Datasheet

2/12/03
Page 3 of 7
© 2003 Fairchild Semiconductor Corporation
QTLP650C-2 / QTLP650D-2 HER QTLP650C-3 / QTLP650D-3 Yellow
QTLP650C-4 / QTLP650D-4 Green QTLP650C-7 / QTLP650D-7 AlGaAs Red
QTLP650C-B Blue
SURFACE MOUNT LED LAMP
STANDARD BRIGHT 1206
TYPICAL PERFORMANCE CURVES
Fig. 3 Relative Intensity vs. Peak Wavelength
1.0
0.5
0
300 350 400 450 500 550 600 650 700 750
90
I
F
- FORWARD CURRENT (mA) RELATIVE INTENSITY
V
F
- FORWARD VOLTAGE (V)
WAVELENGTH (nm)
Fig. 1 Forward Current vs. Forward Voltage
40
50
60
70
80
30
20
10
0
1.0 2.0 2.5 3.0 4.0 5.0
I
F
- DC FORWARD CURRENT (mA)
RELATIVE LUMNOUS INTENSITY
(NORMALIZED AT 20 mA)
Fig. 2 Relative Luminous Intensity vs.
DC Forward Current
2.0
1.5
1.0
0.5
0.0
0 5 10 15 20 25
30
YELLOW
GREEN
HER
BLUE
AlGaAs
RED
HER
YELLOW
GREEN
I
F
- FORWARD CURRENT (mA)
T
A
- AMBIENT TEMPERATURE (˚C)
Fig.5 Maximum Forward Current
vs. Ambient Temperature
50
40
30
20
10
0
020406080
100
AlGaAs
RED
BLUE
GREENBLUE
HER
AlGaAs REDYELLOW
REL. LUMINOUS INTENSITY (%)
-80 ˚ 80 ˚
-70 ˚ 70 ˚
-60 ˚ 60 ˚
-50 ˚ 50 ˚
-40 ˚ 40 ˚
-30 ˚ 30 ˚
-20 ˚ 20 ˚
-10 ˚ 10 ˚
0 ˚
1.0 0.8 0.6 0.4 0.2 0 0.2 0.4 0.6 0.8 1.0
QTLP650DQTLP650C
Fig.4 Radiation Diagram
-90 ˚ 90 ˚