Typical Performance Curves
Fig. 1 LED Forward Voltage vs. Forward Current
(Black Package)
Fig. 2 LED Forward Voltage vs. Forward Current
(White Package)
1.8
1.7
1.6
1.5
1.4
1.8
1.7
1.6
1.5
1.4
1.3
1.2
1.1
1.0
T
T
T
= -55°C
= 25°C
= 100°C
A
A
T
= -55°C
A
1.3
1.2
1.1
1.0
T
T
= 25°C
A
A
= 100°C
A
1
10
100
1
10
100
I
- LED FORWARD CURRENT (mA)
I - LED FORWARD CURRENT (mA)
F
F
Fig.3 Normalized CTR vs. Forward Current
(Black Package)
Fig.4 Normalized CTR vs. Forward Current
(White Package)
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
V
T
= 5.0V
V
T
= 5.0V
CE
Normalized to
= 10 mA
Normalized to
I = 10 mA
F
CE
= 25°C
= 25°C
I
F
A
A
0
5
I
10
15
20
0
2
4
6
8
10
12
14
16
18
20
- FORWARD CURRENT (mA)
I - FORWARD CURRENT (mA)
F
F
Fig. 5 Normalized CTR vs. Ambient Temperature
(Black Package)
Fig. 6 Normalized CTR vs. Ambient Temperature
(White Package)
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
1.4
1.2
1.0
0.8
0.6
0.4
I = 5 mA
F
I
= 5 mA
F
I
= 10 mA
F
I
= 10 mA
F
I
= 20 mA
F
Normalized to
= 10 mA
Normalized to
= 10 mA
I
I
= 20 mA
F
F
I
F
T
A
= 25°C
T
A
= 25°C
-75
-50
-25
0
25
50
75
100
125
-60
-40
-20
0
20
40
60
80
100
T
- AMBIENT TEMPERATURE (°C)
T - AMBIENT TEMPERATURE (°C)
A
A
©2006 Fairchild Semiconductor Corporation
4N29, 4N30, 4N31, 4N32, 4N33 Rev. 1.0.1
www.fairchildsemi.com
4
ROCHESTER [ Rochester Electronics ]
