Document Number: 83809
www.vishay.com
Revision 17-August-01
351
FEATURES
Two Independent Relays
Current Limit Protection
l/O Isolation, 5300 V
RMS
Typical
R
ON
15
Load Voltage 350 V
Load Current 120 mA
High Surge Capability
Linear, AC/DC Operation
Clean Bounce Free Switching
Low Power Consumption
High Reliability Monolithic Receptor
SMD Lead Available on Tape and Reel
AGENCY APPROVALS
UL File No. E52744
CSA Certification 093751
BSI/BABT Cert. No. 7980
VDE 0884 Approval
FIMKO Approval
APPLICATIONS
General Telecom Switching
On/off Hook Control
Ring Delay
Dial Pulse
Ground Start
Ground Fault Protection
Instrumentation
Industrial Controls
DESCRIPTION
The LH1505 contains two normally open switches that
can be used as two independent SPST relays or as one
DPST relay. The relay is constructed using a GaAlAs
LED for actuation control and integrated monolithic dies
for the switch outputs. The die, fabricated in a high-volt-
age dielectrically isolated technology, is comprised of a
photodiode array, switch control circuity, and DMOS
switches. In addition, the LH1505 relay employs current-
limiting circuity, enabling it to pass FCC 68.302 and
other regulatory voltage surge requirements when over-
voltage protection is provided.
Part Identification
Part Number
Description
LH1505AB
8-pin DIP, Tubes
LH1505AAC
8-pin SMD, Gullwing, Tubes
LH1505AACTR
8-pin SMD, Gullwing, Tape and Reel
pin one ID
.268 (6.81)
.255 (6.48)
.390 (9.91)
.379 (9.63)
.045 (1.14)
.030 (0.76)
4
typ.
.100 (2.54) typ.
10
3
9
.300 (7.62)
typ.
.022 (.56)
.018 (.46)
.012 (.30)
.008 (.20)
.130 (3.30)
.110 (2.79)
.150 (3.81)
.130 (3.30)
.035 (.89)
.020 (.51)
.250 (6.35)
.230 (5.84)
4
3
2
1
.031 (0.79)
.050 (1.27)
5
6
7
8
Pin one I.D.
.390 (9.91)
.379 (9.63)
.045 (1.14)
.030 (0.78)
.040 (1.02)
.020 (.51)
4
typ.
.008 (.25)
.004 (.10)
.150 (3.81)
.130 (3.30)
.100 (2.54)
typ.
.050
(1.27)
typ.
.312 (7.80)
.298 (7.52)
.315
(8.00)
typ.
.395 (10.03)
.375 (9.52)
.031 (.79)
typ.
.268 (6.81)
.255 (6.48)
Radius
.010
(2.54)
typ.
10
3
to 7
8
7
6
5
1
2
3
4
S2'
S2'
S2
S2
S1
S1
S1'
S1'
Package Dimensions in Inches (mm)
DIP
SMD
LH1505AB/AAC/AACTR
Dual 1 Form A
Solid State Relay
Document Number: 83809
www.vishay.com
Revision 17-August-01
352
Electrical Characteristics,
T
A
=25
C
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
L
=100 mA
Parameter
Sym.
Min.
Typ.
Max.
Units
Test Conditions
Input
LED Forward Current, Switch Turn-on
I
Fon
--
1.0
2.0
mA
I
L
=100 mA, t=10 ms
LED Forward Current, Switch Turn-off
I
Foff
0.2
0.9
--
mA
V
L
200 V
LED Forward Voltage
V
F
1.15
1.26
1.45
V
I
F
=10 mA
Output
ON-resistance
R
ON
10
15
20
I
F
=5.0 mA,
I
L
=50 mA
OFF-resistance
R
OFF
0.5
5000
--
G
I
F
=0 mA,
V
L
=100 V
Current Limit
I
LMT
170
200
280
mA
I
F
=5.0 mA, t=5.0 ms
V
L
6.0 V
Off-state Leakage Current
--
--
0.02
200
nA
I
F
=0 mA,
V
L
=100 V
--
--
1.0
A
I
F
=0 mA,
V
L
=250 V
Output Capacitance
--
--
55
--
pF
I
F
=0 mA,
V
L
=1.0 V
--
10
--
I
F
=0 mA,
V
L
=50 V
Pole-to-Pole Capacitance (S1 to S2)
--
--
0.5
--
pF
I
F
=5.0 mA
Switch Offset
--
--
0.15
--
V
I
F
=5.0 mA
Transfer
Input/Output Capacitance
C
ISO
--
1.1
--
pF
V
ISO
=1.0 V
Turn-on Time
t
on
--
1.4*
4.0*
ms
I
F
=5.0 mA,
I
L
=50 mA
Turn-off Time
t
off
--
0.7*
4.0*
ms
I
F
=5.0 mA,
I
L
=50 mA
Absolute Maximum Ratings,
T
A
=25
C
Stresses in excess of the Absolute Maximum Ratings can cause permanent
damage to the device. These are absolute stress ratings only. Functional opera-
tion of the device is not implied at these or any other conditions in excess of
those given in the operational sections of the data sheet. Exposure to maximum
rating conditions for extended periods can adversely affect device reliability.
Ambient Temperature Range (
T
A
) ....................................40 to +85
C
Storage Temperature Range (
T
stg
) .................................40 to +150
C
Pin Soldering Temperature (t=10 s max) (
T
S
) ............................. 260
C
Input/Output Isolation Voltage
(t=1.0 s,
I
ISO
=10
A max) (
V
ISO
) ....................................... 5300 V
RMS
Pole-to-Pole Isolation Voltage (S1 to S2)*
(dry air, dust free, at sea level) .................................................1600 V
LED Continuous Forward Current (
I
F
) .........................................50 mA
LED Reverse Voltage (
I
R
10
A) (
V
R
) ...........................................8.0 V
DC or Peak AC Load Voltage (
I
L
50
A) (
V
L
) ..............................250 V
Continuous DC Load Current (
I
L
)
One Pole Operating.................................................................130 mA
Two Poles Operating ...............................................................120 mA
Peak Load Current (t=100 ms) (single shot) (
I
P
).................................
Output Power Dissipation (continuous) (
P
DISS
)........................600 mW
*
Breakdown occurs between the output pins external to the package.
Refer to Current Limit Performance Application Note for a discussion on
relay operation during transient currents.
Recommended Operating Conditions
60
80
0
40
120
100
20
40 20 0 20 40 60 80
Load Current (mA)
Ambient Temperature (
C)
I
Fon
=2.0 mA
I
Fon
=3.0 mA
I
Fon
=4.0 mA
I
Fon
=5.0 to 20 mA
Document Number: 83809
www.vishay.com
Revision 17-August-01
353
Typical Performance Characteristics
Figure 1. LED Voltage vs. Temperature
Figure 2. LED Current for Switch Turn-On vs. Temperature
Figure 3. Current Limit vs. Temperature
Ambient Temperature (
C)
LED Forward Voltage (V)
40
20
0
20
40
60
80
1.6
1.5
1.4
1.3
1.2
1.1
1.0
I
F
=1.0 mA
I
F
=2.0 mA
I
F
=20 mA
I
F
=50 mA
I
F
=5.0 mA
I
F
=10 mA
Ambient Temperature (
C)
100
60
80
60
40
40
40
20
20
0
20
0
20
40
60
80
I
L
= 100 mA
LED Forward Current for Switch
Turn-off (%), Normalized to 25
C
40
40
10
30
20
0
20
10
40
30
20
0
20
40
60
Ambient Temperature (
C)
80
I
F
= 5.0 mA
t = 5.0 ms
V
L
=
SEE ELEC. CHAR
.
Change in Current Limit (%)
Normalized to 25
C
Figure 4. LED Dropout Voltage vs. Temperature
Figure 5. ON-Resistance vs. Temperature
Figure 6. Variation in ON-Resistance vs. LED Current
40
0
20
Ambient Temperature (
C)
1.20
1.15
1.10
0.95
1.00
40
1.05
80
60
20
MIN.
TYP.
I
L
= 100 mA
LED Forward Voltage (V)
40
40
50
10
30
20
0
20
10
40
30
20
0
20
40
60
Ambient Temperature (
C)
80
I
L
= 50 mA
Change in ON-Resistance (%)
Normalized to 25
C
0
1.5
0.5
0.5
1.0
0
4
8
12
LED Forward Current (mA)
16
20
I
L
= 50 mA
ac/dc On-resistance Variation (%)
Normalized to Data Sheet
R
ON
Specification at I
F
=5.0 mA
Document Number: 83809
www.vishay.com
Revision 17-August-01
354
Figure 7. Switch Capacitance vs. Applied Voltage
Figure 8. Insertion Loss vs. Frequency
Figure 9. Output Isolation
0
20
40
Applied Voltage (V)
80
50
70
60
40
20
0
10
60
30
100
80
I
F
=0 mA
T
A
=25
C
f=1.0 MHz
Capacitance (pF)
Frequency (Hz)
0.30
0
0.25
0.20
0.10
0.05
10
2
10
3
10
4
10
5
0.15
R
L
= 600
Insertion Loss (dB)
Frequency (Hz)
100
80
60
40
20
0
10
2
10
3
10
4
10
5
10
6
10
7
Isolation (dB)
V
P
=10 V
R
L
=50
Figure 10. Leakage Current vs. Applied Voltage
Figure 11. Leakage Current vs. Applied Voltage at Elevated
Temperatures
Figure 12. Switch Breakdown Voltage vs. Temperature
90
0
50
100
150
200
250
300
Load Voltage (V)
100
70
80
60
40
30
50
20
10
0
350
400
I
F
= 0 mA
T
A
= 25
C
Off-state Leakage Current (pA)
Load Voltage (V)
3.0
2.5
2.0
1.0
0.5
1.5
0
0
50
100
150
200
250
300
350
400
85
C
70
C
50
C
Off-state Leakage Current (nA)
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
Document Number: 83809
www.vishay.com
Revision 17-August-01
355
Figure 13. Switch Offset Voltage vs. Temperature
Figure 14. Switch Offset Voltage vs. LED Current
Figure 15. Turn-On Time vs. Temperature
20
40
Ambient Temperature (
C)
3.5
0
50
70
60
30
3.0
1.5
2.0
2.5
0.5
1.0
80
90
I
F
= 5.0 mA
Switch Offset Voltage (
V)
0
10
LED Forward Current (mA)
0.6
0
15
25
20
5
0.5
0.2
0.3
0.4
0.1
Switch Offset Voltage (
V)
40
20
0
20
40
60
80
Ambient Temperature (
C)
60
50
20
30
10
0
10
20
30
40
40
I
F
=5.0 mA
I
L
=50 mA
Change in Turn-on Time (%)
Normalized to 25
C
Figure 16. Turn-Off Time vs. Temperature
Figure 17. Turn-On Time vs. LED Current
Figure 18. Turn-Off Time vs. LED Current
120
40
40
100
80
60
20
20
60
0
40
20
0
20
40
60
80
80
160
140
Ambient Temperature (
C)
I
F
=5.0 mA
I
L
=50 mA
Change in Turn-off Time (%)
Normalized to 25
C
0
10
20
LED Forward Current (mA)
10
8
6
0
2
30
4
50
40
40
C
I
L
=50 mA
Turn-on Time (ms)
25
C
85
C
0
10
20
1.4
1.2
1.0
0.2
30
50
40
0.8
0.6
0.4
I
L
=50 mA
LED Forward Current (mA)
40
C
25
C
85
C
Turn-off Time (ms)
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