LIGITEK ELECTRONICS CO.,LTD.
Property of Ligitek Only
INFRARED EMITTING DIODES
Pb
Lead-Free Parts
LSIR3333-PF
DATA SHEET
DOC. NO :
REV.
DATE
:
:
QW0905- LSIR3333-PF
A
04 - Mar. - 2008
LIGITEK ELECTRONICS CO.,LTD.
Property of Ligitek Only
PART NO. LSIR3333-PF
Page 1/7
Package Dimensions
5.0
5.9
7.6
8.6
1.5MAX
25.0MIN
0.5
TYP
1.0MIN
2.54TYP
+
-
Note : 1.All dimension are in millimeter tolerance is
±
0.25mm unless otherwise noted.
2.Specifications are subject to change without notice.
Features:
1. High radiant intensity.
2. Suitable for pulsed applications.
3. Low average degradation.
Descriptions:
The LSIR3333-PFseries are high power solution grown efficiency Gallium Arsenide
infrared emitting diodes encapsulated in water clear plastic
T-1 3/4 package individually
Device Selection Guide:
PART NO
LSIR3333-PF
MATERIAL
GaAIAs/GaAs
LENS COLOR
Water Clear
LIGITEK ELECTRONICS CO.,LTD.
Property of Ligitek Only
PART NO. LSIR3333-PF
Page 2/7
Absolute Maximum Ratings at Ta=25
℃
Ratings
Parameter
Symbol
SIR
Power Dissipation
Peak Forward Current
(300PPS,10
μ
s Pulse)
Forward Current
Reverse Voltage
Electrostatic Discharge
Operating Temperature
Storage Temperature
PD
I
FP
I
F
Vr
ESD
T
opr
Tstg
100
1
50
5
UNIT
mW
A
mA
V
2000
-40 ~ +85
-40 ~ +85
V
℃
℃
Electrical Optical Characteristics (Aa=25
℃
)
PARAMETER
Radiant Intensity
Aperture Radiant Incidence
Peak Emission Wavelength
Spectral Line Half Width
Forward Voltage
Reverse Current
Viewing Angle
SYMBOL
Le
Ee
Min.
8.0
1.0
Typ.
12
1.7
880
50
1.4
Max.
UNIT
mW/sr
mW/cm
nm
nm
2
TEST CONDITION
IF=20mA
IF=20mA
IF=20mA
IF=20mA
IF=20mA
VR=5V
λ
peak
△λ
VF
IR
2
θ
1/2
1.7
100
V
μ
A
deg
20
Note : 1.The forward voltage data did not including
±
0.1V testing tolerance.
2. The radiant intensity data did not including
±
15% testing tolerance.
LIGITEK ELECTRONICS CO.,LTD.
Property of Ligitek Only
PART NO. LSIR3333-PF
Page 3/7
Typical Electro-Optical Characteristics Curve
SIR CHIP
Fig.1 Forward Current vs. Rorward Voltage
1000
Fig.2 Relative Radiant Intensity vs. Wavelength
1.0
100
10
1
0.1
0.5
Relative Radiant Intensity
Normalize @20mA
Forward Current(mA)
0.5
1.0
1.5
2.0
2.5
0.0
750
800
850
900
950
1000
1050
Forward Voltage(V)
Wavelength(nm)
Fig.3 Relative Radiant Power
vs. Forward DC Current
10.0
Fig.4 Relative Radiant Power
vs. Forward Peak Current
10.0
Relative Radiant Power
Normalize @20mA
Relative Radiant Power
Normalize @100 mA
10
100
1.0
1.0
0.1
1
0.1
10
100
1000
I
FDC
(mA)
I
FPK
(mA)
Fig.5 Forward DC Voltage vs. Temperature
Forward DC Voltage @20 mA
Normalize @ 25
℃
1.2
Fig.6 Relative Radiant Power vs. Temperature
3.0
Relative Radiant Power
Normalize @ 20mA,25
℃
-20
0
20
40
60
80
100
2.5
2.0
1.5
1.0
0.5
0.0
-40
1.1
1.0
0.9
0.8
-40
-20
0
20
40
60
80
100
Ambient Temperature
[℃]
Ambient Temperature[
℃
]
LIGITEK ELECTRONICS CO.,LTD.
Property of Ligitek Only
PART NO. LSIR3333-PF
Page 4/7
Storage time:
1.The operation of Temperatures and RH are : 5
℃
~35
℃
,RH<60%.
2.Once the package is opened, the products should be used within a week.
Otherwise, they should be kept in a damp proof box with descanting agent.
Considering the tape life, we suggest our customers to use our products within
a year(from production date).
3.If opened more than one week in an atmosphere 5
℃
~ 35
℃
,RH<60%,
they should be treated at 60
℃±
5
℃
fo r 15hrs.
Drive Method:
LED is a current operated device, and therefore, require some kind of current limiting incorporated into
the driver circuit. This current limiting typically takes the form of a current limiting resistor placed in series
with the LED.
Consider worst case voltage variations than could occur across the current limiting resistor. The forwrd
current should not be allowed to change by more than 40 % of its desired value.
Circuit model A
LED
Circuit model B
LED
(A) Recommended circuit.
(B) The difference of brightness between LED could be found due to the VF-IF characteristics of LED.
Cleaning:
Use alcohol-based cleaning solvents such as isopropyl alcohol to clean the LED.
ESD(Electrostatic Discharge):
Static Electricity or power surge will damage the LED. Use of a conductive wrist band or anti-electrosatic
glove is recommended when handing these LED. All devices, equipment and machinery must be properly
grounded.
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