LH1520AB, LH1520AAC, LH1520AACTR
www.vishay.com
Vishay Semiconductors
Dual 1 Form A Solid-State Relay
FEATURES
DIP
S1
S1'
• Dual channel (LH1500)
• Current limit protection
• Isolation test voltage 5300 V
RMS
S2
S2'
• Typical R
ON
20
• Load voltage 350 V
• Load current 150 mA
• High surge capability
• Clean bounce free switching
• Low power consumption
• Compliant to RoHS Directive 2002/95/EC and in
accordance to WEEE 2002/96/EC
S1
8
S1' S2
7
6
S2'
5
SMD
i179034_9
i179034_2
1
2
3
4
V
D E
APPLICATIONS
• General telecom switching
- On/off hook control
- Ring delay
- Dial pulse
- Ground start
- Ground fault protection
• Instrumentation
• Industrial controls
DESCRIPTION
The LH1520 dual 1 form A relays are SPST normally open
switches that can replace electromechanical relays in many
applications. They are constructed using a GaAIAs LED for
actuation control and an integrated monolithic die for the
switch output. The die, fabricated in a high-voltage
dielectrically isolated technology is comprised of a
photodiode array, switch control circuitry, and MOSFET
switches. In addition, the LH1520 SSRs employ current
limiting circuitry, enabling them to pass lightning surge
testing as per ANSI/TIA-968-B and other regulatory surge
requirements when overvoltage protection is provided.
AGENCY APPROVALS
UL1577:
file no. E52744 system code H, double
protection
CSA:
certification no. 093751
BSI/BABT: certification no. 7980
DIN EN:
60747-5-2 (VDE 0884)/60747-5-5 (pending),
available with option 1
FIMKO:
approval
ORDERING INFORMATION
L
H
1
5
2
0
A
ELECTR.
VARIATION
#
#
T
R
DIP
SMD
PART NUMBER
PACKAGE
CONFIG.
TAPE AND
REEL
7.62 mm
> 0.1 mm
PACKAGE
SMD-8, tubes
SMD-8, tape and reel
DIP-8, tubes
UL, CSA, BSI, FIMKO
LH1520AAC
LH1520AACTR
LH1520AB
Rev. 1.7, 25-Jul-11
1
For technical questions, contact:
optocoupleranswers@vishay.com
Document Number: 83818
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
LH1520AB, LH1520AAC, LH1520AACTR
www.vishay.com
Vishay Semiconductors
TEST CONDITION
SYMBOL
I
F
I
R
10 μA
I
L
50 μA
V
R
V
L
I
L
I
L
t = 100 ms
I
P
T
amb
T
stg
t = 10 s max.
t = 1 s, I
ISO
= 10 μA max.
(1)
ABSOLUTE MAXIMUM RATINGS
(T
amb
= 25 °C, unless otherwise specified)
PARAMETER
INPUT
LED continuous forward current
LED reverse voltage
OUTPUT
DC or peak AC load voltage
Continuous DC load current, one pole operating
Continuous DC load current, two poles
operating
Peak load current (single shot), form B
SSR
Ambient temperature range
Storage temperature range
Pin soldering temperature
(3)
Input to output isolation test voltage
Pole-to-pole isolation voltage (S1 to S2)
(dry air, dust free, at sea level)
Output power dissipation (continuous)
- 40 to + 85
- 40 to + 150
260
5300
1600
P
diss
600
°C
°C
°C
V
RMS
V
mW
350
150
110
(2)
VALUE
50
8
UNIT
mA
V
V
mA
mA
T
sld
V
ISO
Notes
• Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. Functional operation of the device is not
implied at these or any other conditions in excess of those given in the operational sections of this document. Exposure to absolute
maximum ratings for extended periods of the time can adversely affect reliability.
(1)
Breakdown occurs between the output pins external to the package.
(2)
Refer to current limit performance application note for a discussion on relay operation during transient currents.
(3)
Refer to reflow profile for soldering conditions for surface mounted devices (SMD). Refer to wave profile for soldering conditions for through
hole devices (DIP).
ELECTRICAL CHARACTERISTICS
(T
amb
= 25 °C, unless otherwise specified)
PARAMETER
INPUT
LED forward current, switch turn-on
LED forward current, switch turn-off
LED forward voltage
OUTPUT
On-resistance
Off-resistance
Current limit
Off-state leakage current
Output capacitance
Pole-to-pole capacitance (S1 to S2)
Switch offset
TRANSFER
Capacitance (input to output)
V
ISO
= 1 V
C
IO
1.1
pF
Note
• Minimum and maximum values are testing requirements. Typical values are characteristics of the device and are the result of engineering
evaluations. Typical values are for information only and are not part of the testing requirements.
I
F
= 5 mA, I
L
= 50 mA
I
F
= 0 mA, V
L
= ± 100 V
I
F
= 5 mA, t = 5 ms, V
L
= ± 6 V
I
F
= 0 mA, V
L
= ± 100 V
I
F
= 0 mA, V
L
= ± 350 V
I
F
= 0 mA, V
L
= 1 V
I
F
= 0 mA, V
L
= 50 V
I
F
= 5 mA
I
F
= 5 mA
V
OS
R
ON
R
OFF
I
LMT
I
O
I
O
C
O
C
O
55
10
0.5
0.15
12
0.5
230
20
300
270
0.32
370
200
1
25
G
mA
nA
μA
pF
pF
pF
μV
I
L
= 100 mA, t = 10 ms
V
L
= ± 300 V
I
F
= 10 mA
I
Fon
I
Foff
V
F
0.2
1.15
1
1.1
1.26
1.45
2
mA
mA
V
TEST CONDITION
SYMBOL
MIN.
TYP.
MAX.
UNIT
SWITCHING CHARACTERISTICS
(T
amb
= 25 °C, unless otherwise specified)
PARAMETER
Turn-on time
Turn-off time
TEST CONDITION
I
F
= 5 mA, I
L
= 50 mA
I
F
= 5 mA, I
L
= 50 mA
SYMBOL
t
on
t
off
MIN.
TYP.
1.4
0.7
MAX.
2
2
UNIT
ms
ms
Rev. 1.7, 25-Jul-11
2
For technical questions, contact:
optocoupleranswers@vishay.com
Document Number: 83818
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
LH1520AB, LH1520AAC, LH1520AACTR
www.vishay.com
TYPICAL CHARACTERISTICS
(T
amb
= 25 °C, unless otherwise specified)
Vishay Semiconductors
110
100
LED Reverse Current (µA)
Load Current (mA)
10
80
60
40
I
Fon
= 5.0 mA to
20 mA
8
6
T = - 40 °C
T = 25 °C
T = 85 °C
4
2
0
I
Fon
= 2.0 mA
I
= 3.0 mA
20
Fon
I
Fon
= 4.0 mA
0
- 40 - 20
0
20
40
60
80
0
ilh1520ab_03
8
16
24
32
40
48
ilh1520ab_00
Ambient Temperature (°C)
LED Reverse Voltage (V)
Fig. 1 - Recommended Operating Conditions
Fig. 4 - LED Reverse Current vs. LED Reverse Voltage
1.6
LED Current for Switch Turn-on (%)
Normalized to 25 °C
80
60
40
20
0
- 20
- 40
- 60
- 40
ilh1520ab_04
LED Forward Voltage (V)
1.5
I
F
= 50 mA
1.4
1.3
1.2
1.1
I
F
= 1 mA
I
F
= 2 mA
I
F
= 20 mA
I
L
= 100 mA
1.0
- 40
ilh1541at1_01
I
F
= 5 mA
I
F
= 10 mA
0
20
40
60
80
- 20
- 20
0
20
40
60
80
Ambient Temperature (°C)
Temperature (°C)
Fig. 2 - LED Voltage vs. Temperature
Fig. 5 - LED Current for Switch Turn-on vs. Temperature
120
LED Forward Current (mA)
100
80
60
40
20
0
0
ilh1520ab_02
1.25
1.2
I
L
= 100 mA
1.15
1.1
1.05
1
- 40
ilh1520ab_05
T = 85 °C
T = 25 °C
T = - 40 °C
0.5
1
1.5
2
LED Forward Voltage (V)
- 20
0
20
40
60
80
LED Forward Voltage (V)
Temperature (°C)
Fig. 3 - LED Forward Current vs. LED Forward Voltage
Fig. 6 - LED Dropout Voltage vs. Temperature
Rev. 1.7, 25-Jul-11
3
For technical questions, contact:
optocoupleranswers@vishay.com
Document Number: 83818
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
LH1520AB, LH1520AAC, LH1520AACTR
www.vishay.com
Vishay Semiconductors
40
Change in Current Limit (%)
Normalized to 25 °C
On-resistance Variation (%)
Normalized to I
F
= 5 mA
30
20
10
0
- 10
- 20
- 30
- 40
- 40
ilh1520ab_06
4
I
F
= 5.0 mA
t = 5.0 ms
V
L
= see elec. char.
I
L
= 50 mA
3
2
1
0
-1
- 20
0
20
40
60
80
0
ilh1520ab_09
4
8
12
16
20
Ambient Temperature (°C)
LED Forward Current (mA)
Fig. 7 - Current Limit vs. Temperature
Fig. 10 - Variation in On-resistance vs. LED Current
400
50
I
F
= 0 mA
40
T = 25 °C
T = 85 °C
Capacitance (pF)
I
F
= 5 mA
2
3
4
5
Load Current (mA)
300
T = - 40 °C
30
20
10
200
100
0
0
ilh1520ab_07
0
1
0 10 20 30 40 50 60 70 80 90 100
ilh1520ab_10
Load Voltage (V)
Applied Voltage (V)
Fig. 8 - Load Current vs. Load Voltage
Fig. 11 - Switch Capacitance vs. Applied Voltage
40
30
Change in R
on
(%)
Normalized to 25 °C
20
10
0
- 10
- 20
- 30
- 40
- 40
ilh1520ab_08
0.14
0.12
Insertion Loss (dB)
0.1
0.08
0.06
0.04
0.02
0
- 20
0
20
40
60
80
10
2
ilh1520ab_11
I
F
= 5 mA
I
L
= 50 mA
R
L
= 600
Ω
10
3
10
4
10
5
Temperature (°C)
Frequency (Hz)
Fig. 9 - On-Resistance vs. Temperature
Fig. 12 - Insertion Loss vs. Frequency
Rev. 1.7, 25-Jul-11
4
For technical questions, contact:
optocoupleranswers@vishay.com
Document Number: 83818
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
LH1520AB, LH1520AAC, LH1520AACTR
www.vishay.com
Vishay Semiconductors
1000
8
Change in Breakdown Voltage (%)
Normalized to 25 °C
500
Off-State Leakage Current (nA)
6
4
2
0
-2
-4
-6
-8
- 40
- 20
0
20
40
60
80
100
10
T = 85 °C
T = 70 °C
T = 50 °C
T = 25 °C
1
0.1
0.01
0
100
200
I
F
= 0 mA
300
400
ilh1520ab_12
Load Voltage (V)
ilh1520ab_15
Ambient Temperature (°C)
Fig. 13 - Leakage Current vs. Applied Voltage
Fig. 16 - Switch Breakdown Voltage vs. Temperature
120
Switch Offset Voltage (µV)
100
80
60
40
20
0
10
2
ilh1520ab_13
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
I
F
= 5.0 mA
Isolation (dB)
V
P
= 10 V
R
L
= 50
Ω
10
3
10
4
Frequency (Hz)
10
5
10
6
20
ilh1520ab_16
30
40
50
60
70
80
90
Ambient Temperature (°C)
Fig. 14 - Output Isolation
Fig. 17 - Switch Offset Voltage vs. Temperature
50
40
Load Current (µA)
30
T = - 40 °C
T = 25 °C
T = 85 °C
Switch Offset Voltage (µV)
270
360
450
0.6
0.5
0.4
0.3
0.2
0.1
0
0
90
180
0
ilh1520ab_17
20
10
0
I
F
= 0 mA
I
L
< 50 µA
5
10
15
20
25
ilh1520ab_14
Load Voltage (V)
LED Forward Current (mA)
Fig. 15 - Switch Breakdown Voltage vs. Load Current
Fig. 18 - Switch Offset Voltage vs. LED Current
Rev. 1.7, 25-Jul-11
5
For technical questions, contact:
optocoupleranswers@vishay.com
Document Number: 83818
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
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