Technical Data Sheet
1.8mm Round Subminiature Infrared LED
IR42-21C/TR8
Features
․Compatible
with infrared and vapor phase reflow solder process.
․Low
forward voltage
․Good
spectral matching
to Si photodetector
․Pb
free
․The
product itself will remain within RoHS compliant version.
Descriptions
․IR42-21C/TR8
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
emitting for miniature light barrier
․Floppy
disk drive
․Optoelectronic
switch
․Smoke
detector
Device Selection Guide
LED Part No.
IR
Chip
Material
GaAlAs
Lens Color
Water clear
Everlight Electronics Co., Ltd.
Device No：DTR-042-001
http:\\www.everlight.com
Prepared date：07-20-2005
Rev 3
Page: 1 of 10
Prepared by：Jaine Tsai
IR42-21C/TR8
Package Dimensions
2
1
2
1
1 Anode
2 Cathode
Notes:
1.All dimensions are in millimeters
2.Tolerances unless dimensions
±0.1mm
Absolute Maximum Ratings (Ta=25℃)
Parameter
Continuous Forward Current
Peak Forward Current
Reverse Voltage
Operating Temperature
Storage Temperature
Soldering Temperature
Power Dissipation at(or below)
25℃Free Air Temperature
Symbol
I
F
I
FP
V
R
T
opr
T
stg
T
sol
P
d
Rating
65
1.0
5
-40 ~ +85
-40 ~ +85
260
130
Units
mA
A
V
℃
℃
℃
mW
Notes:
*1:I
FP
Conditions--Pulse Width≦100μs and Duty≦1%.
*2:Soldering time≦5 seconds.
Everlight Electronics Co., Ltd.
Device No：DTR-042-001
http:\\www.everlight.com
Prepared date：07-20-2005
Rev 3
Page: 2 of 10
Prepared by：Jaine Tsai
IR42-21C/TR8
Electro-Optical Characteristics (Ta=25℃)
Parameter
Symbol
Condition
I
F
=20mA
Radiant Intensity
Ee
λp
Δλ
I
F
=100mA
Pulse Width≦100μs ,Duty≦1%
Min.
1.0
--
--
--
--
--
--
--
Typ.
3.0
14
940
45
1.2
1.4
--
30
Max.
--
Units
mW /sr
--
--
--
1.5
V
1.8
10
--
μA
deg
nm
nm
Peak Wavelength
Spectral
Bandwidth
I
F
=20mA
I
F
=20mA
I
F
=20mA
Forward Voltage
V
F
.
I
F
=100mA
Pulse Width≦100μs ,Duty≦1%
Reverse Current
View Angle
I
R
2θ1/2
V
R
=5V
I
F
=20mA
Everlight Electronics Co., Ltd.
Device No：DTR-042-001
http:\\www.everlight.com
Prepared date：07-20-2005
Rev 3
Page: 3 of 10
Prepared by：Jaine Tsai
IR42-21C/TR8
Typical Electro-Optical Characteristics Curves
Fig.1 Forward Current vs.
Ambient Temperature
Fig.2 Spectral Distributio
n
140
120
100
80
60
40
20
0
100
80
60
40
20
0
I
F
=20mA
Ta=25° C
-40 -20 0
20
40
60
80
100
Fig.3 Peak Emission Wavelength
Ambient Temperature
980
960
Fig.4 Forward Current
vs. Forward Voltage
4
10
3
10
940
920
2
10
900
-25
0
25
50
75
100
1
10
0
1
2
3
4
Everlight Electronics Co., Ltd.
Device No：DTR-042-001
http:\\www.everlight.com
Prepared date：07-20-2005
Rev 3
Page: 4 of 10
Prepared by：Jaine Tsai
IR42-21C/TR8
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
10
40
50
60
70
80
0.6 0.4 0.2
0
0.2 0.4 0.6
0.9
0.8
0.7
0
10
0
10
1
10
2
10
3
10
4
I
F
-Forward Current (mA
)
Fig.7 Relative Intensity vs.
Ambient Temperature(°C)
Fig.8 Forward Current vs.
Ambient Temperature(°C)
5
1.3
3
1.2
I
F
=20mA
I
F
=20mA
1
1.1
0
25
50
75
100
120
1
25
50
75
100
120
Everlight Electronics Co., Ltd.
Device No：DTR-042-001
http:\\www.everlight.com
Prepared date：07-20-2005
Rev 3
Page: 5 of 10
Prepared by：Jaine Tsai
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