Technical Data Sheet
.9mm Round Subminiature “Z-Bend” Lead Infrared LED
SIR91-21C
Features
․Good
spectral matching
to Si photodetector
․Low
forward voltage
․Peak
wavelength
λp=875nm
․Package
in 12mm tape on 7” diameter reel
․Pb
free
․The
product itself will remain within RoHS compliant version.
Descriptions
․SIR91-21C
is an infrared emitting diode in miniature
SMD package which is molded in a water clear plastic with
spherical top view lens. The device is spectrally matched
with silicon photodiode and phototransistor.
Applications
․PCB
mounted infrared sensor
․Infrared
remote control units with high power requirement
․Scanner
․Infrared
applied system
Device Selection Guide
LED Part No.
SIR
Chip
Material
GaAlAs
Lens Color
Water clear
Everlight Electronics Co., Ltd.
Device No：DTS-091-002
http:\\www.everlight.com
Prepared date：15-Aug-2007
Rev 2
Page: 1 of 10
Prepared by：Libin
SIR91-21C
Package Dimensions
Unit :mm
Notes:
1.All dimensions are in millimeters
2.Tolerances unless dimensions
±0.1mm
Everlight Electronics Co., Ltd.
Device No：DTS-091-002
http:\\www.everlight.com
Prepared date：15-Aug-2007
Rev 2
Page: 2 of 10
Prepared by：Libin
SIR91-21C
Absolute Maximum Ratings (Ta=25℃)
Parameter
Continuous Forward Current
Reverse Voltage
Operating Temperature
Storage Temperature
Soldering Temperature
Power Dissipation at(or below)
25℃Free Air Temperature
Symbol
I
F
V
R
T
opr
T
stg
T
sol
P
d
Rating
65
5
-40 ~ +85
-40 ~ +85
260
110
Units
mA
V
℃
℃
℃
mW
Notes:
* Soldering time≦5 seconds.
Electro-Optical Characteristics (Ta=25℃)
Parameter
Radiant Intensity
Peak Wavelength
Spectral
Bandwidth
Forward Voltage
Reverse Current
View Angle
Symbol
Ee
λp
Δλ
I
F
=20mA
I
F
=20mA
V
F
I
R
2θ1/2
I
F
=100mA
Pulse Width≦100μs ,Duty≦1%
Condition
I
F
=20mA
I
F
=100mA
Pulse Width≦100μs ,Duty≦1%
Min.
3.0
--
--
--
--
--
--
--
Typ.
5.0
20
875
80
1.3
1.4
--
20
Max.
--
--
--
--
1.6
1.8
10
--
Units
mW /sr
nm
nm
I
F
=20mA
V
μA
deg
V
R
=5V
I
F
=20mA
Everlight Electronics Co., Ltd.
Device No：DTS-091-002
http:\\www.everlight.com
Prepared date：15-Aug-2007
Rev 2
Page: 3 of 10
Prepared by：Libin
SIR91-21C
Typical Electro-Optical Characteristics Curves
Fig.1 Forward Current vs.
Ambient Temperature
140
120
100
80
60
40
20
0
Fig.2 Spectral Distributio
n
100
80
60
40
20
0
I
F
=20mA
Ta=25° C
-40 -20 0
20
40
60
80
100
810 835 855 875 905 925 945 965 985
Fig.3 Peak Emission Wavelength
Ambient Temperature
Fig.4 Forward Current
vs. Forward Voltage
920
4
10
900
3
10
875
860
2
10
84
0
-25
0
25
50
75
100
1
10
0
1
2
3
4
Everlight Electronics Co., Ltd.
Device No：DTS-091-002
http:\\www.everlight.com
Prepared date：15-Aug-2007
Rev 2
Page: 4 of 10
Prepared by：Libin
SIR91-21C
Typical Electro-Optical Characteristics Curves
Fig.5 Relative Intensity vs.
Forward Current
Fig.6 Relative Radiant Intensity vs.
Angular Displacement
1000
Ie-Radiant Intensity(mW/sr)
-20
-10
0
10
20
30
100
1.0
0.9
40
50
60
70
80
0.6 0.4 0.2
0
0.2 0.4 0.6
10
0.8
0.7
0
1
2
3
0
10
10
10
10
10
4
I
F
-Forward Current (mA
)
Fig.7 Relative Intensity vs.
Ambient Temperature(°C)
Fig.8 Forward Current vs.
Ambient Temperature(°C)
7
I
F
=20mA
1.4
5
1.3
I
F
=20mA
3
1.2
1
25
50
75
100
120
1.1
25
50
75
100
120
Everlight Electronics Co., Ltd.
Device No：DTS-091-002
http:\\www.everlight.com
Prepared date：15-Aug-2007
Rev 2
Page: 5 of 10
Prepared by：Libin
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