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PHOTOCOUPLER
KB8441
SPEC NO:DSAD1540
REV NO: V.2
DATE: MAY/05/2003 PAGE: 1 OF 8
APPROVED: J.LU
CHECKED: Tracy Deng
DRAWN: L.ZHANG
APPLICATIONS
1.Computer terminals
2.Registers, copiers, automatic vending machines
3.System appliances, measuring instruments
4.Programmable logic controller
5.Signal transmission between circuits of different potentials and impedances
KB8441: 4-channel type
FEATURES
DESCRIPTION
2.The lead pitch is 2.54mm
2. High current transfer ratio.(CTR:Min 600%,at I =Ó1mA ,V =2V)
3. High isolation voltage between input and output (Viso=5000 Vrms)
4. Compact dual-in-line package
GaAs light emitting diode and a darlington silicon phototransistor.
5. Recognized by UL and CUL, file NO. E225308
1.The KB8441 (4-channel) is optically coupled isolators containing two
1. AC Input.
F
CE
GENERAL PURPOSE
HIGH ISOLATION VOLTAGE
PHOTOCOUPLER SERIES
HIGH SENSITIVITY
PHOTOCOUPLER
KB8441
SPEC NO:DSAD1540
REV NO: V.2
DATE: MAY/05/2003 PAGE: 2 OF 8
APPROVED: J.LU
CHECKED: Tracy Deng
DRAWN: L.ZHANG
TOLERANCE : Ó0.5[Ó0.02 ] UNLESS OTHERWISE NOTED.
* PACKAGE DIMENSIONS (UNIT: mm)
DIP Type
8
1
0.9 [0.035] 0.2
3.
0[
0.
11
8
]
?= 0 to 13
2, 4, 6, 8. Cathode
1, 3, 5, 7. Anode
9, 11, 13, 15. Emitter
10, 12, 14, 16. Collector
0.
4[
0.
01
5]
M
I
N
.
7[
0.
27
6
]
0.5 [0.02] 0.1
1.2 [0.047] 0.3
19.82 [0.78]
2.
7
[0
.1
0
6
]
?
?
:
0.25 [0.01] 0.1
3.
5
[0
.1
3
8
]
7.62 [0.3] 0.3
Internal connection
diagram
16
K
B
8
141
Anode
mark
K
B
8
141
K
B
8
141
2.54 [0.1] 0.25
Top View
9
15
2
16
1
K
B
8
141
6.
5[
0.
25
6
]
10
11
12
14 13
6
5
7
3 4
9
8
Cathode
Anode
PHOTOCOUPLER
KB8441
SPEC NO:DSAD1540
REV NO: V.2
DATE: MAY/05/2003 PAGE: 3 OF 8
APPROVED: J.LU
CHECKED: Tracy Deng
DRAWN: L.ZHANG
* Electro-optical Characteristics(Ta=25:C)
Cut-off frequency
Parameter
Collector-emitter saturation voltage
Collector dark current
Peak forward voltage
Current transfer ratio
Forward voltage
Response time
I
CTR=
X 100%
.
Ic
Transfer
charact-
eristics
Input
*1
Output
=0mA
V
CE(
sat
)
Rise time
Fall time
mA
10
=
=2V, I
V
t
=100
L
R
CE
r
f
t
[
C
Ó
V
CE
=5V, I
C
=2mA
R
L
=100
[, -3dB
=
F
I
c
f
mA
5
=
C
0mA, I
2
Symbol
I
CEO
CTR
V
FM
=Ó1mA, V
F
I
F
0V,I
1
=
CE
V
=2V
CE
0.5A
Ó
=
FM
I
V
F
=Ó20mA
F
I
Conditions
kH
z
C
C
60
300
53
250
6
0.
1
8
V
Unit
V
V
600
-6
7500
10
3.0
Typ.
1.2
Min.
Max.
1.4
A
%
Parameter
Absolute Maximum Ratings
40 to 60%RH, AC for 1 minute
Emitter-collector voltage
Collector power dissipation
Collector current
Collector-emitter voltage
Power dissipation
Forward current
Operating temperature
For 10 seconds
Soldering temperature
Storage temperature
Isolation voltage
Total power dissipation
Output
Input
V
35
CEO
V
-30~+100
-55~+125
Topr
Tsol
Tstg
C
P
Viso
Ptot
ECO
V
C
I
:C
260
:C
:C
mW
150
200
5000
mW
rms
V
6
80
V
mA
(Ta=25:C)
P
F
I
Symbol
70
Ó50
mW
mA
Rating
Unit
PHOTOCOUPLER
KB8441
SPEC NO:DSAD1540
REV NO: V.2
DATE: MAY/05/2003 PAGE: 4 OF 8
APPROVED: J.LU
CHECKED: Tracy Deng
DRAWN: L.ZHANG
10
C
o
lle
c
t
o
r
d
a
r
k
c
u
r
r
e
n
t
I
CE
O
(A
)
-25
25
0
10
-9
100
75
50
-7
10
-8
10
-6
10
-5
V
+-
=10V
10
-4
50
F
o
r
w
ar
d
c
u
r
r
e
n
t
I
F
(m
A
)
2.0
1
0.5
0
1.5
1.0
2
3.5
2.5 3.0
5
20
200
100
500
-10
10
-25
Rel
a
t
i
o
v
ecurr
ent t
ra
n
s
f
e
r
r
a
t
i
o
n
(
%)
50
0
100
150
0
25
75
50
100
50
0.8
0.9
0.7
0.6
0.5
0.4
0.3
0.1
0.2
-25
0
0
25
1.0
100
75
C
I
.
=10mA
40
C
o
l
l
e
c
t
o
r
c
urr
ent
I
C
(m
A
)
0
0
2
1
3
20
80
60
100
1mA
5
4
2mA
5mA
Pc(MAX)
Fig. 1 Current Transfor Ratio vs.
Forward Current
Fig. 2 Forward Current vs.
Forward voltage
Fig. 4 Relative Current Transfer Ratio
vs. Ambient Temperature
Fig. 3 Collector Current vs.
Collector-emitter Voltage
Fig. 5 Collector-emitter Saturation
Voltage vs. Ambient Temperature
Fig. 6 Collector Dark Current vs.
Ambient Temperature
Ta=75:C
50:C
25:
C
0:C
-25:C
10
Ta=25 :
C
Ambient temperature Ta (:C)
400
800
1200
1600
2000
2400
0
0.1 0.2 0.5
1
2 3 4 5 6 7
10
Cur
r
en
t
t
r
ansfer
r
a
t
i
o
C
T
R
(
%)
V
+-
=2V
Ta=25:C
I
.
=1mA
V
+-
=2V
C
o
l
l
e
c
t
o
r
-
e
m
i
t
t
er
s
at
urat
i
o
n
v
o
l
t
a
g
e
V
CE
(sat)
(
V
)
I =20mA
I =5mA
.
+
Ambient temperature Ta(:C)
Collector-emitter voltage V
+-
(V)
Forward current I
.
(mA)
Forward voltage V
.
8
Ambient temperature
Ta(:)
PHOTOCOUPLER
KB8441
SPEC NO:DSAD1540
REV NO: V.2
DATE: MAY/05/2003 PAGE: 5 OF 8
APPROVED: J.LU
CHECKED: Tracy Deng
DRAWN: L.ZHANG
0.05
V
o
l
t
ag
e ga
i
n
A
v (
d
B
)
-20
-10
Frequency f(kHz)
1
0.5
0.2
5
2
50
100
[
R
L
=10K
[
1k
[
Fig. 10 Frequency Response
0.1
Load resistance R
L
(K
[
0
1
0.05
Test Circuit for Frequency Response
t
D
s
R
V
CE
=2V
I
C
=2mA
Ta=25:C
0.2
1
0.5
2
t
Output
L
R
Vcc
f
t
r
s
d
t
Resp
onse t
i
m
e
(
g
10
5
@
J
90%
100
50
Output
Input
J @
Input R
D
Output
R
L
10%
Fig. 9 Response Time vs.
Load Resistance
V
CE
=2V
I
C
=10mA
Ta=25:C
500
200
Test Circuit for Response Time
JH
JB
Vcc
Ambient temperature Ta(:C)
F
o
rwar
d cu
rre
nt
I
F
(m
A
)
-25
0
10
0
20
30
Ambient temperature Ta(:C)
Col
l
e
cto
r
p
ower
d
i
ssi
pat
i
on
Pc
(
m
W
)
-25
0
25
50
25
50
75
100
125
100
50
0
75
100
125
Fig. 7 Forward Current vs.
Ambient Temperature
40
50
60
Fig. 8 Collector Power Dissipation vs.
Ambient Temperature
150
200
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