LH1540AAB, LH1540AABTR, LH1540AT
www.vishay.com Vishay Semiconductors
Rev. 1.9, 25-Jul-11 1Document Number: 83833
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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1 Form A Solid-State Relay
DESCRIPTION
The LH1540 is robust, ideal for telecom and ground fault
applications. It is an SPST normally open switch (form A)
that replaces electromechanical relays in many applications.
It is 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, it
employs current-limiting circuitry which meets lightning
surge testing as per ANSI/TIA-968-B and other regulatory
voltage surge requirements when overvoltage protection is
provided.
FEATURES
• Current limit protection
• Isolation test voltage 5300 VRMS
• Typical RON 20 , max. 25
• Load voltage 350 V
• Load current 120 mA
• High surge capability
• Clean bounce free switching
• Low power consumption
• SMD lead available on tape and reel
• Compliant to RoHS Directive 2002/95/EC and in
accordance to WEEE 2002/96/EC
APPLICATIONS
• General telecom switching
• Instrumentation
• Industrial controls
Note
• See “solid-state relays” (application note 56)
6
S'SDC
1
5
2
4
3
SS'
i179041-2
DIP
SMD
AGENCY APPROVALS
UL1577: file no. E52744 system code H, double protection
CSA: certification no. 093751
BSI: certification no. 7979/7980
FIMKO: 25419
DIN EN: 60747-5-2 (VDE 0884)/60747-5-5 (pending),
available with option 1
ORDERING INFORMATION
LH1540###TR
PART NUMBER ELECTR.
VARIATION
PACKAGE
CONFIG.
TAPE AND
REEL
PACKAGE UL, CSA, BSI, FIMKO
SMD-6 LH1540AAB
SMD-6, tape and reel LH1540AABTR
DIP-6, thru hole LH1540AT
> 0.1 mm
7.62 mm
DIP SMD
LH1540AAB, LH1540AABTR, LH1540AT
www.vishay.com Vishay Semiconductors
Rev. 1.9, 25-Jul-11 2Document Number: 83833
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
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) Refer to current limit performance application note for a discussion on relay operation during transient currents.
(2) Refer to reflow profile for soldering conditions for surface mounted devices (SMD). Refer to wave profile for soldering conditions for through
hole devices (DIP).
Notes
• 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.
(1) No DC mode current limit available.
ABSOLUTE MAXIMUM RATINGS (Tamb = 25 °C, unless otherwise specified)
PARAMETER TEST CONDITION SYMBOL VALUE UNIT
INPUT
LED continuous forward current IF50 mA
LED reverse voltage IR 10 μA VR8V
OUTPUT
DC or peak AC load voltage IL 50 μA VL350 V
Continuous DC load current -
bidirectional operation IL120 mA
Continuous DC load current -
unidirectional operation IL250 mA
Peak load current (single shot) t = 100 ms IP(1) mA
SSR
Ambient temperature range Tamb - 40 to + 85 °C
Storage temperature range Tstg - 40 to + 150 °C
Pin soldering temperature (2) t = 10 s max. Tsld 260 °C
Input to output isolation voltage VISO 5300 VRMS
Output power dissipation (continuous) Pdiss 550 mW
ELECTRICAL CHARACTERISTICS (Tamb = 25 °C, unless otherwise specified)
PARAMETER TEST CONDITION SYMBOL MIN. TYP. MAX. UNIT
INPUT
LED forward current, switch turn-on IL = 100 mA, t = 10 ms IFon 12mA
LED forward current, switch turn-off VL = ± 300 V IFoff 0.2 0.9 mA
LED forward voltage IF = 10 mA VF1.15 1.26 1.45 V
OUTPUT
On-resistance AC/DC: pin 4 (±) to 6 (±) IF = 5 mA, IL = 50 mA RON 12 20 25
On-resistance DC: pin 4, 6 (+) to 5 (±) IF = 5 mA, IL = 100 mA RON 3 5 6.25
Off-resistance IF = 0 mA, VL = ± 100 V ROFF 0.5 5000 G
Current limit AC (1): pin 4 (±) to 6 (±) IF = 5 mA, VL = ± 6 V, t = 5 ms ILMT 175 210 250 mA
Off-state leakage current IF = 0 mA, VL = ± 100 V IO0.32 200 nA
IF = 0 mA, VL = ± 350 V IO1μA
Output capacitance pin 4 to 6 IF = 0 mA, VL = 1 V CO55 pF
IF = 0 mA, VL = 50 V CO10 pF
Switch offset IF = 5 mA VOS 0.15 μV
TRANSFER
Capacitance (input to output) VISO = 1 V CIO 0.8 pF
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 1.2 2 ms
Turn-off time IF = 5 mA, IL = 50 mA toff 0.5 2 ms
LH1540AAB, LH1540AABTR, LH1540AT
www.vishay.com Vishay Semiconductors
Rev. 1.9, 25-Jul-11 3Document Number: 83833
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
TYPICAL CHARACTERISTICS (Tamb = 25 °C, unless otherwise specified)
Fig. 1 - Recommended Operating Conditions
Fig. 2 - LED Voltage vs. Temperature
Fig. 3 - LED Dropout Voltage vs. Temperature
Fig. 4 - LED Current for Switch Turn-on vs. Temperature
SAFETY AND INSULATION RATINGS
PARAMETER TEST CONDITION SYMBOL VALUE UNIT
Climatic classification IEC 68 part 1 40/85/21
Pollution degree DIN VDE 0109 2
Tracking resistance
(comparative tracking index) Insulation group llla CTI 175
Highest allowable overvoltage Transient overvoltage VIOTM 8000 Vpeak
Max. working insulation voltage Recurring peak voltage VIORM 890 Vpeak
Insulation resistance at 25 °C
VIO = 500 V
RIS 1012
Insulation resistance at TSRIS 109
Insulation resistance at 100 °C RIS 1011
Partial discharge test voltage Methode a, Vpd = VIORM x 1.875 Vpd 1669 Vpeak
Safety limiting values -
maximum values allowed
in the event of a failure
Case temperature TSI 175 °C
Input current ISI 300 mA
Output power PSO 700 mW
Minimum external air gap (clearance) Measured from input terminals to output
terminals, shortest distance through air 7mm
Minimum external tracking (creepage) Measured from input terminals to output
terminals, shortest distance path along body 7mm
i1540at_00
80
60
0
40
120
100
20
0 20406080- 20- 40
Load Current (mA)
Ambient Temperature (°C)
IFON = 2.0 mA
IFON = 3.0 mA
IFON = 4.0 mA
IFON = 5.0 mA
to 20 mA
i1540at_01 TA - Ambient Temperature (°C)
LED Forward Voltage (V)
200- 20- 40
1.6
1.5
1.4
1.3
1.2
1.1
1.0
IF = 50 mA
IF = 20 mA
IF = 1.0 mA
IF = 2.0 mA IF = 5.0 mA
IF = 10 mA
40 60 80
i1540at_02
- 40 20
Ambient Temperature (°C)
1.20
1.15
1.10
0.95
1.00
40
1.05
8060- 20 0
Min.
Typ.
IL = 100 mA
LED Forward Voltage (V)
i1540at_03 Ambient Temperature (°C)
100
- 60
80
60
40
- 40
- 40 - 20 0 20 40 60 80
20
- 20
0
IL = 100 mA
LED Forward Current for Switch
Turn-on (%), Normalized to 25 °C
LH1540AAB, LH1540AABTR, LH1540AT
www.vishay.com Vishay Semiconductors
Rev. 1.9, 25-Jul-11 4Document Number: 83833
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. 5 - Current Limit vs. Temperature
Fig. 6 - On-resistance vs. Temperature
Fig. 7 - Variation in On-resistance vs. LED Current
Fig. 8 - Switch Capacitance vs. Applied Voltage
Fig. 9 - Insertion Loss vs. Frequency
Fig. 10 - Output Isolation
i1540at_04
- 40
40
10
30
20
0
- 20
- 10
- 40
- 30
- 20 0 20 40 60 80
Ambient Temperature (°C)
Change in Current Limit (%)
Normalized to 25 °C
IF = 5.0 mA
t = 5.0 ms
VL = see elec. char.
i1540at_05
- 40 - 20 0 20 40 60 80
50
10
30
20
40
- 20
- 30
- 10
- 40
0
Ambient Temperature (°C)
IL = 50 mA
Change in On-resistance (%)
Normalized to 25 °C
i1540at_06
0
1.5
0.5
- 0.5
1.0
0
4812
LED Forward Current (mA)
16 20
IL = 50 mA
AC/DC On-resistance Variation (%)
Normalized to Datasheet R
on
Specification at I
F
= 5.0 mA
i1540at_07
02040 8060 100
Applied Voltage (V)
80
50
70
60
40
20
0
10
30
IF = 0 mA
f = 1.0 MHz
Capacitance (pF)
i1540at_08
Frequency (Hz)
0.30
0
0.25
0.20
0.10
0.05
102103104105
0.15
RL = 600 Ω
Insertion Loss (dB)
i1540at_09 Frequency (Hz)
100
80
60
40
20
0
102103104105106107
Isolation (dB)
VP = 10 V
RL = 50 Ω
LH1540AAB, LH1540AABTR, LH1540AT
www.vishay.com Vishay Semiconductors
Rev. 1.9, 25-Jul-11 5Document Number: 83833
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. 11 - Leakage Current vs. Applied Voltage
Fig. 12 - Leakage Current vs.
Applied Voltage at Elevated Temperatures
Fig. 13 - Switch Breakdown Voltage vs. Temperature
Fig. 14 - Switch Offset Voltage vs. Temperature
Fig. 15 - Switch Offset Voltage vs. LED Current
Fig. 16 - Turn-on Time vs. Temperature
0
10
20
30
40
50
60
70
80
0 100 200 300 400
Load Voltage (V)
17321
Off-state Leakage Current (nA)
T = 25 °C
0
20
40
60
80
100
120
140
0 100 200 300 400
Load Voltage (V)
17322
Off-state Leakage Current (nA)
T = 85 °C
T = 75 °C
T = 50 °C
i1540at_12
- 40 - 20 0 20 40 60 80
Ambient Temperature (°C)
8
0
4
2
6
- 2
- 6
- 8
- 4
Change in Breakdown Voltage (%)
Normalized to 25 °C
i1540at_13
20 40
Ambient Temperature (°C)
3.5
0
50 706030
3.0
1.5
2.0
2.5
0.5
1.0
80 90
IF = 5.0 mA
Switch Offset Voltage (µV)
i1540at_15
- 40 - 20 0 20 40 60 80
Ambient Temperature (°C)
60
50
- 20
- 30
- 10
0
10
20
30
40
- 40
IF = 5.0 mA
IL = 50 mA
Change in Turn-on Time (%)
Normalized to 25 °c
LH1540AAB, LH1540AABTR, LH1540AT
www.vishay.com Vishay Semiconductors
Rev. 1.9, 25-Jul-11 6Document Number: 83833
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. 17 - Turn-off Time vs. Temperature
Fig. 18 - Turn-on Time vs. LED Current
Fig. 19 - Turn-off Time vs. LED Current
PACKAGE DIMENSIONS in millimeters
i1540at_16
120
40
- 40
100
80
60
20
- 20
- 60
0
- 40 - 20
- 80
160
140
Ambient Temperature (°C)
IF = 5.0 mA
IL = 50 mA
Change in Turn-off Time (%)
Normalized to 25 °C
020 40 60 80
i1540at_17
01020
LED Forward Current (mA)
10
8
6
0
2
30
4
5040
- 40 °C
IL = 50 mA
Turn-on Time (ms)
25 °C
85 °C
i1540at_18
1.4
1.2
1.0
0.2
30 5040
0.8
0.6
0.4
IL = 50 mA
LED Forward Current (mA)
- 40 °C
25 °C
85 °C
Turn-off Time (ms)
010 20
0.35
0.25
3.81
2.79
3.81
3.30
0.051 min.
7.62 typ.
0.9
0.8
2.54 typ.
1 min.
0.55
0.45
6.5
6.3
8.7
8.5
Pin one ID
6
5
4
12
3
18° typ.
8.82
7.62
4° typ.
DIP
ISO method A
i178001
LH1540AAB, LH1540AABTR, LH1540AT
www.vishay.com Vishay Semiconductors
Rev. 1.9, 25-Jul-11 7Document Number: 83833
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
PACKAGE MARKING
Note
• Tape and reel suffix (TR) is not part of the package marking.
8.71
8.51
6.50
6.30
Pin one ID
0.99 min.
3.81
3.30
2.54
1.33
1.22
4°
1.016
0.508
0.25
0.10
0.31
0.20
7.62 typ.
10.03
9.63
3° to 7°
18°
8 min.
1.27 typ.
SMD
ISO method A
i178002
2.54 R 0.25
1.78
0.76
1.52
8 min.
11.05
LH1540
V YWW H 68
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www.vishay.com Vishay
Revision: 12-Mar-12 1Document Number: 91000
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