PHOTOCOUPLER
KB837-B
GENERAL PURPOSE
HIGH ISOLATION VOLTAGE
SINGLE TRANSISTOR TYPE
PHOTOCOUPLER SERIES
FEATURES
1.Lead forming (gull wing) type, for surface mounting.
2.High isolation voltage between input and output (Viso=5000 Vrms).
3.Compact dual-in-line package
KB837-B: 3-channel type.
4.Recognized by UL and CUL, file NO.E225308.
5.Approved by VDE 0884 Teil2(NO:40006364)
(Creepage distance between input and output:7mm or more).
6.RoHS compliant.
DESCRIPTION
1.The KB837-B (3-channel) is optically coupled isolators containing a GaAS light emitting diode
and an NPN silicon phototransistor.
2.The lead pitch is 2.54mm.
3.Solid insulation thickness between emitting diode and output phototransistor:>=0.6mm.
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.
SPEC NO: DS AD1555
APPROVED: J. Lu
REV NO: V.5
CHECKED: Tracy Deng
DATE: MAR/17/2005
DRAWN: Y.CHENG
PAGE: 1 OF 8
ERP: 1205000021
PHOTOCOUPLER
KB837-B
*PACKAGE
DIMENSIONS (UNIT:mm)
*
Lead Bending Type
TOLERANCE :
±
0.5[±0
±0.02]
UNLESS OTHERWISE NOTED.
±0
*
Absolute Maximum Ratings (Ta=25°
C)
°
Parameter
Forward current
Input
Reverse voltage
Power dissipation
Collector-emitter voltage
Emitter-collector voltage
Output
Collector current
Collector power dissipation
Total power dissipation
*1
Symbol
I
F
V
R
P
V
C E O
V
E C O
I
C
P
C
Ptot
Viso
Topr
Tstg
Tsol
Rating
50
6
70
35
6
50
150
200
5000
-30~+100
-55~+125
260
Unit
mA
V
mW
V
V
mA
mW
mW
Vrms
°C
°C
°C
Isolation voltage
Operating temperature
Storage temperature
*2
Soldering temperature
*1
*2
40 to 60% RH,AC for 1 minute.
For 10 seconds.
SPEC NO: DS AD1555
APPROVED: J. Lu
REV NO: V.5
CHECKED: Tracy Deng
DATE: MAR/17/2005
DRAWN: Y.CHENG
PAGE: 2 OF 8
ERP: 1205000021
PHOTOCOUPLER
KB837-B
*
Electro-optical Characteristics
Parameter
Forward voltage
Input
Peak forward voltage
Reverse current
Output
Collector dark current
*1
Current
Symbol
V
F
V
FM
I
R
I
CEO
CTR
V
CE(sat
)
f
c
Conditions
I
F
=20mA
I
FM
=0.5A
V
R
=4V
V
CE
=20V,I
F
=0mA
I
F
=5mA,V
CE
=5V
I
F
=20mA, I
C
=1mA
V
CE
=5V, I
C
=2mA
R
L
=100Ω,-3dB
V
CE
=2V, I
C
=2mA
R
L
=100Ω
Min.
___
___
___
___
50
___
___
___
___
Typ.
1.2
___
___
___
___
0.1
80
4
3
Max.
1.4
3.0
10
10
-7
600
0.2
___
18
18
Unit
V
V
µA
nA
A
%
transfer ratio
Transfer
charact-
eristics
Collector-emitter saturation voltage
C ut-o ff fre q ue ncy
Rise time
Response time
Fall time
KHz
µs
µs
t
r
t
f
Classification table of current transfer ratio is shown below.
Ic
CTR= I
F
X 100%
Model No.
KB837L-B
KB837A-B
KB837B-B
KB837C-B
KB837D-B
KB837AB-B
KB837BC-B
KB837CD-B
KB837AC-B
KB837BD-B
KB837AD-B
KB837-B
Rank mark
L
A
B
C
D
A or B
B or C
C or D
A,B or C
B,C or D
A,B,C or D
L,A,B,C,D or No mark
CTR(%)
50 to 100
80 to 160
130 to 260
200 to 400
300 to 600
80 to 260
130 to 400
200 to 600
80 to 400
130 to 600
80 to 600
50 to 600
SPEC NO: DS AD1555
APPROVED: J. Lu
REV NO: V.5
CHECKED: Tracy Deng
DATE: MAR/17/2005
DRAWN: Y.CHENG
PAGE: 3 OF 8
ERP: 1205000021
PHOTOCOUPLER
KB837-B
Fig. 1 Current Transfer Ratio vs.
Forward Current
Fig. 2 Forward Current vs.
Forward voltage
Fig. 3 Collector Current vs.
Collector-emitter Voltage
Fig. 4 Relative Current Transfer Ratio
vs. Ambient Temperature
Fig. 5 Collector-emitter Saturation
Voltage vs. Ambient Temperature
Fig. 6 Collector Dark Current vs.
Ambient Temperature
SPEC NO: DS AD1555
APPROVED: J. Lu
REV NO: V.5
CHECKED: Tracy Deng
DATE: MAR/17/2005
DRAWN: Y.CHENG
PAGE: 4 OF 8
ERP: 1205000021
PHOTOCOUPLER
KB837-B
Fig. 7 Forward Current vs.
Ambient Temperature
Fig. 8 Collector Power Dissipation vs.
Ambient Temperature
Fig. 9 Response Time vs.
Load Resistance
Test Circuit for Response Time
μ
Ω
Fig. 10 Frequency Response
Test Circuit for Frequency Response
Ω
Ω
Ω
SPEC NO: DS AD1555
APPROVED: J. Lu
REV NO: V.5
CHECKED: Tracy Deng
DATE: MAR/17/2005
DRAWN: Y.CHENG
PAGE: 5 OF 8
ERP: 1205000021
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