50
5
10
1
.5
.1
51 10 50 100 200 400
V
AK
- ANODE TO CATHODE VOLTAGE (VOLTS)
Figure 1. Input Current To Trigger vs. Anode-Cathode Voltage
I
FT
- NORMALIZED INPUT CURRENT TO TRIGGER
100
1000
10
1
.01
0
.001
0.5 1.0 2.0 3.0
V
AK
- FORWARD VOLTAGE (VOLTS)
Figure 6. Input Characteristics I
F
vs. V
F
I
F
- FORWARD CURRENT (MILLIAMPERES)
40
100
4
6
8
20
2
10
1
.2
.1
.6
.8
.4
21486 10 20 40 60 100 200 400 1000
PULSE WIDTH (MICRO SECONDS)
Figure 4. Input Current To Trigger vs. Pluse Width
I
FT
- NORMALIZED INPUT CURRENT TO TRIGGER
Figure 3. Input Current To Trigger Distribution vs. Temperature
.4
.2
.1
1
.8
.6
6
4
2
12
10
8
-40-60 -20 0 20 40 60 80 100 120
-40 -20 0 20 40 60 80 100
T
A
- AMBIENT TEMPERATURE (˚C)
T
A
- AMBIENT TEMPERATURE (˚C)
Figure 2. Input Current To Trigger vs. Temperature
I
FT
-
NORMALIZED INPUT CURRENT TO TRIGGER
.4
.2
.1
1
.8
.6
6
4
2
10
8
I
FT - NORMALIZED INPUT CURRENT TO TRIGGER
4
6
8
12
2
10
16
14
20
18
24
22
2010 30 5040 60 70 80 90 100
I
F
- INPUT CURRENT (MILLIAMPERES)
Figure 5. Turn-On Time vs. Input Current
t
on
- TURN ON TIME (MICROSECONDS)
R
GK
= 300Ω
1K
R
GK
= 300Ω
1K
NORMALIZED TO
V
AK
= 50V
R
GK
= 10K
T
A
= 25˚C
NORMALIZED TO
V
AK
= 50V
R
GK
= 10K
T
A
= 25˚C
V
AK
= 50V
t
on
= t
d
+ I
r
t
r
≈ 1µS
NORMALIZED TO
V
AK
= 50V
R
GK
= 10K
T
A
= 25˚C
NORMALIZED TO
V
AK
= 50V
R
GK
= 10K
T
A
= 25˚C
10K
27K
56K
10K
27K
56K
1K
10K
27K
56K
R
GK
= 300Ω
90 TH PERCENTILE
10 TH PERCENTILE
10K
56K
R
GK
= 1K
PHOTO SCR OPTOCOUPLERS
4N39 4N40
DS300381 2/27/01 3 OF 8 www.fairchildsemi.com