Relative Spectrum Emission Irel = f (l), TA = 25oC, IF = 20mA
V(l) = Standard eye response curve
White
45
40
35
30
25
20
15
10
5
0
350
450
550
650
750
850
950
1050
Wavelength (nm)
FIG.1 RELATIVE LUMINOUS
INTERSITY
Forward Current IF = f (VF)
TA = 25oC
Relative Luminous Intensity IV/IV (20mA) = f (IF)
TA = 25oC
50
2.0
1.8
(mA)
IF
IV
40
30
20
10
0
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
0.0
1.0
2.0
3.0
4.0
5.0
6.0
0
10
20
30
40
50
VF (V)
IF (mA)
Forward Current IF (mA)
Forward Voltage (V)
FIG.2 FORWARD CURRENT
VS. FORWARD VOLTAGE
FIG.3 RELATIVE LUMINOUS INTENSITY
VS. FORWARD CURRENT
Y
Radiation Characteristic Irel = f (q)
Ambient Temperature VS. Allowable Forward
X
0o
10o
20o
40
(mA)
30o
40o
IF
X
Y
30
1.0
0.9
50o
60o
20
70o
80o
90o
10
0.8
TA temp. ambient
0
0.7 0.5 0.3 0.1
0.2 0.4 0.6
0
20
40
60
80
100
(oC)
T
Ambient Temperature TA (oC)
FIG.4 FORWARD CURRENT
VS. AMBIENT TEMPERATURE
FIG.5 RADIATION DIAGRAM
4
UOT [ UNITY OPTO TECHNOLOGY ]
