GENERAL PURPOSE 6-PIN
PHOTOTRANSISTOR OPTOCOUPLERS
4N25
4N37
4N26
H11A1
4N27
H11A2
4N28
H11A3
4N35
H11A4
4N36
H11A5
Fig. 13 Switching Speed vs. Load Resistor
(Black Package)
1000
I
F
= 10 mA
V
CC
= 10 V
T
A
= 25°C
1000
Fig. 14 Switching Speed vs. Load Resistor
(White Package)
I
F
= 10 mA
V
CC
= 10 V
T
A
= 25°C
SWITCHING SPEED - (µs)
T
off
10
T
f
T
on
SWITCHING SPEED - (µs)
100
100
10
T
off
T
f
T
on
1
1
T
r
T
r
0.1
0.1
1
10
100
0.1
0.1
1
10
100
R-LOAD RESISTOR (kΩ)
R-LOAD RESISTOR (kΩ)
Fig. 15 Normalized t
on
vs. R
BE
(Black Package)
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
10
100
1000
10000
100000
V
CC =
10 V
I
C
= 2 mA
R
L
= 100
Ω
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
10
Fig. 16 Normalized t
on
vs. R
BE
(White Package)
NORMALIZED t
on
- (t
on(R
BE
)
/ t
on(open)
)
NORMALIZED t
on
- (t
on(R
BE
)
/ t
on(open)
)
V
CC =
10 V
I
C
= 2 mA
R
L
= 100
Ω
100
1000
10000
100000
R
BE
- BASE RESISTANCE (k
Ω)
R
BE
- BASE RESISTANCE (k
Ω)
Fig. 17 Normalized t
off
vs. R
BE
(Black Package)
1.4
1.3
1.4
1.3
Fig. 18 Normalized t
off
vs. R
BE
(White Package)
NORMALIZED t
off
- (t
off(R
BE
)
/ t
off(open)
)
NORMALIZED t
off
- (t
off(R
BE
)
/ t
off(open)
)
1.2
1.1
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
10
100
1000
10000
100000
V
CC =
10 V
I
C
= 2 mA
R
L
= 100
Ω
1.2
1.1
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
10
100
1000
10000
100000
V
CC =
10 V
I
C
= 2 mA
R
L
= 100
Ω
R
BE
- BASE RESISTANCE (k
Ω)
R
BE
- BASE RESISTANCE (k
Ω)
© 2005 Fairchild Semiconductor Corporation
Page 8 of 15
6/15/05
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