1
Optoisolators (Photocouplers)
CNC1S171
Optoisolator
For isolated signal transmission
Features
High current transfer ratio : CTR >50%
High I/O isolation voltage :
V
ISO
= 5000 V
rms
(min.)
Fast response :
t
r
= 2
s, t
f
= 3
s(typ.)
Low dark current : I
CEO
< 100nA
VDE approved (VDE0884)
UL listed (No. E79920)
BSI certified
(BS415 No. 7889, BS7002 No. 7890)
SEMKO certified (No. 9625004)
DEMKO certified (No. 305848)
NEMKO certified (No. 199633176)
FIMKO certified (No. 191784)
CSA approved (No. CA109151)
*1
Pulse width
100
s, repeat 100 pps
*2
Input power derating ratio is
0.75 mW/C at Ta
25C.
*3
Output power derating ratio is
1.5 mW/C at Ta
25C.
Unit : mm
1: Anode
2: Cathode
3: Emitter
4: Collector
1
2
3
4
4.58
0.3
0.25
4-0.5
0.1
4-1.2
0.15
2.54
0.25
2.0
3.85
0.3
+0.15
0
7.62
0.3
10~12
2.54 min.
0.3 min.
6.2
0.5
5.0 max.
Pin connection
1
4
2
3
Absolute Maximum Ratings
(Ta = 25C)
Parameter
Symbol Ratings
Unit
Reverse voltage (DC)
V
R
6
V
Input (Light
Forward current (DC)
I
F
50
mA
emitting diode)
Pulse forward current
I
FP
*1
1
A
Power dissipation
P
D
*2
75
mW
Collector current
I
C
50
mA
Output (Photo Collector to emitter voltage
V
CEO
80
V
transistor)
Emitter to collector voltage
V
ECO
7
V
Collector power dissipation
P
C
*3
150
mW
Isolation voltage, input to output
V
ISO
5000
V
rms
Total power dissipation
P
T
200
mW
Operating ambient temperature
T
opr
30 to +100
C
Storage temperature
T
stg
55 to +125
C
Electrical Characteristics
(Ta = 25C)
Parameter
Symbol
Conditions
min
typ
max
Unit
Input
Reverse current (DC)
I
R
V
R
= 3V
10
A
characteristics
Forward voltage (DC)
V
F
I
F
= 50mA
1.35
1.5
V
Capacitance between pins
C
t
V
R
= 0V, f
= 1MHz
15
pF
Output
Collector cutoff current
I
CEO
V
CE
= 20V
5
100
nA
characteristics
Collector to emitter voltage
V
CEO
I
C
= 100
A
80
V
Collector to emitter capacitance
C
C
V
CE
= 10V, f
= 1MHz
10
pF
DC current transfer ratio
CTR
*1*4
V
CE
= 10V, I
F
= 5mA
50
600
%
Isolation voltage, input to output
V
ISO
t
= 1 min., RH < 60%
5000
V
rms
Transfer
Isolation capacitance, input to output
C
ISO
f
= 1MHz
0.7
pF
characteristics
Isolation resistance, input to output
R
ISO
V
ISO
= 500V
10
11
Rise time
t
r
*2
V
CC
= 10V, I
C
= 5mA,
2
s
Fall time
t
f
*3
R
L
= 100
3
s
Collector to emitter saturation voltage V
CE(sat)
I
F
= 20mA, I
C
= 1mA
0.1
0.2
V
*1
DC current transfer ratio (CTR) is a ratio of output current against DC input current.
*2
t
r
: Time required for the collector current to increase from 10% to 90% of its final value
*3
t
f
: Time required for the collector current to decrease from 90% to 10% of its initial value
2
CNC1S171
Optoisolators (Photocouplers)
P
C
, P
D
-- Ta
Collector power dissipation , power dissipation P
C
, P
D
(mW)
160
120
80
40
Ambient temperature Ta (C )
0
20
40
60
80
120
0
20
100
I
C
-- I
F
10
2
10
1
10
1
Forward current I
F
(mA)
Collector current I
C
(mA)
1
10
10
2
10
2
10
1
V
CC
= 10V
Ta = 25C
I
C
-- V
CE
40
10
20
30
Collector to emitter voltage V
CE
(V)
Collector current I
C
(mA)
8
16
24
40
32
0
0
I
C
-- V
CE(sat)
Collector to emitter saturation voltage V
CE(sat)
(V)
Collector current I
C
(mA)
Ta = 25C
10
2
1
10
0
0.2
0.4
0.6
0.1
0.3
0.5
10
1
Relative output current I
C
(%)
I
C
-- Ta
160
120
80
40
0
100
50
0
50
V
CC
= 5V
Ambient temperature Ta (C )
I
F
-- V
F
60
30
20
10
50
40
Forward voltage V
F
(V)
Forward current I
F
(mA)
0.9
1.0
1.1
1.2
1.4
1.3
0
0
Ta = 25C
P
D
P
C
I
F
= 10mA
10mA
5mA
5mA
1mA
1mA
I
F
= 50mA
20mA
10mA
5mA
2mA
50mA
40mA
30mA
25mA
20mA
15mA
12mA
10mA
9mA
7mA
6mA
5mA
3mA
1mA
8mA
4mA
2mA
*4
CTR classifications
Class
Q
R
S
CTR (%)
50 to 120
100 to 250
200 to 600
3
Optoisolators (Photocouplers)
CNC1S171
I
CEO
-- Ta
10
10
2
1
10
3
10
1
Ambient temperature Ta (C )
Dark current I
CEO
(
A)
10
4
40 20
0
40
80
20
60
100
t
r
-- I
C
10
1
Collector current I
C
(mA)
Rise time t
r
(
s)
1
10
10
2
10
1
10
1
10
2
10
2
V
CC
= 10V
Ta = 25C
t
f
-- I
C
Collector current I
C
(mA)
Fall time t
f
(
s)
10
1
10
2
10
1
10
2
1
10
10
1
10
2
V
CC
= 10V
Ta = 25C
Frequency characteristics
Measurement circuit of
frequency characteristics
10
1
Frequency f (kHz)
Relative power output P (dB)
10
10
2
10
3
10
3
10
1
10
2
1
Ta = 25C
V
CE
= 30V
20V
10V
R
L
= 1k
500
100
R
L
= 1k
500
100
10%
90%
t
d
t
r
t
f
R
L
V
CC
Sig.
OUT
Sig.
OUT
50
Sig.IN
,,
,,
,
,
10%
90%
t
d
t
r
t
f
R
L
V
CC
Sig.
OUT
Sig.
OUT
50
Sig.IN
,,
,
I
F
= 5mA
2mA
,,
,
,,
,
,
,
50k
50
50
5k
50
+10V
+10V
Sig.OUT
Sig.OUT
Sig.IN
+
100
F
16V
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