8
Figure 12. Relative Efficiency (Luminous
Intensity per Unit Current) vs. Peak
Current.
0
0.8
1.0
1.2
1.4
10020 806040
1.8
1.6
GREEN
HER / ORANGE
YELLOW
η
PEAK
– RELATIVE EFFICIENCY
(NORMALIZED TO 1 AT 5 mA FOR HER,
ORANGE AND YELLOW, AND 10 mA FOR GREEN)
I
PEAK
– PEAK FORWARD CURRENT
PER SEGMENT – mA
HER, Yellow, Green, Orange
Figure 6. Maximum Tolerable Peak Current vs.
Pulse Duration – HER, Orange.
Figure 7. Maximum Tolerable Peak
Current vs. Pulse Duration – Yellow.
Figure 10. Forward Current vs.
Forward Voltage Characteristics.
Figure 11. Relative Luminous
Intensity vs. DC Forward Current.
Figure 8. Allowable Peak Current vs.
Pulse Duration – Green.
Figure 9. Maximum Allowable DC Current per
Segment as a Function of Ambient Temperature.
RATIO OF MAXIMUM OPERATING
PEAK CURRENT TO TEMPERATURE
DERATED DC CURRENT
I PEAK
F
I MAX
DC
t – PULSE DURATION – µs
P
10
1
100
10 1000010001001
OPERATION IN THIS
REGION REQUIRES
TEMPERATURE
OPERATING OF I
MAXIMUM
DC
DC OPERATION
100 Hz
10 KHZ
3 KHz
1 KHz
300 Hz
RATIO OF MAXIMUM OPERATING
PEAK CURRENT TO TEMPERATURE
DERATED DC CURRENT
I PEAK
F
I MAX
DC
t – PULSE DURATION – µs
P
10
1
100
10 1000010001001
OPERATION IN THIS
REGION REQUIRES
TEMPERATURE
OPERATING OF I
MAXIMUM
DC
DC OPERATION
100 KHz
3 KHz
1 KHz
300 Hz
100 HZ
RATIO OF MAXIMUM OPERATING
PEAK CURRENT TO TEMPERATURE
DERATED DC CURRENT
I PEAK
F
I MAX
DC
t – PULSE DURATION – µs
P
10
1
100
10 1000010001001
OPERATION IN THIS
REGION REQUIRES
TEMPERATURE
OPERATING OF I
MAXIMUM
DC
DC OPERATION
100 Hz
10 KHZ
3 KHz
1 KHz
300 Hz
40
0
5
10
15
20
25
30
35
20 10090807060504030
T – AMBIENT TEMPERATURE – °C
A
I MAX – MAXIMUM DC CURRENT
PER SEGMENT – mA
DC
120110
50
45
HER, ORANGE
YELLOW
GREEN
R = 770°C/W
J-A
θ
0
100
80
60
40
20
I – FORWARD CURRENT PER SEGMENT – mA
F
2.0 4.03.01.0
V – FORWARD VOLTAGE – V
F
0 5.0
YELLOW
HER / ORANGE
GREEN
RELATIVE LUMINOUS INTENSITY
(NORMALIZED TO 1 AT 5 mA FOR HER AND )t
(YELLOW AND TO 1 AT 10 mA FOR GREEN)
15
0
10
8
6
4
2
2053010 25
12
I – FORWARD CURRENT PER SEGMENT – mA
F
0
YELLOW
GREEN
HER / ORANGE
