5
Red, AlGaAs Red
Figure 7. Relative Luminous Intensity vs. DC For-
ward Current – AlGaAs.
Figure 6. Relative Luminous Intensity vs. DC For-
ward Current – Red.
Figure 5. Forward Current vs. Forward Voltage.Figure 4. Relative Efficiency (Luminous Intensity
per Unit Current) vs. Peak Current.
Figure 3. Maximum Allowable DC Current vs.
Ambient Temperature.
T
JMAX
= 100°C for Red and T
JMAX
= 110°C for
AlGaAs Red.
Figure 2. Maximum Tolerable Peak Current vs. Pulse Duration
– AlGaAs Red.
Figure 1. Maximum Tolerable Peak Current vs. Pulse Duration – Red.
20
15
12.5
10
1
1.5
2
3
4
5
6
8
1 10 100 1000 10000
t
P
- PULSE DURATION - μSEC
OPERATION IN THIS
REGION REQUIRES
TEMPERATURE
DERATING OF I
DC
MAX
DC OPERATION
I
PEAK
MAX
RATIO OF MAXIMUM OPERATING
PEAK CURRENT TO TEMPERATURE
DERATED MAXIMUM DC CURRENT
300 Hz
1 KHz
3KHz
10 KHz
f - REFRESH RATE
100 Hz
I
DC
MAX
10
1
2
3
4
5
6
7
9
8
1 10 100 1000 10000
t
P
- PULSE DURATION - μs
OPERATION IN THIS
REGION REQUIRES
TEMPERATURE
DERATING OF I
DC
MAX
DC OPERATION
I
PEAK
MAx
RATIO OF MAXIMUM OPERATING
PEAK CURRENT TO TEMPERATURE
DERATED MAXIMUM DC CURRENT
300 Hz
1 KHz
3KHz
10 KHz
f - REFRESH RATE
100 Hz
I
DC
MAX
40
0
5
10
15
20
25
30
35
25 10595857565554535
T
A
- AMBIENT TEMPERATURE -
o
C
RED
AlGaAs RED
R
θ
= 600¡C/W
J-A
I
DC
MAX - MAXIMUM DC CURRENT PER SEGMENT - mA
η
PEAK
- RELATIVE EFFICIENCY (NORMALIZED TO
1 AT 20 mA FOR RED: AT 1mA FOR AlGaAs RED)
1.2
0 16010080604020
I
PEAK
- PEAK SEGMENT CURRENT - mA
RED
AlGaAs RED
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1.1
140120
1.5
0
160
100
80
60
40
20
I
F
- FORWARD CURRENT PER SEGMENT - mA
RED
AlGaAs RED
2.00.5 4.03.53.01.0 2.5
140
120
V
F
- FORWARD VOLTAGE - V
0
RELATIVE LUMINOUS INTENSITY
(NORMALIZED TO 1.0 AT 20 mA)
1.4
0
I
F
- FORWARD CURRENT PER SEGMENT - mA
510152025
1.2
1.0
0.8
0.6
0.4
0.2
0
RELATIVE LUMINOUS INTENSITY
(NORMALIZED TO 1 AT 1mA)
0.5 20
20
2
0.1
I
F
- FORWARD CURRENT PER SEGMENT
15 10
10
5
1
0.20.1
For a Detailed Explanation on the Use of Data Sheet Information and Recommended Soldering Procedures,
See Application Note 1005.