2/12/03
Page 3 of 6
© 2003 Fairchild Semiconductor Corporation
QTLP601C-2
HER
QTLP601C-3
Yellow
QTLP601C-4
Green
QTLP601C-7
AlGaAs Red
QTLP601C-B
Blue
SURFACE MOUNT LED LAMP
STANDARD BRIGHT 0603 (0.6 mm Height)
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
Fig.4 Radiation Diagram
-90˚ 90˚