Datasheet

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Document Number: 83629
4 Rev. 2.0, 29-Mar-11
This document is subject to change without notice.
THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT
www.vishay.com/doc?91000
IL420, IL4208
Vishay Semiconductors
Optocoupler, Phototriac Output,
High dV/dt, Low Input Current
Note
• As per IEC60747-5-2, § 7.4.3.8.1, this optocoupler is suitable for “safe electrical insulation” only within the safety ratings. Compliance with
the safety ratings shall be ensured by means of protective circuits.
TYPICAL CHARACTERISTICS (T
amb
= 25 °C, unless otherwise specified)
Fig. 1 - Forward Voltage vs. Forward Current
Fig. 2 - Peak LED Current vs. Duty Factor, 
Fig. 3 - Maximum LED Power Dissipation
Fig. 4 - Typical Output Characteristics
SAFETY AND INSULATION RATINGS (T
amb
= 25 °C, unless otherwise specified)
PARAMETER TEST CONDITION SYMBOL MIN. TYP. MAX. UNIT
Climatic classification
(according to IEC68 part 1)
55/100/21
Comparative tracking index CTI 175 399
V
IOTM
8000 V
V
IORM
630 V
P
SO
500 mW
I
SI
250 mA
T
SI
175 °C
Creepage distance Standard DIP-8 7 mm
Clearance distance Standard DIP-8 7 mm
Creepage distance 400 mil DIP-8 8 mm
Clearance distance 400 mil DIP-8 8 mm
Insulation thickness For IL4208 only 0.4 mm
iil420_01
1001010.1
0.7
0.8
0.9
1.0
1.1
1.2
1.3
1.4
I
F
- Forward Current (mA)
V
F
- Forward Voltage (V)
T
amb
= - 55 °C
T
amb
= 25 °C
T
amb
= 85 °C
iil420_02
10
-6
10
-5
10
-4
10
-3
10
-2
10
-1
10
0
10
1
10
100
100
0
10 000
t- LED Pulse Duration (s)
I
F(pk)
- Peak LED Current (mA)
0.005
0.05
0.02
0.01
0.1
0.2
0.5
Duty factor
t
τ
DF = /t
τ
iil420_03
100806040200- 20- 40- 60
0
50
100
150
T
amb
- Ambient Temperature (°C)
LED - Power (mW)
10
3
10
2
10
1
5
5
5
10
0
012 43
iil420_04
I
T
= f(V
T
),
parameter: T
j
T
j
= 25 °C
T
j
= 100 °C
I
T
(mA)
V
T
(V)