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
ISOCOM INC
720 E., Park Boulevard, Suite 104,
Plano, TX 75074 USA
Tel: (972) 423-5521
Fax: (972) 422-4549
31/7/97 DB92514-AAS/A1
1.2
3.0
4.0
3.0
3.35
7.0
6.0
0.5
0.5
7.62
1
24
3
0.26
13°
Max
2.54 Dimensions in mm
LOW INPUT CURRENT
PHOTOTRANSIST OR
OPTICALLY COUPLED ISOLATORS
APPROVALS
lUL recognised, File No. E91231
'X' SPECIFICATION APPROVALS
lVDE 0884 approval pending
DESCRIPTION
The SFH628A series of optically coupled
isolators consist of inverse parallel infrared light
emitting diodes and NPN silicon photo
transistors in space efficient dual in line plastic
packages.
FEATURES
lOptions :-
10mm lead spread - add G after part no.
Surface mount - add SM after part no.
Tape&reel - add SMT&R after part no.
lLow input current ±0.5mA IF
lHigh Current Transfer Ratios
(63-500% at ±1mA, 32% min at ±0.5mA)
lHigh Isolation Voltage (5.3kVRMS ,7.5kVPK )
lHigh BVCEO (55V min)
lAll electrical parameters 100% tested
lCustom electrical selections available
APPLICATIONS
lComputer terminals
lIndustrial systems controllers
lMeasuring instruments
lSignal transmission between systems of
different potentials and impedances
5.08
4.08
SFH628A-2, SFH628A-3,
SFH628A-4
ABSOLUTE MAXIMUM RATINGS
(25°C unless otherwise specified)
Storage Temperature -55°C to + 125°C
Operating Temperature -55°C to + 100°C
Lead Soldering Temperature
(1/16 inch (1.6mm) from case for 10 secs) 260°C
INPUT DIODE
Forward Current ±50mA
Power Dissipation 70mW
OUTPUT TRANSISTOR
Collector-emitter Voltage BVCEO 55V
Emitter-collector Voltage BVECO 6V
Power Dissipation 150mW
POWER DISSIPATION
Total Power Dissipation 200mW
(derate linearly 2.67mW/°C above 25°C)
10.16
0.26
7.62
10.2
9.5
OPTION SM
SURFACE MOUNT OPTION G
1.4
0.9
1.2
0.6
DB92514-AAS/A1
31/7/97
PARAMETER MIN TYP MAX UNITS TEST CONDITION
Input Forward Voltage (VF) 1.5 V IF = ±5mA
Output Collector-emitter Breakdown (BVCEO)55 V I
C
= 1mA
( Note 2 )
Emitter-collector Breakdown (BVECO) 6 V I
E
= 100µA
Collector-emitter Dark Current (ICEO) 200 nA VCE = 10V
Coupled Current Transfer Ratio (CTR) (Note 2)
SFH628A-2 63 20 0 % ±1mA IF , 0.5V VCE
SFH628A-2 32 % ±0.5mA IF , 1.5V VCE
SFH628A-3 10 0 32 0 % ±1mA IF , 0.5V VCE
SFH628A-3 50 % ±0.5mA IF , 1.5V VCE
SFH628A-4 16 0 50 0 % ±1mA IF , 0.5V VCE
SFH628A-4 80 % ±0.5mA IF , 1.5V VCE
Collector-emitter Saturation Voltage VCESAT
SFH628A-2 0. 4 V ±1mA IF , 0.5mA IC
SFH628A-3 0. 4 V ±1mA IF , 0.8mA IC
SFH628A-4 0. 4 V ±1mA IF , 1.25mA IC
Input to Output Isolation Voltage VISO 5300 VRMS See note 1
7500 VPK See note 1
Input-output Isolation Resistance RISO 5x1010 ΩVIO = 500V (note 1)
ELECTRICAL CHARACTERISTICS ( TA = 25°C Unless otherwise noted )
Note 1 Measured with input leads shorted together and output leads shorted together.
Note 2 Special Selections are available on request. Please consult the factory.
Output
Output
RL = 100Ω
Input
10%
90% 90%
10%
ton
tr
FIG 1
VCC
toff
tf
SWITCHING CHARACTERISTICS
IC = 2mA, V CC = 5V, RL = 100Ω, TA = 25°C (Fig 1)
ton
tr
toff
tf
Turn-on Time
Rise Time
Turn-off Time
Fall Time
µs
µs
µs
µs
6.0
3.5
5.5
5.0
UNITS
DB92514-AAS/A1
31/7/97
50
-30 0 25 50 75 100 125
Ambient temperature TA ( °C )
150
0
200
Ambient temperature TA ( °C )
Collector power dissipation PC (mW)
60
30
20
10
0
40
50
-30 0 25 50 75 100 125
Collector Power Dissipation vs. Ambient Temperature
Forward Current vs. Ambient Temperature
-30 0 25 50 75 100
Ambient temperature TA ( °C )
Collector-emitter voltage VCE ( V )
Collector-emitter saturation voltage VCE(SAT) (V)
Collector-emitter Saturation
Voltage vs. Ambient Temperature
100
TA = 25°C
0
0.8
1.2
1.6
2.0
0
0.04
0.08
0.12
0.16
0.20
0.24
0.28
Forward current IF (±mA)
0 0.2 0.4 0.6 0.8 1.0
Collector current IC (mA)
Relative current transfer ratio
Current Transfer Ratio vs. Forward Current
(normalized to SFH628A-2 & SFH628A-3)
Forward current IF (±mA)
Current transfer ratio CTR (%)
0
40
60
80
100
0
0.5
1.0
0.4
0.1 0.2 0.5 1 2 5
120
20
IF = ±1mA
IC = 0.5mA
1.5 IF = ±1mA
VCE = 0.5V
-30 0 25 50 75 100
Ambient temperature TA ( °C )
Relative Current Transfer Ratio
vs. Ambient Temperature
VCE = 0.5V
TA = 25 °C
Collector Current vs. Low Collector-emitter
Voltage (normalized to SFH628A-2 & SFH628A-3)
IF = ±1mA
IF = ±0.5mA
