IR Emitter and Detector
LTE-R38381-STR-U
1. Description
Lite-On offers a broad range of discrete infrared components for application such as remote control, IR wireless data
transmission, security alarm & etc. Customers need infrared solutions featuring high power, high speed and wide viewing
angels. The product line includes GaAs 940nm IREDs, AlGaAs high speed 850nm IREDs, PIN Photodiodes and
Phototransistors. Photodiodes and Phototransistors can be provided with a filter that reduces digital light noise in the sensor
function, which enables a high signal-to-noise ratio.
1. 1. Features
High power LED light source
High performance, long life
High LED driving current
Meet ROHS, Green Product
1.2. Applications
Infrared emitter
PCB Mounted Infrared Sensor
2. Outline Dimensions
Notes :
1. All dimensions are in millimeters (inches).
2.
Tolerance is ±0.1mm (.004") unless otherwise noted.
3.
Specifications are subject to change without notice.
1/6
Part No. : LTE-R38381-STR-U
BNS-OD-FC 002/A4
IR Emitter and Detector
LTE-R38381-STR-U
3. Absolute Maximum Ratings at TA=25°
C
Parameter
Power Dissipation
Peak Forward Current(300pps, 10µs pulse)
DC Forward Current
Reverse Voltage
Thermal Resistance Junction
Operating Temperature Range
Storage Temperature Range
Infrared Soldering Condition
Maximum Rating
1.8
5
1
5
10
-40° to + 85°C
C
-55° to + 100°
C
C
260° for 10 Seconds Max.
C
Unit
W
A
A
V
K/W
4. Electrical / Optical Characteristics at TA=25°
C
Parameter
Radiant Intensity
Total Radiant Flux
Peak Emission Wavelength
Spectral Line Half-Width
Forward Voltage
Reverse Current
Rise/Fall Time
Viewing Angle
Symbol
I
E
Ф
e
λ
Peak
∆λ
V
F
I
R
Tr/Tf
2θ
1/2
Min.
-
-
-
-
-
-
-
-
Typ.
120
200
940
50
1.6
-
30
90
Max.
-
-
-
-
2.1
10
-
-
Unit
mW/sr
mW
nm
nm
V
µA
ns
deg
Test Condition
I
F
= 1A
I
F
= 1A
I
F
= 1A
I
F
= 1A
I
F
= 1A
V
R
= 5V
10%~90%
NOTE:
1.
θ
1/2
is the off-axis angle at which the luminous intensity is half the axial luminous intensity.
2. The dominant wavelength,
λd
is derived from the CIE chromaticity diagram and represents the single wavelength which defines
the color of the device.
2/6
Part No. : LTE-R38381-STR-U
BNS-OD-FC 002/A4
IR Emitter and Detector
LTE-R38381-STR-U
5. Typical Electrical / Optical Characteristics Curves
(25° Ambient Temperature Unless Otherwise Noted)
C
1.0
Relative Radiant Intensity
Forward Current IF (A)
1.2
1
0.8
0.6
0.4
0.2
0
940
Wavelength (nm)
1040
-40 -20 0
20 40 60 80 100
Ambient Temperature Ta (
o
C)
0.5
0
840
FIG.1 SPECTRAL DISTRIBUTION
1000
Output Power Relative To
Value at IF=1A
0
0.5
1.5
2.0
2.5
Forward Current (mA)
800
600
400
200
0
1.0
Forward Voltage (V)
FIG.2 FORWARD CURRENT VS.
AMBIENT TEMPERATURE
1.2
1.0
0.8
0.6
0.4
0.2
0
-20
0
20
40
60
80
Ambient Temperature Ta (
o
C)
FIG.3 FORWARD CURRENT VS.
FORWARD VOLTAGE
5.0
Output Power Relative To
Value at IF=1A
4.0
3.0
2.0
1.0
0
0
1
2
3
4
5
Relative Radiant Intensity
FIG.4 RELATIVE RADIANT INTENSITY
VS. AMBIENT TEMPERATURE
0
o
10
o
20
o
o
30
40
1.0
0.9
0.8
0.7
50
60
70
80
90
0.5 0.3
0.1
0.2 0.4 0.6
o
o
o
o
o
o
Foward Current (A)
FIG.5 RELATIVE RADIANT INTENSITY
VS. FORWARD CURRENT
FIG.6 RADIATION DIAGRAM
3/6
Part No. : LTE-R38381-STR-U
BNS-OD-FC 002/A4
IR Emitter and Detector
LTE-R38381-STR-U
6. Suggest Soldering Pad Dimensions
7. Package Dimensions Of Tape And Reel
Cathode
Note: All dimensions are in millimeters (inches).
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Part No. : LTE-R38381-STR-U
BNS-OD-FC 002/A4
IR Emitter and Detector
LTE-R38381-STR-U
Note: 1. All dimensions are in millimeters (inches).
2. Empty component pockets sealed with top cover tape.
3. 7 inch reel-600 pieces per reel.
4. The maximum number of consecutive missing parts is two.
5. In accordance with ANSI/EIA 481-1-A-1994 specifications.
8. CAUTIONS
8.1. Application
The LEDs described here are intended to be used for ordinary electronic equipment (such as office equipment, communication
equipment and household applications).Consult Liteon’s Sales in advance for information on applications in which exceptional
reliability is required, particularly when the failure or malfunction of the LEDs may directly jeopardize life or health (such as in
aviation, transportation, traffic control equipment, medical and life support systems and safety devices).
8.2. Storage
The package is sealed:
The LEDs should be stored at 30°C or less and 90%RH or less. And the LEDs are limited to use within
one year, while the LEDs is packed in moisture-proof package with the desiccants inside.
The package is opened:
The storage ambient for the LEDs should not exceed 30° temperature or 60% relative humidity.
C
It is recommended that LEDs out of their original packaging are IR-reflowed within one week hrs.
For extended storage out of their original packaging, it is recommended that the LEDs be stored in a sealed container with
appropriate desiccant, or in a desiccators with nitrogen ambient.
LEDs stored out of their original packaging for more than one week hrs should be baked at about 60 deg C for at least 20
hours before solder assembly.
8.3. Cleaning
Use alcohol-based cleaning solvents such as isopropyl alcohol to clean the LEDs if necessary.
5/6
Part No. : LTE-R38381-STR-U
BNS-OD-FC 002/A4
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