
1
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LAA125
DS-LAA125-R4
LAA125 is a 350V, 170mA, 16Ω 2-Form-A relay. It combines enhanced peak load current capability with low onresistance. Current limiting version is available (“L” suffix,
see specification for variations in performance).
• Telecommunications
• Telecom Switching
• Tip/Ring Circuits
• Modem Switching (Laptop, Notebook, Pocket Size)
• Hookswitch
• Dial Pulsing
• Ground Start
• Ringer Injection
• Instrumentation
• Multiplexers
• Data Acquisition
• Electronic Switching
• I/O Subsystems
• Meters (Watt-Hour, Water, Gas)
• Medical Equipment-Patient/Equipment Isolation
• Security
• Aerospace
• Industrial Controls
• UL Recognized: File Number E76270
• CSA Certified: File Number LR 43639-10
• BSI Certified to:
• BS EN 60950:1992 (BS7002:1992)
Certificate #: 7344
• BS EN 41003:1993
Certificate #: 7344
• Small 8 Pin DIP Package
• Low Drive Power Requirements (TTL/CMOS
Compatible)
• No Moving Parts
• High Reliability
• Arc-Free With No Snubbing Circuits
• 3750V
RMS
Input/Output Isolation
• FCC Compatible
• VDE Compatible
• No EMI/RFI Generation
• Machine Insertable, Wave Solderable
• Surface Mount and Tape & Reel Versions Available
Applications
Features
Description
Approvals
DUAL POLE OptoMOS® Relays
Ordering Information
Part # Description
LAA125 8 Pin DIP (50/Tube)
LAA125P 8 Pin Flat Pack (50/Tube)
LAA125PTR 8 Pin Flat Pack (1,000/Reel)
LAA125S 8 Pin Surface Mount (50/Tube)
LAA125STR 8 Pin Surface Mount (1,000/Reel)
LAA125 Units
Load Voltage 350 V
Load Current 170 mA
Max R
ON
16 Ω
Switching Characteristics of
Normally Open (Form A) Devices
LAA125 Pinout
AC/DC Configuration
+ Control - Switch #1
Ð Control - Switch #1
+ Control - Switch #2
Ð Control - Switch #2
CONTROL
1
2
3
4
10ms
8
Load - Switch #1
7
Load - Switch #1
6
Load - Switch #2
5
Load - Switch #2
LOAD
10%
+
90%
+
+
10%
T
OFF
T
ON

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LAA125
R4
Electrical Characteristics
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 these or
any other conditions beyond those indicated in the operational sections of this data sheet is not implied. Exposure
of the device to the absolute maximum ratings for an
extended period may degrade the device and effect its
reliability.
Absolute Maximum Ratings (@ 25˚ C)
2
PARAMETER CONDITIONS SYMBOL MIN TYP MAX UNITS
Output Characteristics @ 25°C
Load Voltage (Peak) - V
L
- - 350 V
Load Current (Continuous) - I
L
- - 170 mA
Peak Load Current 10ms max I
LPK
- - 400 mA
On-Resistance
AC/DC Configuration I
L
=Load Current R
ON
-- 16 Ω
Off-State Leakage Current V
L
=350V I
LEAK
-- 1 µA
Switching Speeds
Turn-On I
F
=5mA, VL=10V T
ON
-- 5 ms
Turn-Off I
F
=5mA, VL=10V T
OFF
-- 5 ms
Output Capacitance 50V; f=1MHz C
OUT
-50 - pF
Input Characteristics @ 25°C
Input Control Current I
L
=170mA I
F
5- 50 mA
Input Dropout Current - - 0.4 0.7 - mA
Input Voltage Drop I
F
=5mA V
F
0.9 1.2 1.4 V
Reverse Input Voltage - V
R
-- 5 V
Reverse Input Current VR=5V I
R
-- 10 µA
Input Characteristics @ 25°C
Input to Output Capacitance - C
I/O
-3 - pF
Input to Output Isolation - V
I/O
3750 - - V
RMS
Parameter Min Typ Max Units
Input Power Dissipation - - 1501 mW
Input Control Current - - 50 mA
Peak (10ms) - - 1 A
Reverse Input Voltage - - 5 V
Total Power Dissipation - - 8002mW
Capacitance
Input to Output - 3 - pF
Isolation Voltage
Input to Output 3750 - - V
RMS
Operational Temperature -40 - +85°C
Storage Temperature -40 - +125°C
Soldering Temperature
DIP Package - - +260
°
C
Flatpack/Surface Mount
Package - - +220°C
(10 Seconds Max.)
1
Derate Linearly 1.33 mw/˚C
2
Derate Linearly 6.67 mw/˚C

LAA125
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R4
3
Performance Data*
LAA125
Typical LED Forward Voltage Drop
(N=50 Ambient Temperature = 25°C)
IF = 5mADC
35
30
25
20
15
10
5
0
1.17 1.19 1.21 1.23 1.25
LED Forward Voltage Drop (V)
Device Count (N)
LAA125
Typical Blocking Voltage Distribution
(N=50 Ambient Temperature = 25°C)
25
20
15
10
5
0
400 410 420 430
Blocking Voltage (V)
Device Count (N)
390
440
LAA125
Typical IF for Switch Operation
(N=50 Ambient Temperature = 25°C)
(Load Current = 170mADC)
LED Current (mA)
Device Count (N)
25
20
15
10
5
0
0.54 0.78 0.900.420.30 0.66
LAA125
Typical IF for Switch Dropout
(N=50 Ambient Temperature = 25°C)
(Load Current = 170mADC
25
20
15
10
5
0
0.30 0.40 0.780.18 0.35 0.45
LED Current (mA)
Device Count (N)
)
LAA125
Typical Turn-On Time
(N=50 Ambient Temperature = 25°C)
(Load Current = 120mADC; IF = 10mADC)
1.6 1.7 1.8 1.9 2.0 2.1 2.2
Turn-On (ms)
Device Count (N)
25
20
15
10
5
0
LAA125
Typical Turn-Off Time
(N=50 Ambient Temperature = 25°C)
(Load Current = 120mADC; IF = 10mADC)
0.30 0.50 0.700.20 0.40 0.60 0.80
Turn-Off (ms)
Device Count (N)
25
20
15
10
5
0
LAA125
Typical Load Current vs. Temperature
Temperature (°C)
Load Current (mA)
200
175
150
125
100
75
0
-40 -20 0 20 40 60 80 120100
5mA
10mA
5mA
10mA
Single Pole
Dual Pole
LAA125
Typical Leakage vs. Temperature
(Measured across Pins 5 & 6 or 7 & 8)
Temperature (°C)
Leakage (µA)
-40
0.100
0.090
0.080
0.070
0.060
0.050
0.040
0.030
0.020
0.010
0
-20 0 20 40 60 80 100
LAA125
Typical Blocking Voltage
vs. Temperature
Temperature (°C)
Blocking Voltage (V
RMS
)
-40
340
335
330
325
320
315
310
305
-20 0 20 40 60 80 100
LAA125
Typical Turn-On vs. Temperature
(Load Current = 80mADC)
Temperature (°C)
5mA
10mA
Turn-On (ms)
-40
3.0
2.5
2.0
1.5
1.0
0.5
0
-20 0 20 40 60 80 100
LAA125
Typical Turn-Off vs. Temperature
(Load Current = 120mADC)
Temperature (°C)
Turn-Off (ms)
-40
0.60
0.50
0.40
0.30
0.20
0.10
0
-20 0 20 40 60 80 100
5mA
LAA125
Typical On-Resistance Distribution
(N=50 Ambient Temperature = 25°C)
(Load Current = 170mADC)
35
30
25
20
15
10
5
0
12.64 12.92 13.212.5 12.78 13.06
On-Resistance (Ω)
Device Count (N)
12.36

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4
LAA125
R4
Performance Data*
LAA125
Typical LED Forward Voltage Drop
vs. Temperature
Temperature (°C)
LED Forward Voltage Drop (V)
1.8
1.6
1.4
1.2
1.0
0.8
-40 -20 0 20 40 60 80 120100
50mA
10mA
5mA
LAA125
Typical Turn-On vs. LED Forward Current
(Load Current = 170mADC)
LED Forward Current (mA)
Turn-On (ms)
0
5 1015202530354045
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
50
LAA125
Typical Turn-Off vs. LED Forward Current
(Load Current = 120mADC)
LED Forward Current (mA)
Turn-Off (ms)
0
10 15 20 25 30 35 40 45
0.60
0.55
0.50
0.45
0.40
0.35
0.30
0.25
0.20
0
50
55
LAA125
Typical On-Resistance vs. Temperature
(Load Current = max rated over temp)
Temperature (°C)
On-Resistance (Ω)
-40
20
18
16
14
12
10
0
-20 0 20 40 60 80 100
Single Pole
Dual Pole
5mA
5mA
5mA
10mA
10mA
Instantaneous
LAA125
Typical IF for Switch Operation
vs. Temperature
(Load Current = max rated over temp)
Temperature (°C)
LED Current (mA)
-40
3.6
3.2
2.8
2.4
2.0
1.6
1.2
0.8
0.4
-20 0 20 40 60 80 100
LAA125
Typical IF for Switch Dropout
vs. Temperature
(Load Current = max rated over temp)
Temperature (°C)
LED Current (mA)
-40
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
-20 0 20 40 60 80 100
LAA125
Typical Load Current vs. Load Voltage
(Ambient Temperature = 25°C)
IF = 5mADC
Load Voltage (V)
Load Current (mA)
200
150
100
50
0
-50
-100
-150
-200
-2.0 -1.5 -1.25 -0.625 0 0.625 1.25 1.875 3.0
LAA125
Energy Rating Curve
Time
Load Current (A)
1.2
1.0
0.8
0.6
0.4
0.2
0
10µs 1ms 100ms 10s100µs 10ms 1s 100s

LAA125
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5
R4
Dimensions
mm
(Inches)
MECHANICAL DIMENSIONS
8 Pin DIP Through Hole (Standard)
7.620 ± .254
(.300 ± .010)
3.302
7.239 TYP.
(.285)
(.130)
9.144 TYP.
(.360)
8 Pin Flatpack (“P” Suffix)
2.159 TYP.
(.085)
2.286 MAX.
(.090)
7.620 ± .254
(.300 ± .010)
.635 ± .127
(.025)
.203
(.008)
6.350 ± .127
(.250 ± .005)
6.350 ± .127
(.250 ± .005)
9.652 ± .381
(.380 ± .015)
2.540 ± .127
(.100 ± .005)
.457 ± .076
(.018 ± .003)
8.077 ± .127
(.318 ± .005 )
9.652 ± .381
(.380 ± .015)
2.540 ± .127
(.100 ± .005)
.457 ± .076
(.018 ± .003)
8.077 ± .127
(.318 ± .005)
9.144 ± .508
(.360 ± .020)
9.398 ± .127
(.370 ± .005)
PC Board Pattern
(Top View)
8-.800 DIA.
(8-.031 DIA.)
6.350 ± .127
(.250 ± .005)
2.540 ± .127
(.100 ± .005)
7.620 ± .127
(.300 ± .005)
PC Board Pattern
(Top View)
2.540 ± .127
(.100 ± .005)
1.193
(.047)
.787
(.031)
7.620 ± .127
(.300 ± .005)
8.763 ± .127
(.345 ± .005)
8 Pin DIP Surface Mount (“S” Suffix)
7.620 ± .254
(.300 ± .010)
4.445 ± .127
(.175 ± .005)
Tape and Reel Packaging for 8 Pin Surface Mount Package
Embossed Carrier
3.302
(.130)
.635 TYP.
(.025)
330.2 DIA.
(13.00)
Top Cover
Tape Thickness
.102 MAX.
(.004)
12.090
(.476)
Embossment
.254 TYP.
(.010)
6.731 MAX.
(.265)
6.350 ± .127
(.250 ± .005)
.406 MAX.
(.016)
4.877
(.192)
Top Cover
Tape
1.753 ± .102
(.069 ± .004)
7.493 ± .102
(.295 ± .004)
.050R TYP.
9.652 ± .381
(.380 ± .015)
2.540 ± .127
(.100 ± .005)
.457 ± .076
(.018 ± .003)
8.077 ± .127
(.318 ± .005)
2.007 ± .102
(.079 ± .004)
9.525 ± .254
(.375 ± .010)
1.498 ± .102
(.059 ± .004)
11.989 ± .102
(.472 ± .004)
User Direction of Feed
PC Board Pattern
(Top View)
1.905 ± .127
(.075 ± .005)
1.498 ± .127
(.059 ± .005)
3.987 ± .102
(.157 ± .004)
18
10.300 ± .102
(.405 ± .004)
2.540 ± .127
(.100 ± .005)
16.002 ± .305
(.630 ± .012)
10.300
(.405)
1.549 ± .102
(.061 ± .004)
8.305 ± .127
(.327 ± .005)

CLARE LOCATIONS
Clare Headquarters
78 Cherry Hill Drive
Beverly, MA 01915
Tel: 1-978-524-6700
Fax: 1-978-524-4900
Toll Free: 1-800-27-CLARE
Clare Micronix Division
145 Columbia
Aliso Viejo, CA 92656-1490
Tel: 1-949-831-4622
Fax: 1-949-831-4628
SALES OFFICES
AMERICAS
Americas Headquarters
Clare
78 Cherry Hill Drive
Beverly, MA 01915
Tel: 1-978-524-6700
Fax: 1-978-524-4900
Toll Free: 1-800-27-CLARE
Eastern Region
Clare
P.O. Box 856
Mahwah, NJ 07430
Tel: 1-201-236-0101
Fax: 1-201-236-8685
Toll Free: 1-800-27-CLARE
Central Region
Clare Canada Ltd.
3425 Harvester Road, Suite 202
Burlington, Ontario L7N 3N1
Tel: 1-905-333-9066
Fax: 1-905-333-1824
Western Region
Clare
1852 West 11th Street, #348
Tracy, CA 95376
Tel: 1-209-832-4367
Fax: 1-209-832-4732
Toll Free: 1-800-27-CLARE
Canada
Clare Canada Ltd.
3425 Harvester Road, Suite 202
Burlington, Ontario L7N 3N1
Tel: 1-905-333-9066
Fax: 1-905-333-1824
EUROPE
European Headquarters
CP Clare nv
Bampslaan 17
B-3500 Hasselt (Belgium)
Tel: 32-11-300868
Fax: 32-11-300890
France
Clare France Sales
Lead Rep
99 route de Versailles
91160 Champlan
France
Tel: 33 1 69 79 93 50
Fax: 33 1 69 79 93 59
Germany
Clare Germany Sales
ActiveComp Electronic GmbH
Mitterstrasse 12
85077 Manching
Germany
Tel: 49 8459 3214 10
Fax: 49 8459 3214 29
Italy
C.L.A.R.E.s.a.s.
Via C. Colombo 10/A
I-20066 Melzo (Milano)
Tel: 39-02-95737160
Fax: 39-02-95738829
Sweden
Clare Sales
Comptronic AB
Box 167
S-16329 Spånga
Tel: 46-862-10370
Fax: 46-862-10371
United Kingdom
Clare UK Sales
Marco Polo House
Cook Way
Bindon Road
Taunton
UK-Somerset TA2 6BG
Tel: 44-1-823 352541
Fax: 44-1-823 352797
ASIA PACIFIC
Asian Headquarters
Clare
Room N1016, Chia-Hsin, Bldg II,
10F, No. 96, Sec. 2
Chung Shan North Road
Taipei, Taiwan R.O.C.
Tel: 886-2-2523-6368
Fax: 886-2-2523-6369
http://www.clare.com
Worldwide Sales Offices
Specification: DS-LAA125-R4
©Copyright 2001, Clare, Inc.
OptoMOS®is a registered trademark of Clare, Inc.
All rights reserved. Printed in USA.
2/23/01
Clare cannot assume responsibility for use of any circuitry other
than circuitry entirely embodied in this Clare product. No circuit
patent licenses nor indemnity are expressed or implied. Clare
reserves the right to change the specification and circuitry, without notice at any time. The products described in this document
are not intended for use in medical implantation or other direct life
support applications where malfunction may result in direct physical harm, injury or death to a person.