5–1
FEATURES
• High Current Transfer Ratio, 75% to 450%
• Minimum Current Transfer Ratio, 10%
• Guaranteed at I
F
=1mA
• High Collector-Emitter Voltage, BV
CEO
=70V
• Long Term Stability
• Industry Standard DIP Package
• Underwriters Lab File #E52744
• VDE 0884 Available with Option 1
DESCRIPTION
The IL201/202/203 are optically coupled pairs
employing a Gallium Arsenide infrared LED and a
Silicon NPN phototransistor. Signal information,
including a DC level, can be transmitted by the
device while maintaining a high degree of electrical
isolation between input and output. The IL201/202/
203 can be used to replace r elays and transformers
in many digital interface applications, as well as
analog applications such as CRT modulation.
Maximum Ratings
Emitter
Peak Reverse Voltage........................................ 6 V
Continuous Forward Current.........................60 mA
Power Dissipation at 25
°
C......................... 100 mW
Derate Linearly from 25
°
C ...................1.33 mW/
°
C
Detector
Collector-Emitter Breakdown Voltage,
BV
CEO
........................................................... 70 V
Emitter-Collector Breakdown Voltage,
BV
ECO
............................................................. 7 V
Collector-Base Breakdown Voltage,
BV
CBO
......................................................... 70 V
Power Dissipation..................................... 200 mW
Derate Linearly from 25
°
C .....................2.6 mW/
°
C
Package
Isolation Test Voltage (t=1 sec.) .......5300 VAC
RMS
Total Package Dissipation at 25
°
C A
(LED + Detector).................................... 250 mW
Derate Linearly from 25
°
C .....................3.3 mW/
°
C
Creepage.................................................7 min mm
Clearance................................................7 min mm
Storage Temperature .................. –55
°
C to +150
°
C
Operating Temperature ...............–55
°
C to +100
°
C
Lead Soldering Time at 260
°
C ....................10 sec.
Characteristics
(0
°
C to 70
°
C unless otherwise specified)
Symbol Min. Typ. Max. Unit
Emitter
Forward Voltage V
F
1.2 1.5 V I
F
=20 mA
Forward Voltage V
F
1.0 1.2 V I
F
=1 mA
Breakdown Voltage V
F
620 VI
R
=10
µ
A
Reverse Current I
R
0.1 10
µ
AV
R
=6 V
T
A
=25
°
C
Detector
HFE 100 200 V
CE
=5 V
I
C
=100
µ
A
BV
CEO
70 V I
C
=100
µ
A
BV
ECO
710 VI
E
=100
µ
A
BV
CBO
70 90 V I
C
=10
µ
A
I
CEO
550nAV
CE
=10 V,
T
A
=25
°
C
Package
Base Current Transfer
Ratio CTR
CB
0.15 % I
F
=10 mA
V
CB
=10 V
V
CEsat
0.4 V I
F
=10 mA
I
C
=2 mA
DC Current Transfer Ratio
IL201
IL202
IL203
CTR
CTR
CTR
75
125
225
100
200
300
150
250
450
%
%
%
I
F
=10 mA,
V
CE
=10 V
DC Current Transfer Ratio
IL201
IL202
IL203
CTR
CTR
CTR
10
30
50
%
%
%
I
F
=1 mA,
V
CE
=10 V
Dimensions in inches (mm)
.010 (.25)
.014 (.35)
.110 (2.79
)
.150 (3.81
)
.130 (3.30)
.150 (3.81)
.020 (.051) min.
.300 (7.62)
typ.
.031 (0.80)
.035 (0.90)
.100 (2.54) typ.
.039
(1.00)
Min.
.018 (0.45)
.022 (0.55)
.
248 (6.30)
.
256 (6.50)
.335 (8.50)
.343 (8.70)
Pin One ID
6
5
4
12
3
18° typ.
.300 (7.62)
.347 (8.82)
4°
typ.
1
2
3
6
5
4
Base
Collector
Emitter
Anode
Cathode
NC
IL201/IL202/IL203
PHOTOTRANSISTOR
OPTOCOUPLER
5–2
IL201/202/203
Figure 1. Forward voltage versus forward current
Figure 2. Normalized non-saturated and
saturated CTR at T
A
=25
°
C versus LED current
Figure 3. Normalized non-saturated and
saturated CTR at T
A
=50
°
C versus LED current
Figure 4. Normalized non-saturated and
saturated CTR at T
A
=70
°
C versus LED current
100101.1
0.7
0.8
0.9
1.0
1.1
1.2
1.3
1.4
IF - Forward Current - mA
VF - Forward Voltage - V
Ta = -55°
C
Ta = 25°
C
Ta = 100°
C
100101.1
0.0
0.5
1.0
1.5
NCTR(SAT)
NCTR
IF - LED Current - mA
Normalized to:
Vce = 10V, IF = 10mA
Ta = 25°C
CTRce(sat) Vce = 0.4V
NCTR - Normalized CTR
100101.1
0.0
0.5
1.0
1.5
NCTR(SAT)
NCTR
IF - LED Current - mA
N ormali zed to:
Vce = 10V, IF = 1 0mA, Ta = 25°C
Ta = 5 0°C
CTRc e(sat) Vce = 0. 4V
NCTR - Nor m al i z ed CTR
100101.1
0.0
0.5
1.0
1.5
NCTR(SAT)
NCTR
IF - LED Current - mA
NCTR - Normali z ed CTR
Vc e = 10V , IF = 10mA
Ta = 25 °C
Ta = 70 °C
C TRce(s at) Vc e = 0.4V
Normalized t o:
Figure 5. Normalized non-saturated and saturated
CTR at T
A
=85
°
C versus LED current
Figure 6. Collector-emitter current versus temperature
and LED current
Figure 7. Collector-emitter leakage current versus
temperature
Figure 8. Normalized CTRcb versus LED current
and temperature
100101.1
0.0
0.5
1.0
1.5
NCTR(SAT)
NCTR
Normalized to:
Vce = 10V, IF = 10mA, Ta = 25°C
Ta = 85°C
CTRce(sat) Vce = 0.4V
IF - LED Current - mA
NCTR - Normalized CTR
6050403020100
0
5
10
15
20
25
30
35
50°C
70°C
85°C
IF - LED Current - mA
Ice - Collector Current - mA
25°C
100806040200-20
10
10
10
10
10
10
10
10
-2
-1
0
1
2
3
4
5
Ta - Ambient Temperature - °C
Iceo - Collector-Emitter - nA
TYPICAL
Vce = 10V
.1 1 10 100
0.0
0.5
1.0
1.5
25°C
50°C
70°C
IF - LED Current - mA
NCTRcb - Normalized CTRcb
Normalized to:
IF =10 mA
Vcb = 9.3 V
Ta = 25°C
5–3
IL201/202/203
Figure 12. Propagation delay versus collector load
resistor
Figure 13. Normalized non-saturated and saturated
CTRce versus LED current
Figure 14. Normalized non-saturated HFE versus
base current and temperature
100101.1
1
10
100
1000
1.0
1.5
2.0
2.5
R L - C o ll ecto r L o ad R esi st o r - KΩ
tpLH - Propaga tion Delay - µs
tpLH
tpHL
Ta = 2 5°C, IF = 1 0mA
Vcc = 5 V, Vth = 1.5 V
tpLH - Propa ga tion Delay - µs
.1 1 10 100
0.0
0.5
1.0
1.5
2.0
Vce = .4 V
Vce = 5
V
IF - LED Current - mA
NCTRce - Normalized CTRce
Ta = 25 °C
Vce = 5 V
IF = 1 mA
Normalized to:
1 10 100 1000
0.4
0.6
0.8
1.0
1.2
Ib - Base Current - µA
NHFE - Normalized HFE
Ib = 20µA
Vce = 10 V
Ta = 25°C
-20°
C
25°C 50°C
70°CNormalized to:
Figure 9. Collector base photocurrent versus LED
current
Figure 10. Normalized photocurrent versus If
and temperature
Figure 11. Normalized saturated HFE versus base
current and temperature
100
101.1
.01
.1
1
10
100
1000
g
IF - LED Current - mA
Icb - Collector Base
Photocurrent - µA
Icb = 1.0357 *IF ^1.3631
Ta = 25°C
100
101.1
.01
.1
1
10
NIB-Ta=20 °C
NIb,Ta=25°C
NIb,Ta=50°C
NIb,Ta=70°C
If -LED Current - mA
Normalized Photocurrent
Normalized to:
If = 10m a , Ta = 25°C
1 10 100 1000
0.0
0.5
1.0
1.5
2.0
25°
C
50°C
70°C
Ib - Base Current - µA
NHFE(sat) - Normalized
Saturated HFE
Normalized to:
Ib = 20µA
Vce = 10
V
Ta = 25 °C
Vce = 0.4 V
