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I
F
 - DC FORWARD CURRENT (mA)
Fig. 2 Relative Luminous Intensity
vs. DC Forward Current
2.5
2.0
1.5
1.0
0.5
0.0
0
10
20
30
40
50
100
90
80
70
60
50
40
30
20
10
0
2.0
2.5
3.0
3.5
4.0
4.5
5.0
V
F
 - FORWARD VOLTAGE (V)
Fig. 1 Forward Current vs. Forward Voltage
AMBIENT TEMPERATURE T
A
 (贑)
50
40
30
20
10
0
0
25
50
75
100
Fig.5 Maximum Forward Current
vs. Ambient Temperature
Fig.4 Radiation Diagram
Fig. 3 Relative Intensity vs. Peak Wavelength
1.0
0.5
0
400
450
500
550
600
650
WAVELENGTH (nm)
IB
IG
 IG
IB
REL. LUMINOUS INTENSITY (%)
-80?/DIV>
80?/DIV>
-70?/DIV>
70?/DIV>
-60?/DIV>
60?/DIV>
-50?/DIV>
50?/DIV>
-40?/DIV>
40?/DIV>
-30?/DIV>
30?/DIV>
-20?/DIV>
20?/DIV>
-10?/DIV>
10?/DIV>
0?/DIV>
1.0   0.8   0.6  0.4   0.2   0   0.2   0.4  0.6  0.8  1.0
-90?/DIV>
90?/DIV>
TYPICAL PERFORMANCE CURVES (QTLP660C-IG and IB)
SURFACE MOUNT LED LAMP
SUPER BRIGHT 1.8 mm (Dome Lens)
QTLP660C-R Red
QTLP660C-E Orange
QTLP660C-O Yellow-Orange
QTLP660C-Y Yellow
QTLP660C-AG Yellow-Green
QTLP660C-IG True Green
QTLP660C-IB Blue
DS300103
8/31/01
5 OF 8
www.fairchildsemi.com
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