Optical Characteristics at 25
°
C
Parameter
Symbol
Min. Typ. Max. Unit
Condition
Reference
Radiant On-Axis Intensity IE
HSDL-4250 124 180
-
-
-
mW/Sr IFDC=100mA
mW/Sr IFDC=100mA
Figure 5
HSDL-4251 56
-
100
Radiant On-Axis Intensity
-0.43
%/°C
IFDC=100mA
∆IE/∆T
Temperature Coefficient
Viewing Angle
2θ1/2
HSDL-4250
HSDL-4251
-
-
-
-
15
-
-
-
-
°
Figure 7
Figure 7
Figure 1
30
°
Peak Wavelength
λpk
870
0.22
nm
Peak wavelength
Temperature Coefficient
nm/°C IFDC=100mA
∆λ/∆T
Spectral Width
45
40
-
-
nm
ns
I
FDC=50mA
Figure 1
∆λ
Optical Rise and Fall Time tr/tf
IFDC=500mA
Duty Ratio = 20%
Pulse Width=125ns
Peak Wavelength Vs Relative Radiant Intensity
V-I Characteristics
1.2
1
100
0.8
0.6
0.4
0.2
0
10
1
800
820
840
860
880
900
920
940
0
0.5
1
1.5
2
Vf - Forward Voltage - (V)
Peak Wavelength in nm
Figure 1. Relative Radiant Intensity vs. Wavelength
Figure 2. DC Forward Current vs. Forward Voltage
Peak Forward Voltage Vs Peak Forward Current
Forward Voltage Vs Temperature
1000
100
1.8
1.7
1.6
1.5
1.4
1.3
1.2
10
1
I-Led=20mA
I-Led=100mA
1.1
1
-25
0
25
50
75
100
125
0
0.5
1
1.5
2
Temperature in Degrees
Vfpk - Peak Forward Voltage - (V)
Figure 3. Peak Forward Current vs. Forward Voltage
Figure 4. Forward Voltage vs. Ambient Temperature
3
LITEON [ LITE-ON TECHNOLOGY CORPORATION ]
