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4N37

P1-P3P4-P6P7-P9P10-P12P13-P15
5/7/03
Page 7 of 15
© 2003 Fairchild Semiconductor Corporation
GENERAL PURPOSE 6-PIN
PHOTOTRANSISTOR OPTOCOUPLERS
4N25 4N26 4N27 4N28 4N35 4N36
4N37 H11A1 H11A2 H11A3 H11A4 H11A5
Fig. 9 CTR vs. RBE (Saturated)
(Black Package)
Fig. 10 CTR vs. RBE (Saturated)
(White Package)
R
BE
- BASE RESISTANCE (k Ω) R
BE
- BASE RESISTANCE (k Ω)
NORMALIZED CTR ( CTR
RBE
/ CTR
RBE(OPEN)
)
NORMALIZED CTR ( CTR
RBE
/ CTR
RBE(OPEN)
)
10 100 1000
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
V
CE
= 0.3 V
I
F
= 5 mA
I
F
= 10 mA
I
F
= 20 mA
10 100 1000
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
I
F
= 20 mA
I
F
= 10 mA
I
F
= 5 mA
V
CE
= 0.3 V
Fig. 7 CTR vs. RBE (Unsaturated)
(Black Package)
Fig. 8 CTR vs. RBE (Unsaturated)
(White Package)
R
BE
- BASE RESISTANCE (kΩ) R
BE
- BASE RESISTANCE (kΩ)
NORMALIZED CTR ( CTR
RBE
/ CTR
RBE(OPEN)
)
NORMALIZED CTR ( CTR
RBE
/ CTR
RBE(OPEN)
)
10 100 1000
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
I
F
= 20 mA
I
F
= 10 mA
I
F
= 5 mA
V
CE
= 5.0 V
10 100 1000
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
V
CE
= 5.0 V
I
F
= 20 mA
I
F
= 10 mA
I
F
= 5 mA
0.01 0.1 1 10
0.001
0.01
0.1
1
10
100
I
F
= 5 mA
I
F
= 20 mA
I
F
= 10 mA
Fig. 12 Collector-Emitter Saturation Voltage vs Collector Current
(White Package)
I
C
- COLLECTOR CURRENT (mA)
V
CE (SAT)
- COLLECTOR-EMITTER SATURATION VOLTAGE (V)
I
F
= 2.5 mA
T
A
= 25
˚C
Fig. 11 Collector-Emitter Saturation Voltage vs Collector Current
(Black Package)
I
C
- COLLECTOR CURRENT (mA)
V
CE (SAT)
- COLLECTOR-EMITTER SATURATION VOLTAGE (V)
0.01 0.1 1 10
0.001
0.01
0.1
1
10
100
I
F
= 2.5 mA
T
A
= 25
˚C
I
F
= 20 mA
I
F
= 10 mA
I
F
= 5 mA
5/7/03
4N25 4N26 4N27 4N28 4N35 4N36
4N37 H11A1 H11A2 H11A3 H11A4 H11A5
GENERAL PURPOSE 6-PIN
PHOTOTRANSISTOR OPTOCOUPLERS
Page 8 of 15
© 2003 Fairchild Semiconductor Corporation
N
O
R
M
A
L
IZ
E
D
t
on
- (t
on(R
BE
)
/ t
on(open)
)
N
O
R
M
A
L
IZ
E
D
t
on
- (t
on(R
BE
)
/ t
on(open)
)
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
Fig. 15 Normalized t
on
vs. R
BE
(Black Package)
Fig. 16 Normalized t
on
vs. R
BE
(White Package)
R
BE
- BASE RESISTANCE (k Ω) R
BE
- BASE RESISTANCE (k Ω)
10 100 1000 10000 100000
10 100 1000 10000 100000
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
V
CC =
10 V
I
C
= 2 mA
R
L
= 100 Ω
V
CC =
10 V
I
C
= 2 mA
R
L
= 100 Ω
S
W
IT
C
H
IN
G
S
P
E
E
D
- (
µ
s
)
Fig. 14 Switching Speed vs. Load Resistor
(White Package)
R-LOAD RESISTOR (kΩ)
0.1 1 10 100
0.1
1
10
100
1000
T
off
I
F
= 10 mA
V
CC
= 10 V
T
A
= 25°C
T
r
T
on
T
f
Fig. 13 Switching Speed vs. Load Resistor
(Black Package)
R-LOAD RESISTOR (kΩ)
0.1 1 10 100
S
W
IT
C
H
IN
G
S
P
E
E
D
- (
µ
s
)
0.1
1
10
100
1000
T
off
I
F
= 10 mA
V
CC
= 10 V
T
A
= 25°C
T
r
T
on
T
f
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1.1
1.2
1.3
1.4
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1.1
1.2
1.3
1.4
V
CC =
10 V
I
C
= 2 mA
R
L
= 100 Ω
V
CC =
10 V
I
C
= 2 mA
R
L
= 100 Ω
N
O
R
M
A
L
IZ
E
D
t
off
- (t
off(R
BE
)
/ t
off(open)
)
N
O
R
M
A
L
IZ
E
D
t
off
- (t
off(R
BE
)
/ t
off(open)
)
Fig. 17 Normalized t
off
vs. R
BE
(Black Package)
10 100 1000 10000 100000
R
BE
- BASE RESISTANCE (k Ω)
10 100 1000 10000 100000
R
BE
- BASE RESISTANCE (k Ω)
Fig. 18 Normalized t
off
vs. R
BE
(White Package)
5/7/03
Page 9 of 15
© 2003 Fairchild Semiconductor Corporation
GENERAL PURPOSE 6-PIN
PHOTOTRANSISTOR OPTOCOUPLERS
4N25 4N26 4N27 4N28 4N35 4N36
4N37 H11A1 H11A2 H11A3 H11A4 H11A5
Fig. 19 Dark Current vs. Ambient Temperature
T
A
- AMBIENT TEMPERATURE
(°C)
0 20406080100
I
CEO
- C
O
L
L
E
C
T
O
R
-E
M
IT
T
E
R
D
A
R
K
C
U
R
R
E
N
T
(n
A
)
0.001
0.01
0.1
1
10
100
1000
10000
V
CE
= 10 V
T
A
= 25°
C
OUTPUT PULSE
INPUT PULSE
TEST CIRCUIT WAVE FORMS
t
r
t
f
INPUT
I
F
R
L
R
BE
V
CC
= 10V
OUTPUT
t
on
10%
90%
t
off
Figure 20. Switching Time Test Circuit and Waveforms
I
C
Adjust
I
F to produce
I
C = 2 mA
P1-P3P4-P6P7-P9P10-P12P13-P15

4N37

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Buy 4N37
Manufacturer:
Lite-On
Description:
Transistor Output Optocouplers PTR 100%, 1.5KV
Lifecycle:
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