MCA230/231/255
PHOTODARLINGTON
OPTOCOUPLER
FEATURES
• CTR Minimum
MCA230/255, 100%
MCA231, 200%
• Isolation Test Voltage, 5300 VAC
RMS
• Coupling Capacitance, 0.5 pF
• Fast Rise Time, 10
µ
s
• Fast Fall Time, 35
µ
s
• Underwriters Lab File #E52744
• VDE #0884 Available with Option 1
DESCRIPTION
The MCA230/231/255 are industry standard opto-
couplers, consisting of a Gallium Arsenide infrared
LED and a silicon phototdarlington. These opto-
couplers are constructed with a high voltage insu-
lation, double molded packaging process which
offers 7.5 KV withstand test capability.
Maximum Ratings
Emitter
Reverse Voltage .................................................6 V
Continuous Forward Current ........................ 60 mA
Power Dissipation at 25
°
C..........................135 mW
Derate Linearly from 25
°
C ......................1.8 mW/
°
C
Detector
Collector-Emitter Breakdown Voltage
MCA230/231 .................................................30 V
MCA255 ........................................................55 V
Emitter-Collector Breakdown Voltage ................7 V
Collector-Base Breakdown Voltage
MCA230/231 .................................................30 V
MCA255 ........................................................55 V
Power Dissipation at 25
°
C..........................210 mW
Derate Linearly from 25
°
C ......................2.8 mW/
°
C
Package
Total Package Dissipation at 25
°
C
(LED plus Detector) ................................260 mW
Derate Linearly from 25
°
C ......................3.5 mW/
°
C
Storage Temperature .................. –55
°
C to +150
°
C
Operating Temperature .............. –55
°
C to +100
°
C
Lead Soldering Time at 260
°
C .................... 10 sec.
Isolation Test Voltage ........................5300 VAC
RMS
Isolation Resistance
V
IO
=500 V, T
A
=25
°
C..................................10
12
Ω
V
IO
=500 V, T
A
=100
°
C................................ 10
11
Ω
Characteristics
(T
A
=25
°
C)
Symbol
Emitter
Forward Voltage
Reverse Current
Junction
Capacitance
Detector
BV
CEO
MCA230/231
MCA255
BV
ECO
BV
CBO
MCA230/231
MCA55
I
CEO
Package
V
CEsat
0.8
1.0
1.0
1.0
1.2
V
V
V
V
V
I
CE
=2 mA, I
F
=16 mA
I
C
=I
F
=50 mA
I
C
=2 mA, I
F
=1 mA
I
C
=10 mA, I
F
=5 mA
I
C
=50 mA, I
F
=10 mA
30
30
7
30
55
100
V
V
V
V
V
nA
I
C
=100
µ
A, I
F
=0 mA
I
C
=100
µ
A, I
F
=0 mA
I
E
=10
µ
A, I
F
=0 mA
I
C
=10
µ
A, I
F
=0 mA
I
C
=10
µ
A, I
F
=0 mA
V
CE
=10 V, I
F
=0 mA
V
F
I
R
C
J
50
1.1
1.5
10
V
µ
A
pF
I
F
=50 mA
V
R
=3 V
V
R
=3 V
Min.
Typ.
Max.
Unit
Condition
Dimensions in inches (mm)
Pin One ID.
3
.248 (6.30)
.256 (6.50)
4
5
6
2
1
Anode 1
Cathode 2
NC 3
6 Base
5 Collector
4 Emitter
.335 (8.50)
.343 (8.70)
.039
(1.00)
min.
4°
typ.
.018 (0.45)
.022 (0.55)
.300 (7.62)
typ.
.130 (3.30)
.150 (3.81)
18° typ.
.020 (.051) min.
.031 (0.80)
.035 (0.90)
.100 (2.54) typ.
.010 (.25)
.014 (.35)
.300 (7.62)
.347 (8.82)
.110 (2.79)
.150 (3.81)
DC Current
Transfer Ratio
MCA230/255
MCA231
Capacitance
Input to Output
Switching Times
CTR
CTR
C
IO
t
on
t
off
100
200
0.5
10
35
%
%
pF
µ
s
µ
s
V
CE
=5 V, I
F
=10 mA
V
CE
=5 V, I
F
=1 mA
R
L
=100
Ω
V
CE
=10 V
5–1
Figure 1. Forward voltage versus forward current
1.4
VF - Forward Voltage - V
Figure 5. Non-saturated and saturated HFE versus base current
HFE - Forward Transfer Gain
10000
8000
6000
4000
2000
0
.01
Vce = 1 V
Ta = 25°C
1.3
1.2
1.1
1.0
0.9
0.8
0.7
.1
Ta = -55°C
Ta = 25°C
Vce = 5 V
Ta = 85°C
1
10
IF - Forward Current - mA
100
.1
1
10
100
Ib - Base Current -
µA
Figure 2. Normalized non-saturated and saturated
CTRce at T
A
= 25
°
C versus LED current
NCTRce - Normalized CTR
Figure 6. Low to high propagation delay versus
collector load resistance and LED current
tpLH - Low/High Propagation
Delay -
µs
1.2
1.0
0.8
0.6
0.4
0.2
Normalized to:
Vce = 5 V
IF = 10 mA
Ta = 25
°C
Vce = 5 V
80 Ta = 25°C, Vcc = 5V
Vth = 1.5 V
60
40
1KΩ
220Ω
470Ω
20
100Ω
0
0
5
10
15
IF - LED Current - mA
20
Vce =1V
0.0
.1
1
10
100
IF - LED Current - mA
1000
Figure 3. Normalized non-saturated and saturated
collector-emitter current versus LED current
10 Normalized to:
Ta = 25°C
IF = 10 mA
1
Vce = 5 V
.1
.01
.001
.1
Vce = 5 V
Figure 7. High to low propagation delay versus
collector load resistance and LED current
20
tpHL - High/Low Propagation
delay -
µs
NIce - Normalized Ice
1KΩ
15
Vce = 1V
Ta = 25°C
Vcc = 5 V
Vth = 1.5 V
10
5
0
0
5
10
15
IF - LED Current - mA
20
100Ω
1
10
IF - LED Current - mA
100
Figure 4. Normalized collector-base photocurrent
versus LED current
10
NIcb - Normalized Icb
Figure 8. Switching timing waveform and schematic
I
F
VCC=5 V
F=10 KHz,
DF=50%
1
.1
.01
.001
.1
Normalized to:
Ta = 25°C
Vcb = 3.5 V
IF = 10 mA
V
O
t
R
t
D
t
PLH
V
TH
=1.5 V
t
F
RL
VO
IF=10 mA
1
10
IF - LED Current - mA
100
t
PHL
t
S
MCA230/231/255
5–2
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