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VLRK31R1R2-GS18 Datasheet, PDF (2/8 Pages) Vishay Siliconix – Reverse Gullwing SMD LED Red
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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
-
285
Luminous intensity (1)
IF = 20 mA
VLRK31Q1R2
lV
VLRK31R1R2
lV
71
-
180
112
-
180
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
-
140
620
630
635
-
643
-
-
± 60
-
-
2.1
2.3
Reverse voltage
IR = 10 μA
VR
5
-
-
Junction capacitance
VR = 0 V, f = 1 MHz
Cj
-
15
-
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
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