Photocoupler
The PC-18T1 has one channel in a 4-pin package.
The PC-18T2 has two channels in a 8-pin package.
The PC-18T4 has four channels in a 16-pin package.
FEATURES
Small Package Size
Collector-Emitter Voltage : Min.30V
Current Transfer Ratio : Type 1000% (at I
F
=1mA, V
CE
=2V)
Electrical Isolation Voltage : AC2500V
rms
UL Recognized File No. E107486
APPLICATIONS
Interface between two circuits of different potential
Automatic Vending Machine
Power Supply Regulators
PC-18T1 PC-18T2 PC-18T4
These Photocouplers cosist of a Gallium Arsenide Infrared Emitting
Diode and a Silicon NPN Photo Darlington transistor perachannel.
Telephone Line Receiver
1/3
DIMENSION
(Unit : mm)
PC18T1
PC18T2
PC18T4
0.25
0
~ 1 5
6
.
5
0
.
2
5
Orientation Mark
0
.
5
1
M
i
n
.
3
.
5
0
.
2
5
2
.
5
M
i
n
.
0.5
1.2
2.54 0.25
6.5
7.62
0.25
4.6 0.25
1 2
4 3
0
~ 1 5
0.25
6
.
5
0
.
2
5
0
.
5
1
M
i
n
.
3
.
5
0
.
2
5
2
.
5
M
i
n
.
2.54 0.25
1.2
0.5
6.5
7.62 0.25
9.7 0.25
Orientation Mark
8 6 5
7
2 3
4
1
7.62 0.25
6
.
5
0
.
2
5
19.8 0.25
3
.
5
0
.
2
5
0
.
5
1
M
i
n
.
2
.
5
M
i
n
.
0.5
1.2
2.54 0.25
0
0.25
6.5
Orientation Mark
1
15 13
11 9
14
16 12
10
4
3
2 6
5 7
8
Photocoupler
MAXIMUM RATINGS (Ta=25
)
*1. Input current with 100
s
pulse width, 1% duty cycle
*2. Measured at RH=40~60% for 1min
*3. 1/16 inch form case for 10sec
ELECTRO-OPTICAL CHARACTERISTICS
(Ta=25
, unless o
therwise
noted)
I
F
=10mA
V
R
=5V
V=0, f=1kHz
I
C
=0.5mA
I
E
=0.1mA
I
F
=0, V
CE
=10V
V
CE
=0, f=1kHz
I
F
=1mA, V
CE
=2V
I
F
=1mA, I
C
=2mA
V=0, f=1kHz
V
CE
=10V, R
L
=100
I
C
=10mA
*4. CTR=(I
C
/I
F
) X 100 (%)
RH=40~60%, V=500V
Coupled
Rise Time
Fall Time
Condition
Power Dissipation
tf
C
T
BV
CEO
CTR
V
CE(SAT)
BV
ECO
I
CEO
C
CE
-
-
-
10
-
-
Min.
-
-
30
5
-
30
300
100
Typ.
1.15 V
PC-18T1 PC-18T2 PC-18T4
P
D
150 mW
-
-
1.0
-
-
100
- -
Max.
1.30
10
-
-
-
100
-
Unit.
-
pF
Symbol
V
F
I
R
pF
%
V
pF
V
V
nA
-
600
-
-
tr
-
R
IO
0.85
1
10
11
C
IO
Parameter
Capacitance
Current Transfer Ratio
*4
Collector-Emitter Saturation Voltage
Input
Output
Forward Voltage
Capacitance
Reverse Current
Collector-Emitter Breakdown Voltage
Emitter-Collector Breakdown Voltage
Collector Dark Current
Input-Output Isolation Resistance
Input-Output Capacitance
Total Power Dissipation P
tot
250 mW
Lead Soldering Temperature
*3
T
sol
260
Operating Temperature T
opr
-30~+100
Storage Temperature T
stg
-55~+125
Input to Output Isolation Voltage
*2
V
iso
AC2500 V
rms
V
V
mA
Collector Power Dissipation P
C
150
mW
Output
Collector-Emitter Breakdown Voltage BV
CEO
30
Emitter-Collector Breakdown Voltage BV
ECO
5
Collector Current I
C
50
1 A
125
60 mA
5 V
Input
Forward Current I
F
Reverse Voltage V
R
Peak Forward Current
*1
I
FP
Junction Temperature T
J
Parameter
Symbol Rating
Unit
2/3
Photocoupler
PC-18T1 PC-18T2 PC-18T4
3/3
Collector-Emitter Voltage
V
CE
(V)
Collector Current vs.
Collector-Emitter Voltage
0 2 4 6
C
o
l
l
e
c
t
o
r
C
u
r
r
e
n
t
I
C
(
m
A
)
8 10
10
Load Resistance
R
L
(
)
2
Response Time vs.
Load Resistance
R
e
s
p
o
n
s
e
T
i
m
e
t
r
,
t
f
(
u
s
)
D
a
r
k
C
u
r
r
e
n
t
I
C
E
O
(
u
A
)
Ambient Temperature
T
a
(
)
0
0.001
0.01
40
20
0.1
10
80
60 100
Dark Current vs.
Ambient Temperature
10
20
30
40
Output
Input
Test Circuit
V
IN
R
R
L
V
O
V
CC
Waveform
10%
90%
Switching Time Test Circuit
tr
tf
1
C
o
l
l
e
c
t
o
r
C
u
r
r
e
n
t
I
C
(
m
A
)
Forward Current
I
F
(mA)
10
0
1 3 5 7 9 11
Collector Current vs.
Forward Current
40
30
20
~
60
50
100
C
o
l
l
e
c
t
o
r
P
o
w
e
r
D
i
s
s
i
p
a
t
i
o
n
P
C
(
m
W
)
Collector Power Dissipation vs.
Ambient Temperature
250
40
Ambient Temperature
T
a
()
0
-20
0
20
150
50
100
200
80
60 100
I
F
=3mA
I
F
=2.5mA
I
F
=2mA
I
F
=1.5mA
I
F
=0.5mA
I
F
=1mA
P
C
(max.)
V
CE
=24V
V
CE
=10V
50
-20
0
30
F
o
r
w
a
r
d
C
u
r
r
e
n
t
I
F
(
m
A
)
10
20
40
0 20 40 60
100
80
Forward Current vs.
Ambient Temperature
Forward Voltage
V
F
(V)
20
0
0.4
100
120
140
60
40
80
F
o
r
w
a
r
d
C
u
r
r
e
n
t
I
F
(
m
A
)
1.2
0.8 1.6
T
a
=70
T
a
=25
T
a
=-55
Forward Current vs.
Forward Voltage
2.0
T
a
=25
Ta=25
V
CE
=2V
V
CE
=10V
I
C
=10mA
T
a
=25
1
0.05 0.1 0.2 0.5
tf
tr
10
100
1000
5000
Ambient Temperature
T
a
(
)
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