GENERAL PURPOSE 6-PIN
PHOTOTRANSISTOR OPTOCOUPLERS
4N25
4N37
4N26
H11A1
4N27
H11A2
4N28
H11A3
4N35
H11A4
4N36
H11A5
Fig. 19 Dark Current vs. Ambient Temperature
10000
I
CEO
- COLLECTOR -EMITTER DARK CURRENT (nA)
V
CE
= 10 V
T
A
= 25擄C
1000
100
10
1
0.1
0.01
0.001
0
20
40
60
80
100
T
A
- AMBIENT TEMPERATURE (擄C)
TEST CIRCUIT
V
CC
= 10V
WAVE FORMS
INPUT PULSE
I
F
INPUT
R
BE
I
C
R
L
10%
90%
t
r
t
on
Adjust I
F
to produce I
C
= 2 mA
t
f
t
off
OUTPUT PULSE
OUTPUT
Figure 20. Switching Time Test Circuit and Waveforms
漏 2005 Fairchild Semiconductor Corporation
Page 9 of 15
6/15/05