LAA125L
350V, 150mA Dual Single-Pole
Current Limiting, Normally Open Relays
INTEGRATED CIRCUITS DIVISION
Parameter
Load Voltage, AC/DC
Load Current
On-Resistance (max)
Ratings
350
150
18
Units
VP
mArms / mADC
Features
• Current Limiting
• 3750Vrms Input/Output Isolation
• Low Drive Power Requirements
• Higher Reliability than Electromechanical Relays
• No EMI/RFI Generation
• Small 8 Pin Packages
• Surface Mount and Tape & Reel Versions Available
• Flammability Rating UL 94 V-0
Applications
• Telecommunications
• Instrumentation
• Multiplexers
• Data Acquisition
• Electronic Switching
• I/O Subsystems
• Medical Equipment-Patient/Equipment Isolation
• Meters (Watt-Hour, Water, Gas)
• Security
• Industrial Controls
Description
LAA125L is a dual normally open (1-Form-A) Solid
State Relay that has two independently controlled,
optically coupled MOSFET switches with an
additional current limiting circuit. The optically coupled
combination of MOSFET switches and photovoltaic die
provide 3750Vrms of input/output isolation.
The optically coupled outputs, which use patented
OptoMOS architecture, are controlled by a highly
efficient infrared LED.
This dual switch OptoMOS relay provides a more
compact design solution than discrete single-pole
relays in a variety of applications, and saves board
space by incorporating both switches in a single 8-Pin
package.
Approvals
• UL Recognized Component: File # E76270
• CSA Certified Component: Certificate # 1175739
• TUV EN 62368-1: Certificate # B 082667 0008
Ordering Information
Part #
LAA125L
LAA125LS
LAA125LSTR
LAA125PL
LAA125PLTR
Description
8 Pin DIP (50/Tube)
8 Pin Surface Mount (50/Tube)
8 Pin Surface Mount (1,000/Reel)
8 Pin SOIC (Flatpack) (50/Tube)
8 Pin SOIC (Flatpack) (1,000/Reel)
Pin Configuration
+ Control - Switch #1
– Control - Switch #1
+ Control - Switch #2
– Control - Switch #2
1
8
2
7
3
6
4
5
Load - Switch #1
Load - Switch #1
Load - Switch #2
Load - Switch #2
Switching Characteristics of
Normally Open (Form A) Devices
Form-A
IF
90%
10%
ILOAD
ton
DS-LAA125L-R14
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toff
1
INTEGRATED CIRCUITS DIVISION
LAA125L
Absolute Maximum Ratings @25ºC
Parameter
Blocking Voltage
Reverse Input Voltage
Input Control Current
Peak (10ms)
Input Power Dissipation 1
Total Power Dissipation 2
Isolation Voltage, Input to Output
Operational Temperature, Ambient
Storage Temperature
1
2
Ratings
350
5
50
1
150
800
3750
-40 to +85
-40 to +125
Absolute Maximum Ratings are stress ratings. Stresses in
excess of these ratings can cause permanent damage to
the device. Functional operation of the device at conditions
beyond those indicated in the operational sections of this
data sheet is not implied.
Units
VP
V
mA
A
mW
mW
Vrms
°C
°C
Typical values are characteristic of the device at +25°C,
and are the result of engineering evaluations. They are
provided for information purposes only, and are not part of
the manufacturing testing requirements.
Derate linearly 1.33 mW / ºC
Derate output power linearly 6.67 mW / ºC
Electrical Characteristics @25ºC (Unless Otherwise Noted)
Parameter
Output Characteristics
Blocking Voltage
Load Current,
Continuous 1
Peak
Load Current Limiting
On-Resistance 2
Off-State Leakage Current
Switching Speeds
Turn-On
Turn-Off
Output Capacitance
Input Characteristics
Input Control Current to Activate
Input Control Current to Deactivate
Input Voltage Drop
Reverse Input Current
Input to Output Capacitance
1
2
2
Conditions
Symbol
Min
Typ
Max
Units
IL=1A
VDRM
350
-
-
VP
10ms max
IL=Load Current
VL=350VP
IL
ILPK
ICL
RON
ILEAK
±190
-
±235
-
150
±400
±280
18
1
mArms / mADC
mAP
mA
A
IF=0mA, VL=50V, f=1MHz
ton
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COUT
-
50
5
5
-
IL=170mA
IF=5mA
VR=5V
VIO=0V, f=1MHz
IF
VF
IR
CIO
0.4
0.9
-
0.7
1.36
3
5
1.5
10
-
IF=5mA, VL=10V
ms
pF
mA
mA
V
A
pF
If both poles operate, then the load current must be derated so that it does not exceed the package power dissipation value.
Measurement taken within one second of on-time.
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R14
INTEGRATED CIRCUITS DIVISION
LAA125L
PERFORMANCE DATA*
Typical LED Forward Voltage Drop
(N=50, IF=5mA)
30
Typical Turn-On Time
(N=50, IF=5mA, IL=150mA)
20
15
10
Device Count (N)
Device Count (N)
Device Count (N)
25
20
15
10
5
5
0
0
1.364
20
15
10
5
0
1.366
1.368
1.370
1.372
LED Forward Voltage Drop (V)
0.80
Typical IF for Switch Operation
(N=50, IL=150mA)
45
Typical Turn-Off Time
(N=50, IF=5mA, IL=150mA)
25
0.85
0.90 0.95 1.00 1.05
Turn-On Time (ms)
0.310 0.318 0.326 0.334 0.342 0.350 0.358
Turn-Off Time (ms)
1.10
Typical On-Resistance Distribution
(N=50, IF=5mA, IL=150mA)
20
Typical Blocking Voltage Distribution
(N=50)
20
30
25
20
15
10
Device Count (N)
35
Device Count (N)
Device Count (N)
40
15
10
5
15
10
5
5
0
0
0.17
0.18
0.19
0.20
0.21
LED Current (mA)
0
0.22
9.4
Typical LED Forward Voltage Drop
vs. Temperature
396
10.0
IF=10mA
IF=5mA
IF=2mA
1.3
1.2
1.1
0.39
1.0
0.38
0.8
0.6
0.4
0.2
0.24
-25
0
25
50
Temperature (ºC)
75
100
0
Typical IF for Switch Operation
vs. Temperature
(IL=80mA)
20
30
40
LED Forward Current
Turn-On Time (ms)
0.18
0.16
0.14
0
20
40
60
Temperature (ºC)
80
100
0.36
0.35
0.34
0
Typical Turn-On Time
vs. Temperature
(IF=5mA, IL=80mA)
1.4
1.2
1.0
0.8
0.4
-40
-20
0
20
40
60
Temperature (ºC)
10
20
30
40
LED Forward Current (mA)
80
100
50
Typical Turn-Off Time
vs. Temperature
(IF=5mA, IL=80mA)
0.50
0.6
-20
420
0.37
50
1.6
0.20
0.12
-40
10
1.8
0.22
404 408 412 416
Blocking Voltage (VP)
0.33
0.0
1.0
400
Typical Turn-Off Time
vs. LED Forward Current
1.2
Turn-Off Time (ms)
Turn-On Time (ms)
1.6
-50
LED Forward Current (mA)
9.9
Turn-Off Time (ms)
LED Forward Voltage Drop (V)
1.7
1.4
9.6
9.7
9.8
On-Resistance (:)
Typical Turn-On Time
vs. LED Forward Current
1.8
1.5
9.5
0.45
0.40
0.35
0.30
0.25
0.20
-40
-20
0
20
40
60
Temperature (ºC)
80
100
*Unless otherwise noted, data presented in these graphs is typical of device operation at 25ºC.
R14
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3
INTEGRATED CIRCUITS DIVISION
LAA125L
PERFORMANCE DATA*
150
Load Current (mA)
On-Resistance (:)
14
12
10
8
6
4
-40
-20
0
20
40
60
Temperature (ºC)
80
50
0
-50
-100
-150
-1.5
100
Typical Blocking Voltage
vs. Temperature
0.025
440
Leakage Current (PA)
Blocking Voltage (VP)
450
430
420
410
400
390
-40
-20
0
20
40
60
Temperature (ºC)
80
100
160
140
130
120
110
100
90
80
-1.0
-0.5
0.0
0.5
Load Voltage (V)
1.0
-40
1.5
Typical Leakage vs. Temperature
Measured Across Pins 5&6, 7&8
(VL=350V)
350
0.020
0.015
0.010
0.005
0.000
-40
Maximum Load Current
vs. Temperature
(IF=5mA)
150
100
Current Limit (mA)
16
Typical Load Current vs. Load Voltage
(IF=5mA)
Load Current (mA)
Typical On-Resistance
vs. Temperature
(IF=5mA, IL=150mA)
-20
0
20
40
60
Temperature (ºC)
80
100
-20
0
20
40
60
Temperature (ºC)
80
100
Typical Current Limiting
vs. Temperature
(IF=5mA, VL=8V)
300
250
200
150
100
-40
-20
0
20
40
60
Temperature (ºC)
80
100
*Unless otherwise noted, data presented in these graphs is typical of device operation at 25ºC.
4
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R14
INTEGRATED CIRCUITS DIVISION
LAA125L
Manufacturing Information
Moisture Sensitivity
All plastic encapsulated semiconductor packages are susceptible to moisture ingression. IXYS Integrated
Circuits classifies its plastic encapsulated devices for moisture sensitivity according to the latest version of
the joint industry standard, IPC/JEDEC J-STD-020, in force at the time of product evaluation. We test all of
our products to the maximum conditions set forth in the standard, and guarantee proper operation of our devices
when handled according to the limitations and information in that standard as well as to any limitations set forth in the
information or standards referenced below.
Failure to adhere to the warnings or limitations as established by the listed specifications could result in reduced product
performance, reduction of operable life, and/or reduction of overall reliability.
This product carries a Moisture Sensitivity Level (MSL) classification as shown below, and should be handled
according to the requirements of the latest version of the joint industry standard IPC/JEDEC J-STD-033.
Device
Moisture Sensitivity Level (MSL) Classification
LAA125LS
MSL 1
LAA125PL
MSL 3
ESD Sensitivity
This product is ESD Sensitive, and should be handled according to the industry standard JESD-625.
Soldering Profile
Provided in the table below is the IPC/JEDEC J-STD-020 Classification Temperature (TC) and the maximum total dwell
time (tP) in all reflow processes that the body temperature of these surface mount devices may be (TC - 5)°C or greater.
The device’s body temperature must not exceed the Classification Temperature at any time during reflow soldering
processes.
Device
Classification Temperature (Tc)
Dwell Time (tP)
Max Reflow Cycles
LAA125LS
LAA125PL
250ºC
245ºC
30 seconds
30 seconds
3
3
For through-hole devices, the maximum pin temperature and maximum dwell time through all solder waves is
provided in the table below. Dwell time is the interval beginning when the pins are initially immersed into the solder
wave until they exit the solder wave. For multiple waves, the dwell time is from entering the first wave until exiting the
last wave. During this time, pin temperatures must not exceed the maximum temperature given in the table below.
Body temperature of the device must not exceed the limit shown in the table below at any time during the soldering
process.
Device
LAA125L
Maximum Pin Temperature
260ºC
Maximum Body Temperature
250ºC
Maximum Dwell Time
10 seconds*
Wave Cycles
1
*Total cumulative duration of all waves.
Board Wash
IXYS Integrated Circuits recommends the use of no-clean flux formulations. Board washing to reduce or remove flux
residue following the solder reflow process is acceptable provided proper precautions are taken to prevent damage to
the device. These precautions include but are not limited to: using a low pressure wash and providing a follow up bake
cycle sufficient to remove any moisture trapped within the device due to the washing process. Due to the variability
of the wash parameters used to clean the board, determination of the bake temperature and duration necessary
to remove the moisture trapped within the package is the responsibility of the user (assembler). Cleaning or drying
methods that employ ultrasonic energy may damage the device and should not be used. Additionally, the device must
not be exposed to halide flux or solvents.
R14
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5
INTEGRATED CIRCUITS DIVISION
LAA125L
MECHANICAL DIMENSIONS
LAA125L
2.540 ± 0.127
(0.100 ± 0.005)
9.652 ± 0.381
(0.380 ± 0.015)
8-0.762 DIA.
(8-0.030 DIA.)
2.540 ± 0.127
(0.100 ± 0.005)
9.144 ± 0.508
(0.360 ± 0.020)
6.350 ± 0.127
(0.250 ± 0.005)
Pin 1
PCB Hole Pattern
7.620 ± 0.254
(0.300 ± 0.010)
0.457 ± 0.076
(0.018 ± 0.003)
3.302 ± 0.051
(0.130 ± 0.002)
7.620 ± 0.127
(0.300 ± 0.005)
7.239 TYP.
(0.285)
4.064 TYP
(0.160)
7.620 ± 0.127
(0.300 ± 0.005)
0.254 ± 0.0127
(0.010 ± 0.0005)
Dimensions
mm
(inches)
0.813 ± 0.102
(0.032 ± 0.004)
LAA125LS
PCB Land Pattern
9.652 ± 0.381
(0.380 ± 0.015)
2.540 ± 0.127
(0.100 ± 0.005)
6.350 ± 0.127
(0.250 ± 0.005)
Pin 1
3.302 ± 0.051
(0.130 ± 0.002)
0.635 ± 0.127
(0.025 ± 0.005)
9.525 ± 0.254
(0.375 ± 0.010)
0.457 ± 0.076
(0.018 ± 0.003)
2.54
(0.10)
8.90
(0.3503)
1.65
(0.0649)
7.620 ± 0.254
(0.300 ± 0.010)
0.254 ± 0.0127
(0.010 ± 0.0005)
0.65
(0.0255)
4.445 ± 0.127
(0.175 ± 0.005)
Dimensions
mm
(inches)
0.813 ± 0.102
(0.032 ± 0.004)
LAA125PL
2.540 ± 0.127
(0.100 ± 0.005)
6.350 ± 0.127
(0.250 ± 0.005)
0 MIN / 0.102 MAX
(0 MIN / 0.004 MAX)
9.398 ± 0.127
(0.370 ± 0.005)
Pin 1
9.652 ± 0.381
(0.380 ± 0.015)
7.620 ± 0.254
(0.300 ± 0.010)
2.286 MAX.
(0.090 MAX.)
2.54
(0.10)
0.635 ± 0.127
(0.025 ± 0.005)
0.203 ± 0.013
(0.008 ± 0.0005)
8.70
(0.3425)
1.55
(0.0610)
0.65
(0.0255)
2.159 ± 0.025
(0.085 ± 0.001)
0.457 ± 0.076
(0.018 ± 0.003)
0.864 ± 0.120
(0.034 ± 0.004)
6
PCB Land Pattern
Dimensions
mm
(inches)
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R14
INTEGRATED CIRCUITS DIVISION
LAA125L
MECHANICAL DIMENSIONS
LAA125LSTR Tape & Reel
2.0
(0.08)
4.0
(0.16)
330.2 DIA.
(13.00 DIA.)
Top Cover
Tape Thickness
0.102 MAX.
(0.004 MAX.)
7.5
(0.30)
Bo=10.30
(0.406)
K0 =4.90
(0.193)
16.0±0.3
(0.63±0.012)
Ao=10.30
(0.406)
K1 =4.20
(0.165)
Embossed Carrier
Embossment
P1=12.00
(0.472)
User Direction of Feed
Dimensions
mm
(inches)
NOTES:
1. Dimensions carry tolerances of EIA Standard 481-2
2. Tape complies with all “Notes” for constant dimensions listed on page 5 of EIA-481-2
3. Controlling dimension: mm
LAA125PLTR Tape & Reel
2.00
(0.079)
330.2 DIA.
(13.00 DIA.)
Top Cover
Tape Thickness
0.102 MAX.
(0.004 MAX.)
7.50
(0.295)
Embossment
W = 16.00
(0.63)
Bo = 10.30
(0.406)
K0 = 2.70
(0.106)
K1 = 2.00
(0.079)
Embossed Carrier
4.00
(0.157)
Ao = 10.30
(0.406)
P1 = 12.00
(0.472)
User Direction of Feed
Dimensions
mm
(inches)
NOTES:
1. All dimensions carry tolerances of EIA Standard 481-2
2. The tape complies with all “Notes” for constant dimensions listed on page 5 of EIA-481-2
3. Controlling dimension: mm
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test each product selected for their own applications. Littelfuse products are not designed for, and may not be used in, all applications.
Read complete Disclaimer Notice at https://www.littelfuse.com/disclaimer-electronics.
7
Specification: DS-LAA125L-R14
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OptoMOS® is a registered trademark of IXYS Integrated Circuits
All rights reserved. Printed in USA.
9/30/2021