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Circuit
Features
Description
Absolute Maximum Ratings
Electrical Characteristics
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MCA230, MCA231, MCA255
OPTICALLY COUPLED ISOLATORS
Circuit
Features
High Current Transfer Ratio 100% min (MCA231: 200% min).
55 volt BVceo for MCA255
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Description
The MCA230, MCA231 and MCA255 are photodarlington optically coupled isolators consisting of an infrared emitting diode with a
silicon photodarlington transistor. Surface Mount Option Available.
All electrical parameters are 100% tested by manufacturing. Specifications are guaranteed to a cumulative 0.65% AQL.
Electro-optical Characteristics (Ta=25°C)
Absolute Maximum Ratings (Ta=25°C)
Storage Temperature:
Operating Temperature:
Lead Soldering:
Derate linearly from 25°C:
-55°C to +150°C
-55°C to +100°C
260°C for 10s, 1.6mm from case
3.5mW/°C
Input Diode
Forward DC Current:
Reverse DC Voltage:
Peak Forward Current):
Power Dissipation 25°C ambient:
Derate Linearly:
60mA
6V
3A (1µs pulse, 300pps
135mW
1.83mW/°C above 25°C
Detector
Collector-Emitter Breakdown Voltage BVCEO:
Collector-Base Breakdown Voltage BVCBO:
Emitter-Collector Breakdown Voltage BVECO:
Power Dissipation:
Derate Linearly:
30V (MCA255: 55V)
30V (MCA255: 55V)
7V
210mW
2.8mW/°C above 25°C
INPUT DIODE PARAMETER CONDITIONS MIN TYP MAX UNIT
VFForward Voltage IF=20mA 1.3 1.5 V
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VF/TAForward Voltage Temp Coefficient -1.8 mV/°C
VRReverse Voltage IR=10µA3 25 V
CJJunction Capacitance VF=0V, f=1MHz 50 pF
OUTPUT DETECTOR
Breakdown Voltage
BVCEO
Collector to Emitter IC=100µA, IF=0
MCA230, 231 30 V
MCA255 55 V
BVCBO
Collector to Base IC=10µA, IF=0
MCA230, 231 30 V
MCA255 55 V
BV EBO Emitter to Base I
E
=10µA, I
F
=0 5 V
I
CEO
Collector Dark Current V
CE
=10V, I
F
=0 100 nA
TRANSFER CHARACTERISTICS CONDITIONS MIN TYP MAX UNIT
CTR
DC Current Transfer Ratio (collector-emitter) IF=10mA,
VCE=5V
MCA230, MCA255 100 %
MCA231 200 %
VCE(SAT)
Saturation Voltage
MCA230, MCA255 IC=IF=50mA 1V
MCA231
IC=2mA, IF=1mA 1V
IC=10mA, IF=5mA 1V
IC=50mA, IF=10mA 1.2 V
SWITCHING TIMES
Non-Saturated
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Contents
tON Turn-On Time 10 µs
tOFF Turn-Off Time 100 µs
VISO Dielectric withstand test voltage IIO=< 10µA3150 Vdc
VISO Surge Insulation Voltage 3550 Vdc
RISO Isolation Resistance V 1.0=500Vdc 100 Gohm
CISO Isolation Capacitance f=1MHz 0.5 µs
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