SFH618A-2X, SFH618A-3X, SFH618A-4X,
SFH618-2, SFH618-3, SFH618-4
LOW INPUT CURRENT
PHOTOTRANSISTOR
OPTICALLY COUPLED ISOLATORS
APPROVALS
UL recognised, File No. E91231
Package Code " EE "
'X' SPECIFICATION APPROVALS
VDE 0884 in 3 available lead form :-
- STD
- G form
- SMD approved to CECC 00802
Certified to EN60950 by :-
Nemko - Certificate No. P01102465
2.54
7.0
6.0
1.2
5.08
4.08
1
2
Dimensions in mm
4
3
7.62
4.0
3.0
0.5
13°
Max
0.26
3.0
DESCRIPTION
The SFH618 series of optically coupled isolators
consist of infrared light emitting diodes and NPN
silicon photo transistors in space efficient dual in line
plastic packages.
FEATURES
Options :-
10mm lead spread - add G after part no.
Surface mount - add SM after part no.
Tape&reel - add SMT&R after part no.
Low input current 0.5mA I
F
High Current Transfer Ratios (63-320% at
1mA, 32% min at 0.5mA)
High Isolation Voltage (5.3kV
RMS
,7.5kV
PK
)
High BV
CEO
(55V min)
All electrical parameters 100% tested
Custom electrical selections available
APPLICATIONS
Computer terminals
Industrial systems controllers
Measuring instruments
Signal transmission between systems of
different potentials and impedances
0.5
3.35
OPTION SM
SURFACE MOUNT
OPTION G
7.62
0.6
0.1
10.46
9.86
1.25
0.75
0.26
10.16
ISOCOM COMPONENTS LTD
Unit 25B, Park View Road West,
Park View Industrial Estate, Brenda Road
Hartlepool, Cleveland, TS25 1YD
Tel: (01429) 863609 Fax :(01429) 863581
6/8/08
DB92370
ABSOLUTEMAXIMUMRATINGS
(25°C unless otherwise specified)
Storage Temperature
-55°C to + 125°C
Operating Temperature
-30°C to + 100°C
Lead Soldering Temperature
(1/16 inch (1.6mm) from case for 10 secs) 260°C
INPUTDIODE
Forward Current
Reverse Voltage
Power Dissipation
OUTPUT TRANSISTOR
Collector-emitter Voltage BV
CEO
Emitter-collector Voltage BV
ECO
Collector Current
Power Dissipation
POWER DISSIPATION
Total Power Dissipation
(derate linearly 2.67mW/°C above 25°C)
50mA
6V
70mW
55V
6V
50mA
150mW
200mW
ELECTRICAL CHARACTERISTICS ( T
A
= 25°C Unless otherwise noted )
PARAMETER
Input
Forward Voltage (V
F
)
Reverse Current (I
R
)
Output
Collector-emitter Breakdown (BV
CEO
)
( Note 2 )
Emitter-collector Breakdown (BV
ECO
)
Collector-emitter Dark Current (I
CEO
)
Current Transfer Ratio (CTR) (Note 2)
SFH618-2
SFH618-2
SFH618-3
SFH618-3
SFH618-4
SFH618-4
Collector-emitter SaturationVoltageV
CESAT
SFH618-2
SFH618-3
SFH618-4
Input to Output Isolation Voltage V
ISO
Input-output Isolation Resistance R
ISO
Output Rise Time, tr
Output Fall Time, tf
Note 1
Note 2
5300
7500
5x10
10
4
3
18
18
55
6
200
MIN TYP MAX UNITS TEST CONDITION
1.5
10
V
μA
V
V
nA
I
F
= 5mA
V
R
= 6V
I
C
= 1mA
I
E
= 100μA
V
CE
= 10V
1mA I
F
, 0.5V V
CE
0.5mA I
F
, 1.5V V
CE
1mA I
F
, 0.5V V
CE
0.5mA I
F
, 1.5V V
CE
1mA I
F
, 0.5V V
CE
0.5mA I
F
, 1.5V V
CE
1mA I
F
, 0.32mA I
C
1mA I
F
, 0.5mA I
C
1mA I
F
, 0.8mA I
C
See note 1
See note 1
V
IO
= 500V (note 1)
V
CE
= 2V, I
C
= 2mA
R
L
= 100Ω
Coupled
63
32
100
50
160
80
125
200
320
%
%
%
%
%
%
0.4
0.4
0.4
V
V
V
V
RMS
V
PK
Ω
μS
μS
Measured with input leads shorted together and output leads shorted together.
Special Selections are available on request. Please consult the factory.
6/8/08
DB92370m-AAS/A4
Collector Power Dissipation vs. Ambient Temperature
200
Collector power dissipation P
C
(mW)
Collector Current vs. Low Collector-emitter
Voltage (normalized to SFH618-2 & SFH618-3)
2.0
T
A
= 25°C
150
Collector current I
C
(mA)
1.6
I
F
= 1mA
1.2
0.8
I
F
= 0.5mA
0.4
0
100
50
0
-30
0
25
50
75
100
125
Ambient temperature T
A
( °C )
Forward Current vs. Ambient Temperature
60
Relative current transfer ratio
0
0.2
0.4
0.6
0.8
1.0
Collector-emitter voltage V
CE
( V )
Relative Current Transfer Ratio
vs. Ambient Temperature
50
Forward current I
F
(mA)
1.5
I
F
= 1mA
V
CE
= 0.5V
40
30
20
10
0
-30
0
25
50
75
100
125
Ambient temperature T
A
( °C )
Collector-emitter Saturation
Voltage vs. Ambient Temperature
0.28
0.24
0.20
0.16
0.12
0.08
0.04
0
-30
0
25
50
75
100
Ambient temperature T
A
( °C )
1.0
0.5
0
-30
0
25
50
75
100
Ambient temperature T
A
( °C )
Current Transfer Ratio vs. Forward Current
(normalized to SFH618-2 & SFH618-3)
120
Current transfer ratio CTR (%)
Collector-emitter saturation voltage V
CE(SAT)
(V)
I
F
= 1mA
I
C
= 0.5mA
100
80
60
40
20
0
0.1
0.2
0.5
1
2
5
Forward current I
F
(mA)
DB92370m-AAS/A4
V
CE
= 0.5V
T
A
= 25 °C
6/8/08
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