JEDEC level 2a
unit
• ESD-withstand voltage: Up to 2 kV according to
JESD22-A114-B
• AEC-Q101 qualified
• Material categorization: For definitions of compliance
please see www.vishay.com/doc?99912
APPLICATIONS
• Automotive: Backlighting in dashboards and switches
• Telecommunication: Indicator and backlighting in
telephone and fax
• Indicator and backlight for audio and video equipment
• Indicator and backlight in office equipment
• Flat backlight for LCDs, switches, and symbols
• General use
PARTS TABLE
PART
LUMINOUS INTENSITY
WAVELENGTH
FORWARD VOLTAGE
COLOR
(mcd)
at IF
(mA)
(nm)
at IF
(mA)
(V)
at IF
(mA)
TECHNOLOGY
MIN. TYP. MAX.
MIN. TYP. MAX.
MIN. TYP. MAX.
VLRK31R1S2-GS08 Red 112 - 285 20 620 630 635 20 - 2.1 2.3 20 AlInGaP on GaAs
VLRK31R1S2-GS18 Red 112 - 285 20 620 630 635 20 - 2.1 2.3 20 AlInGaP on GaAs
VLRK31Q1R2-GS08 Red
71
- 180 20 620 630 635 20 - 2.1 2.3 20 AlInGaP on GaAs
VLRK31Q1R2-GS18 Red
71
- 180 20 620 630 635 20 - 2.1 2.3 20 AlInGaP on GaAs
VLRK31R1R2-GS08 Red 112 - 180 20 620 630 635 20 - 2.1 2.3 20 AlInGaP on GaAs
VLRK31R1R2-GS18 Red 112 - 180 20 620 630 635 20 - 2.1 2.3 20 AlInGaP on GaAs
VLRK31Q2R1-GS08 Red
90
- 140 20 620 630 635 20 - 2.1 2.3 20 AlInGaP on GaAs
VLRK31Q2R1-GS18 Red
90
- 140 20 620 630 635 20 - 2.1 2.3 20 AlInGaP on GaAs
Rev. 1.4, 22-May-13
1 Document Number: 81778
For technical questions, contact: LED@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000

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VLRK31..
Vishay Semiconductors
ABSOLUTE MAXIMUM RATINGS (Tamb = 25 °C, unless otherwise specified)
VLRK31..
PARAMETER
Reverse voltage (1)
DC forward current
Surge forward current
Power dissipation
Junction temperature
Operating temperature range
Storage temperature range
Thermal resistance junction/ambient
TEST CONDITION
Tamb 85 °C
tp 10 μs
mounted on PC board (pad size > 16 mm2)
SYMBOL
VR
IF
IFSM
PV
Tj
Tamb
Tstg
RthJA
Note
(1) Driving LED in reverse direction is suitable for short term application
VALUE
5
30
1
75
+ 125
- 40 to + 100
- 40 to + 100
400
UNIT
V
mA
A
mW
°C
°C
°C
K/W
OPTICAL AND ELECTRICAL CHARACTERISTICS (Tamb = 25 °C, unless otherwise specified)
VLRE31.., YELLOW
PARAMETER
TEST CONDITION
PART
SYMBOL
MIN.
TYP.
MAX.
VLRK31R1S2 lV 112
Luminous intensity (1)
IF = 20 mA
VLRK31Q1R2
VLRK31R1R2
lV
lV
71
112
Dominant wavelength (3)
Peak wavelength
Angle of half intensity
Forward voltage (2)
IF = 20 mA
IF = 20 mA
IF = 20 mA
IF = 20 mA
VLRK31Q2R1
lV
d
p
VF
90
620
-
-
-
Reverse voltage
IR = 10 μA
VR 5
Junction capacitance
VR = 0 V, f = 1 MHz
Cj -
Notes
(1) In one packing unit IVmax./IVmin. > 1.6
(2) Forward voltages are tested at a current pulse duration of 1 ms and a tolerance of ± 0.05 V
(3) Wavelengths are tested at a current pulse duration of 25 ms and an accuracy of ± 1 nm
-
-
-
-
630
643
± 60
2.1
-
15
285
180
180
140
635
-
-
2.3
-
-
UNIT
mcd
mcd
mcd
mcd
nm
nm
deg
V
V
pF
LUMINOUS INTENSITY CLASSIFICATION
GROUP
STANDARD
LUMINOUS INTENSITY IV (mcd)
OPTIONAL
MIN.
MAX.
1 71 90
Q
2 90 112
1 112 140
R
2 140 180
1 180 224
S
2 224 285
Note
• Luminous intensity is tested at a current pulse duration of 25 ms
and an accuracy of ± 11 %.
The above type numbers represent the order groups which
include only a few brightness groups. Only one group will be
shipped on each reel (there will be no mixing of two groups on
each reel).
In order to ensure availability, single brightness groups will not
be orderable. In a similar manner for colors where wavelength
groups are measured and binned, single wavelength groups will
be shipped in any one reel.
In order to ensure availability, single wavelength groups will not
be orderable.
CROSSING TABLE
VISHAY
VLRK31R1S2
VLRK31Q1R2
VLRK31R1R2
VLRK31Q2R1
OSRAM
LST776-R1S2
LST776-Q1R2
LST776-R1R2
LST776-Q2R1
Rev. 1.4, 22-May-13
2 Document Number: 81778
For technical questions, contact: LED@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000

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TYPICAL CHARACTERISTICS (Tamb = 25 °C, unless otherwise specified)
VLRK31..
Vishay Semiconductors
40
35
30
25
20
15
10
5
0
0
16615
10 20 30 40 50 60 70 80 90 100
Tamb - Ambient Temperature (°C)
Fig. 1 - Forward Current vs. Ambient Temperature
1.2
1.0
0.8
0.6
0.4
0.2
0.0
600
96 12075
620 640 660 680
λ - Wavelength (nm)
700
Fig. 4 - Relative Intensity vs. Wavelength
1000.00
100.00
tp/T = 0.01
0.02
0.05
0.1
0.2
0.5
1
10.00
0.01
16622
0.10 1.00 10.00
tp - Pulse Length (ms)
100.00
Fig. 2 - Forward Current vs. Pulse Length
100
10
1
1
95 10878
1.5 2
2.5
VF - Forward Voltage (V)
3
Fig. 5 - Forward Current vs. Forward Voltage
0° 10° 20°
30°
1.0
0.9
0.8
0.7
0.6 0.4 0.2 0
95 10319
40°
50°
60°
70°
80°
Fig. 3 - Relative Luminous Intensity vs. Angular Displacement
10
red
1
0.1
0.01
1
19113
10
IF - Forward Current (mA)
100
Fig. 6 - Relative Luminous Intensity vs. Forward Current
Rev. 1.4, 22-May-13
3 Document Number: 81778
For technical questions, contact: LED@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000

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2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
0 10 20 30 40 50 60 70 80 90 100
16618
Tamb - Ambient Temperature (°C)
Fig. 7 - Relative Luminous Intensity vs. Ambient Temperature
TAPING DIMENSIONS in millimeters
VLRK31..
Vishay Semiconductors
2.10
2.05
IF = 20 mA
2.00
1.95
1.90
Red
1.85
1.80
1.75
1.70
1.65
1.60
0
16617
10 20 30 40 50 60 70 80 90 100
Tamb - Ambient Temperature (°C)
Fig. 8 - Forward Voltage vs. Ambient Temperature
20858
Rev. 1.4, 22-May-13
4 Document Number: 81778
For technical questions, contact: LED@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000

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PACKAGE DIMENSIONS in millimeters
VLRK31..
Vishay Semiconductors
20859
Rev. 1.4, 22-May-13
5 Document Number: 81778
For technical questions, contact: LED@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000