Datasheet

6
Figure 4. Current transfer ratio vs. forward current. Figure 5. Collector current vs. collector-emitter volt-
age.
Figure 6. Relative current transfer ratio vs. tempera-
ture.
Figure 7. Collector-emitter saturation voltage vs.
temperature.
Figure 8. Collector dark current vs. temperature. Figure 9. Response time vs. load resistance.
I
C
– COLLECTOR CURRENT – mA
0
V
CE
– COLLECTOR-EMITTER VOLTAGE – V
10 15
10
5
15
50
4N25 fig 5
P
C
(MAX.)
T
A
= 25°C I
F
= 40 mA
I
F
= 30 mA
I
F
= 20 mA
I
F
= 10 mA
I
F
= 5 mA
RELATIVE CURRENT TRANSFER RATIO – %
0
200
100
300
4N25 fig 6
V
CE
= 10 V
I
F
= 10 mA
T
A
– AMBIENT TEMPERATURE – °C
-25 75250 50 100-55
V
CE(SAT.)
– COLLECTOR-EMITTER
SATURATION VOLTAGE – V
0
T
A
– AMBIENT TEMPERATURE – °C
-25 7525
0.1
0.3
0 50 100-55
0.2
4N25 fig 7
I
C
= 2 mA
I
F
= 50 mA
I
CEO
– COLLECTOR DARK CURRENT – A
10
-13
-25 80 125200 40 100-55
4N25 fig 8
T
A
– AMBIENT TEMPERATURE – °C
V
CE
= 10 V
10
-12
10
-11
10
-10
10
-9
10
-8
10
-7
10
-6
5
5
5
5
5
5
5
RESPONSE TIME – µs
0.1
R
L
– LOAD RESISTANCE – kΩ
0.1 5
1
0.5
0.2
0.5
100
0.2 2 100.05
2
4N25 fig 9
20 50
V
CE
= 10 V
I
C
= 2 mA
T
A
= 25°C
ts
td
tf
tr
1
5
10
20
50
CTR – CURRENT TRANSFER RATIO – %
0
I
F
– FORWARD CURRENT – mA
0.2 5 100
30
1
10
20
50
0.5 2 100.1
40
4N25 fig 4
V
CE
= 10 V
T
A
= 25°C
20 50
500 kΩ 100 kΩ
R
BE
=
Figure 11. Collector-emitter saturation voltage vs.
forward current.
Figure 10. Frequency response.
VOLTAGE GAIN AV – dB
-20
f – FREQUENCY – kHz
1 20 500
-5
5
-15
-10
5
2 10 500.5
0
4N25 fig 10
100 200
R
L
= 10 kΩ
V
CE
= 5 V
I
C
= 2 mA
T
A
= 25°C
R
L
= 1 kΩ
R
L
= 100 Ω
0
I
F
– FORWARD CURRENT – mA
20 30
2
7
100
4N25 fig 11
5 15 25
1
3
4
5
6
V
CE(SAT.)
– COLLECTOR-EMITTER
SATURATION VOLTAGE – V
T
A
= 25°C
I
C
= 0.5 mA
I
C
= 1 mA
I
C
= 2 mA
I
C
= 3 mA
I
C
= 6 mA
I
C
= 7 mA