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
7/12/00
DB92189-AAS/A2
OPTICALLY COUPLED ISOLATOR
PHOTODARLINGTON OUTPUT
MCA230X, MCA231X, MCA255X
MCA230, MCA231, MCA255
DESCRIPTION
The MCA230, MCA231, MCA255 series of
optically coupled isolators consist of an infrared
light emitting diode and NPN silicon
photodarlington in a space efficient dual in line
plastic package.
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.
lHigh Current Transfer Ratio
lHigh Isolation Voltage (5.3kVRMS ,7.5kVPK )
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
1
3
2
4
6
5
Dimensions in mm
3.3
2.54
6.4
6.2
1.54
8.8
8.4 4.3
4.1
0.5
0.5
0.3
7.8
7.4
9.6
8.4
ABSOLUTE MAXIMUM RATINGS
(25°C unless otherwise specified)
Storage Temperature -55°C to + 150°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 60mA
Reverse Voltage 5V
Power Dissipation 105mW
OUTPUT TRANSISTOR
Collector-emitter Voltage BVCEO
MCA255 55V
MCA230, MCA231 30V
Collector-base Voltage BVCBO
MCA255 55V
MCA230, MCA231 30V
Emitter-collector Voltage BVECO 7V
Power Dissipation 150mW
POWER DISSIPATION
Total Power Dissipation 250mW
(derate linearly 3.3mW/°C above 25°C)
APPROVALS
lUL recognised, File No. E91231
'X' SPECIFICATION APPROVALS
lVDE 0884 in 2 available lead form :
- - STD
- G form
VDE 0884 inSMD approval pending
lSETI approved, reg. no.151786-18
10.16
0.26
OPTION G
5.08
max.
SURFACE MOUNT
OPTION SM
1.2
0.6 1.4
0.9
10.2
9.5
PARAMETER MIN TYP MAX UNITS TEST CONDITION
Input Forward Voltage (VF)1.2 1.5 VIF = 20mA
Reverse Voltage (VR)3VIR = 10µA
Reverse Current (IR)10 µAVR = 3V
Output Collector-emitter Breakdown (BVCEO)
MCA230, MCA231 30 VIC = 100µA (note 2)
MCA255 55 VIC = 100µA (note 2)
Collector-base Breakdown (BVCBO)
MCA230, MCA231 30 VIC = 10µA (note 2)
MCA255 55 VIC = 10µA (note 2)
Emitter-collector Breakdown (BVECO)5VIE = 10µA
Collector-emitter Dark Current (ICEO)100 nA VCE = 10V
Coupled Collector Output Current ( IC ) (Note 2)
MCA230, MCA255 100 %10mA IF , 5V VCE
MCA231 200 %10mA IF , 5V VCE
Collector-emitter Saturation VoltageVCE(SAT)
MCA230, MCA255 1.0 V50mA IF , 50mA IC
MCA231 1.0 V1mA IF , 2mA IC
1.0 V5mA IF , 10mA IC
1.2 V10mA IF , 50mA IC
Input to Output Isolation Voltage VISO 5300 VRMS (note 1)
7500 VPK (note 1)
Input-output Isolation Resistance RISO 5x1010 ΩVIO = 500V (note 1)
Output Turn on Time ton 10 µsVCC= 2V,RL = 100Ω,
Output Turn off Time toff 100 µsIF = 10mA , fig.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.
DB92189-AAS/A2
7/12/00
Input
Output 10%
90%
10%
90%
toff
tr
ton
tf
Output
VCC = 10V
100Ω
Input
FIGURE 1
IF = 10mA
DB92189-AAS/A2
7/12/00
50
-30 0 25 50 75 100 125
Ambient temperature TA ( °C )
150
0
200
Ambient temperature TA ( °C )
Collector power dissipation P C (mW)
60
20
0
40
-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 saturation voltage V CE(SAT) (V)
Collector-emitter Saturation
Voltage vs. Ambient Temperature
100
0
0.2
0.4
0.6
0.8
1.0
1.2
Forward current I F (mA)
IF = 50mA
IC = 50mA
80
100
0
0.5
1.0
1.5
Relative Current Transfer Ratio
vs. Ambient Temperature
Relative current transfer ratio
-30 0 25 50 75 100
Ambient temperature TA ( °C )
IF = 10mA
VCE = 5V
0
10
Current Transfer Ratio vs.
Forward Current
Forward current IF (mA)
Current transfer ratio CTR (%)
Collector Current vs. Collector-emitter Voltage
Collector-emitter voltage VCE ( V )
Collector current I C (mA)
0 1 2 3 4 5
0
20
40
60
80
100
2mA
5mA
10mA
0.1 0.2 0.5 1 2 5 10 20 50 100
10000
1000
100
VCE = 5V
TA = 25°C
IF = 1mA
20
50mA TA = 25°C
50
5000
800
500
