LH1550AAB1, LH1550AAB1TR, LH1550AT1
www.vishay.com Vishay Semiconductors
Rev. 2.0, 05-Jul-2018 1Document Number: 83841
For technical questions, contact: optocoupleranswers@vishay.com
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1 Form A Solid-State Relay (Normally Open)
DESCRIPTION
The LH1550 is a single channel solid-state relay in a 6 pin
package. It is a SPST normally open switch (1 Form A) that
replaces electromechanical relays in many applications. It is
constructed using a GaAlAs LED for actuation control and
MOSFET switches for the output. In addition, it employs
current-limiting circuitry to provide overvoltage protection.
FEATURES
• Current limit protection
• Isolation test voltage 5300 VRMS
• Typical RON 22 Ω
• Load voltage 350 V
• Load current 100 mA
• Clean bounce free switching
• Low power consumption
• Material categorization: for definitions of compliance
please see www.vishay.com/doc?99912
APPLICATIONS
• General telecom switching
• Security equipment
• Instrumentation
• Industrial controls
AGENCY APPROVALS
• UL1577, file no. E52744
S
2
S
1
NC
A
C
6
4
5
1
3
2
ORDERING INFORMATION
LH1550###TR
PART NUMBER ELECTR.
VARIATION
PACKAGE
CONFIG.
TAPE AND
REEL
PACKAGE UL
SMD-6, tube LH1550AAB1
SMD-6, tape and reel LH1550AAB1TR
DIP-6, tube LH1550AT1
7.62 mm
DIP-6 SMD-6
> 0.1 mm
LH1550AAB1, LH1550AAB1TR, LH1550AT1
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Rev. 2.0, 05-Jul-2018 2Document Number: 83841
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Note
• 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
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
ABSOLUTE MAXIMUM RATINGS (Tamb = 25 °C, unless otherwise specified)
PARAMETER CONDITION SYMBOL VALUE UNIT
INPUT
IRED continuous forward current IF50 mA
IRED reverse voltage VR5V
Input power dissipation Pdiss 80 mW
OUTPUT
DC or peak AC load voltage VL350 V
Continuous load current (bidirectional operation) IL100 mA
SSR output power dissipation (continuous) Pdiss 550 mW
SSR
Ambient temperature range Tamb -40 to +85 °C
Storage temperature range Tstg -40 to +150 °C
Soldering temperature t = 10 s max. Tsld 260 °C
ELECTRICAL CHARACTERISTICS (Tamb = 25 °C, unless otherwise specified)
PARAMETER TEST CONDITION SYMBOL MIN. TYP. MAX. UNIT
INPUT
IRED forward current, switch turn-on IL = 100 mA, t = 10 ms IFon -0.32mA
IRED forward current, switch turn-off VL = 350 V IFoff 0.001 0.15 - mA
IRED forward voltage IF = 10 mA VF1.15 1.36 1.45 V
OUTPUT
On-resistance (AC/DC configuration) IF = 5 mA, IL = 50 mA RON -2250Ω
Off-resistance IF = 0 mA, VL = ± 100 V ROFF 0.5 5000 - GΩ
Off-state leakage current IF = 0 mA, VL = ± 100 V IO-< 1200nA
IF = 0 mA, VL = ± 350 V IO- 6 1000 nA
Output capacitance IF = 0 mA, VL = 1 V, 1 MHz CO-39-pF
IF = 0 mA, VL = 50 V, 1 MHz CO-6-pF
Current limit IF = 5 mA, t = 5 ms, VL = ± 6 V Ilimit 170 300 450 mA
TRANSFER
Capacitance (input to output) VISO = 1 V CIO -0.4-pF
LH1550AAB1, LH1550AAB1TR, LH1550AT1
www.vishay.com Vishay Semiconductors
Rev. 2.0, 05-Jul-2018 3Document Number: 83841
For technical questions, contact: optocoupleranswers@vishay.com
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
Fig. 1 - Timing Schematic
Note
• As per IEC 60747-5-5, § 7.4.3.8.2, 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
SWITCHING CHARACTERISTICS (Tamb = 25 °C, unless otherwise specified)
PARAMETER TEST CONDITION SYMBOL MIN. TYP. MAX. UNIT
Turn-on time IF = 5 mA, IL = 50 mA ton -0.133 ms
Turn-off time IF = 5 mA, IL = 50 mA toff -0.053 ms
SAFETY AND INSULATION RATINGS
PARAMETER TEST CONDITION SYMBOL VALUE UNIT
Climatic classification According to IEC 68 part 1 40 / 85 / 21
Pollution degree According to DIN VDE 0109 2
Comparative tracking index Insulation group IIIa CTI 175
Maximum rated withstanding isolation voltage According to UL1577, t = 1 min VISO 5300 VRMS
Maximum transient isolation voltage According to DIN EN 60747-5-5 VIOTM 8000 Vpeak
Maximum repetitive peak isolation voltage According to DIN EN 60747-5-5 VIORM 890 Vpeak
Isolation resistance VIO = 500 V, Tamb = 25 °C RIO ≥ 1012 Ω
VIO = 500 V, Tamb = 100 °C RIO ≥ 1011 Ω
Output safety power PSO 700 mW
Input safety current ISI 240 mA
Safety temperature TS175 °C
Creepage distance ≥ 7mm
Clearance distance ≥ 7mm
Insulation thickness DTI ≥ 0.4 mm
Input to output test voltage, method B VIORM x 1.875 = VPR, 100 % production test
with tM = 1 s, partial discharge < 5 pC VPR 1669 Vpeak
Input to output test voltage, method A VIORM x 1.6 = VPR, 100 % sample test
with tM = 10 s, partial discharge < 5 pC VPR 1424 Vpeak
6
Output
VL
52
4
3
1
A
C
Input
Output
90 %
10 %
ton toff
LH1550AAB1, LH1550AAB1TR, LH1550AT1
www.vishay.com Vishay Semiconductors
Rev. 2.0, 05-Jul-2018 4Document Number: 83841
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Fig. 2 - Safety Power Dissipation vs. Ambient Temperature Fig. 3 - Safety Input Current vs. Ambient Temperature
TYPICAL CHARACTERISTICS (Tamb = 25 °C, unless otherwise specified)
Fig. 4 - Maximum Load Current vs. Ambient Temperature
Fig. 5 - Forward Voltage vs. Ambient Temperature
Fig. 6 - Forward Current vs. Forward Voltage
Fig. 7 - Normalized Forward Current for Switch Turn-On vs.
Ambient Temperature
0
200
400
600
800
-50-250 255075100125150175
PSO-Output Safety Power (mW)
Tamb - Ambient Temperature (°C)
0
50
100
150
200
250
-50-250 255075100125150175
ISI- Input Safety Current (mA)
Tamb - Ambient Temperature (°C)
0
20
40
60
80
100
120
140
-40-200 20406080100
I
L
- Load Current (mA)
T
amb
- Ambient Temperature (°C)
I
F
> 5 mA
1.0
1.1
1.2
1.3
1.4
1.5
1.6
1.7
-40-200 20406080100
VF- Forward Voltage (V)
Tamb - Ambient Temperature (°C)
IF= 10 mA
IF= 5 mA
IF= 2 mA
0
10
20
30
40
50
60
0 0.5 1.0 1.5 2.0
IF- Forward Current (mA)
VF- Forward Voltage (V)
T = 85 °C
T = 25 °C
T = -40 °C
0
0.5
1.0
1.5
2.0
2.5
-40-200 20406080100
Normalized Forward Current
for Switch Turn-On
Tamb - Ambient Temperature (°C)
Normalized to Tamb = 25 °C
IL= 100 mA
LH1550AAB1, LH1550AAB1TR, LH1550AT1
www.vishay.com Vishay Semiconductors
Rev. 2.0, 05-Jul-2018 5Document Number: 83841
For technical questions, contact: optocoupleranswers@vishay.com
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
Fig. 8 - Normalized On-Resistance vs. Ambient Temperature
Fig. 9 - Switch Capacitance vs. Applied Voltage
Fig. 10 - Off-State Leakage Current vs. Load Voltage
Fig. 11 - Turn-On Time vs. Forward Current
Fig. 12 - Normalized Turn-On Time vs. Ambient Temperature
Fig. 13 - Turn-Off Time vs. Forward Current
0
0.5
1.0
1.5
2.0
-40-200 20406080100
Normalized On-Resistance
T
amb
- Ambient Temperature (°C)
Normalized to Tamb = 25 °C
IF= 5.0 mA
IL= 50 mA
0
10
20
30
40
50
60
0 102030405060
Switch Capacitance (pF)
Applied Voltage (V)
IF= 0 mA
f = 1 MHz
0.01
0.1
1
10
100
0 100 200 300
Off-State Leakage Current (nA)
V
L
- Load Voltage (V)
T = 85 °C
T = 25 °C
T = -40 °C
IF= 0 mA
0
0.5
1.0
1.5
2.0
0 1020304050
Turn-On Time (ms)
IF- Forward Current (mA)
T = 85 °C
T = 25 °C
T = -40 °C
IL= 50 mA
0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
-40 -20 0 20 40 60 80 100
Normalized Turn-On Time
Tamb - Ambient Temperature (°C)
Normalized to Tamb = 25 °C
IF= 5 mA
0
0.04
0.08
0.12
0.16
0.20
0 1020304050
Turn-Off Time (ms)
IF- Forward Current (mA)
T = 85 °C
T = 25 °C
T = -40 °C
IL= 50 mA
LH1550AAB1, LH1550AAB1TR, LH1550AT1
www.vishay.com Vishay Semiconductors
Rev. 2.0, 05-Jul-2018 6Document Number: 83841
For technical questions, contact: optocoupleranswers@vishay.com
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
Fig. 14 - Normalized Turn-Off Time vs. Ambient Temperature
PACKAGE DIMENSIONS (in millimeters)
SMD-6
0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
-40 -20 0 20 40 60 80 100
Normalized Turn-Off Time
Tamb - Ambient Temperature (°C)
Normalized to Tamb = 25 °C
IF= 5.0 mA
7.60 max.
7.25 ± 0.10
0.79 typ.
1.00 ± 0.10
2.54 nom.
2 x 2.54 = 5.08
3.55 ± 0.250.25 ± 0.20
9.80 ± 0.25
6.65 ± 0.15
7.62 typ.
0.25 ± 0.10
Leads coplanarity
0.1 max.
8.00 min.
0.60 min.
Pin one I.D.
654
123
8.0 min.
11.00
1.50
2.54
1.50
5.08
Recommended footprint
LH1550AAB1, LH1550AAB1TR, LH1550AT1
www.vishay.com Vishay Semiconductors
Rev. 2.0, 05-Jul-2018 7Document Number: 83841
For technical questions, contact: optocoupleranswers@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
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DIP-6
Fig. 15 - Package Drawings
PACKAGE MARKING
Fig. 16 - LH1550
Note
• Tape and reel suffix (TR) is not part of the package marking
7.60 max.
2 x 2.54 = 5.08
7.25 ± 0.10
2.54 nom.
0.50 ± 0.10
1.00 ± 0.10
0.79 typ.
3.55 ± 0.25
0.70 ± 0.20
654
123
Pin one I.D.
6.65 ± 0.15
7.62 typ.
3.04 ± 0.25
6.09 ± 0.25
3° to 9°
0.25 ± 0.10
LH1550
V YWW 68
LH1550AAB1, LH1550AAB1TR, LH1550AT1
www.vishay.com Vishay Semiconductors
Rev. 2.0, 05-Jul-2018 8Document Number: 83841
For technical questions, contact: optocoupleranswers@vishay.com
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
PACKING INFORMATION (in millimeters)
Fig. 17 - Tape and Reel Packing
SOLDER PROFILES
Fig. 18 - Wave Soldering Double Wave Profile
According to J-STD-020 for DIP Devices
Fig. 19 - Lead (Pb)-free Reflow Solder Profile
According to J-STD-020 for SMD Devices
HANDLING AND STORAGE CONDITIONS
ESD level: HBM class 2
Floor life: unlimited
Conditions: Tamb < 30 °C, RH < 60 %
Moisture sensitivity level 1, according to J-STD-020
TAPE AND REEL PACKING
TYPE UNITS/REEL
SMD-6 1000
TUBE PACKING
TYPE UNITS/TUBE TUBES/BOX UNITS/BOX
SMD-6 50 40 2000
DIP-6 50 40 2000
Note:
• Cummulative tolerance of 10 spocket holes is 0.20 mm
C
L
0.35 ± 0.05
7.77 ± 0.1
3.9 ± 0.1
4.4 ± 0.1
1.75 ± 0.1
7.77 ± 0.1
12.0 ± 0.1 10.3 ± 0.1
1.5 ± 0.1
PIN 1
2.0 ± 0.1 4.0 ± 0.1 1.5 ± 0.1
7.5 ± 0.1
16.0 ± 0.3
948626
10
100
1000
10000
0
100
200
300
050 100 150 200 250
Axis Title
1st line
2nd line
2nd line
Temperature (°C)
Time (s)
50
150
250
2 K/s
Second
wave
First wave
5 s
Full line: typical
Dotted lines:
process limits
Lead temperature
235 °C to
260 °C
100 °C to
130 °C
ca. 200 K/s
Forced cooling
ca. 5 K/s
ca. 2 K/s
240 °C
Max. 260 °C
217 °C
255 °C
19841
10
100
1000
10000
0
100
200
300
0 50 100 150 200 300
Axis Title
1st line
2nd line
2nd line
Temperature (°C)
Time (s)
50
150
250
250
245 °C
Max. 100 s
Max. 30 s
Max. 120 s
Max. ramp down 6 °C/s
Max. ramp up 3 °C/s
Footprint and Schematic Information
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Rev. 1.0, 09-May-17 1Document Number: 84491
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Footprint and Schematic Information
for LH1550AAB1, LH1550AAB1TR, LH1550AT1
The footprint and schematic symbols for the following parts can be accessed using the associated links. They are available in
Eagle, Altium, KiCad, OrCAD / Allegro, Pulsonix, and PADS.
Note that the 3D models for these parts can be found on the Vishay product page.
For technical issues and product support, please contact optocoupleranswers@vishay.com.
PART NUMBER FOOTPRINT / SCHEMATIC
LH1550AAB1 www.snapeda.com/parts/LH1550AAB1/Vishay/view-part
LH1550AAB1TR www.snapeda.com/parts/LH1550AAB1TR/Vishay/view-part
LH1550AT1 www.snapeda.com/parts/LH1550AT1/Vishay/view-part
i179041-2
DIP
SMD
Legal Disclaimer Notice
www.vishay.com Vishay
Revision: 08-Feb-17 1Document Number: 91000
Disclaimer
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“Vishay”), disclaim any and all liability for any errors, inaccuracies or incompleteness contained in any datasheet or in any other
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