LH1546AT/AAB/AABTR
1 Form A
Solid State Relay
FEATURES
• Current Limit Protection
• l/O Isolation, 5300 V
RMS
• Typical R
ON
20
Ω
• 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
• Equivalent to CP Clare LCA110
AGENCY APPROVALS
• UL – File No. E52744
• BSI/BABT Cert. No. 7980
• FIMKO Approval
• CSA – Certification 093751
APPLICATIONS
• General Telecom Switching
– On/off Hook Control
– Ring Delay
– Dial Pulse
– Ground Start
– Ground Fault Protection
• Instrumentation
• Industrial Controls
• See Application Note 56
DESCRIPTION
The LH1546 is robust, ideal for telecom and ground
fault applications. It is a SPST normally open switch (1
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 cir-
cuitry which meets FCC 68.302 and other regulatory
voltage surge requirements when overvoltage protec-
tion is provided.
Package Dimensions in Inches (mm)
DIP
Pin One ID.
3
.256 (6.50)
.248 (6.30)
4
5
6
2
1
S
6
DC
5
S'
4
S
S'
1
2
3
.343 (8.70)
.335 (8.50)
.039
(1.00)
Min.
4° Typ.
.020 (.051) Min.
.022 (0.55)
.018 (0.45)
.035 (0.90)
.031 (0.80)
.100 (2.54) Typ.
.300 (7.62)
Typ.
.150 (3.81)
.130 (3.30)
18° Typ.
.014 (.35)
.010 (.25)
.347 (8.82)
.300 (7.62)
.150 (3.81)
.110 (2.79)
SMD
.343 (8.71)
.335 (8.51)
Pin one I.D.
.256 (6.50)
.248 (6.30)
.050 (1.27) typ.
.052 (1.33)
.048 (1.22)
.150 (3.81)
.130 (3.30)
.0098 (.25)
.0040 (.10)
.040 (1.016)
.020 (0.508)
.395 (10.03)
.375 (9.63)
.300 (7.62)
typ.
.039
(0.99)
min.
3° to 7°
18°
.012 (0.31)
.008 (0.20)
4°
.100 (2.54)
.315 (8.00)
min.
Part Identification
Part Number
LH1546AT
LH1546AAB
LH1546AABTR
Description
6-pin DIP, Tubes
6-pin SMD, Tubes
6-pin SMD, Tape and Reel
Document Number: 83838
Revision 06-March-02
www.vishay.com
3–177
Recommended Operating Conditions
120
100
Load Current (mA)
I
Fon
= 5 mA
80
60
40
20
0
-40
-20
0
20
40
60
80
Ambient Temperature (°C)
I
Fon
= 3 mA
I
Fon
= 2 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 ........................................... –40 to +85°C
Storage Temperature Range .......................................... –40 to +150°C
Soldering Temperature (t=10 s max.) ......................................... 260°C
Isolation Test Voltage (for 1.0 s) ........................................... 5300 V
RMS
Isolation Resistance
V
IO
=500 V,
T
A
=25°C ............................................................
≥
10
12
Ω
V
IO
=500 V,
T
A
=100°C ..........................................................
≥
10
11
Ω
SSR Output Power Dissipation (continuous)............................ 550 mW
LED Continuous Forward Current ............................................... 50 mA
LED Reverse Voltage (
I
R
≤
10 mA) ................................................. 8.0 V
DC or Peak AC Load Voltage (
I
L
≤
50 mA) .................................... 350 V
Continuous DC Load Current at 25°C
Bidirectional...........................................................................120 mA
Unidirectional......................................................................... 200 mA
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.
Parameter
Input
LED Forward Current, Switch Turn-on
LED Forward Current, Switch Turn-off
LED Forward Voltage
Output
ON-resistance, ac/dc: Pin 4 (±) to 6 (±)
ON-resistance, dc: Pin 4, 6 (+) to 5 (-)
OFF-resistance
Current Limit ac/dc
Off-state Leakage Current
R
OFF
I
LMT
I
O
R
ON
—
—
0.5
170
—
—
Output Capacitance, Pin 4 to 6
C
O
—
—
Switch Offset
Transfer
Input/Output Capacitance
Turn-on Time
Turn-off Time
C
ISO
t
on
t
off
—
—
—
0.67
1.14
0.71
—
3.0
3.0
pF
ms
ms
V
ISO
=1.0 V
I
F
=5.0 mA,
I
L
=50 mA
I
F
=5.0 mA,
I
L
=50 mA
V
OS
—
28
7.0
300
210
0.35
0.096
18
6.7
0.3
35
10.0
—
250
200
1.0
—
—
—
Ω
Ω
G
Ω
mA
nA
I
F
=5.0 mA,
I
L
=50 mA
I
F
=5.0 mA,
I
L
=100 mA
I
F
=0 mA,
V
L
=±100 V
I
F
=5.0 mA, t=5.0 ms
V
L
=6.0 V
I
F
=0 mA,
V
L
=±100 V
I
F
=0 mA,
V
L
=±350 V
I
F
=0 mA,
V
L
=1.0 V
I
F
=0 mA,
V
L
=50 V
I
F
=5.0 mA
I
Fon
I
Foff
V
F
—
0.2
1.15
1.1
1.0
1.26
2.0
—
1.45
mA
mA
V
I
L
=100 mA, t=10 ms
V
L
±350 V
I
F
=10 mA
Symbol
Min.
Typ.
Max.
Units
Test Conditions
µ
A
pF
pF
µV
Document Number: 83838
Revision 06-March-02
www.vishay.com
3–178
Typical Performance Characteristics
Figure 1. LED Voltage vs. Temperature
1.6
LED FORWARD VOLTAGE (V)
1.5
I
F
=50 mA
1.4
1.3
1.2
I
F
=1.0 mA
1.1 I
F
=2.0 mA
1.0
–40
I
F
=5.0 mA
I
F
=10 mA
–20
0
20
40
60
80
I
F
=20 mA
Figure 4. LED Current for Switch Turn-on vs. Temperature
200
LED Forward Current for Switch
Turn-on (%), Normalized to 25°C
150
I
L
= 100 mA
100
50
0
AMBIENT TEMPERATURE (°C)
-50
-40
-20
0
20
40
60
Ambient Temperature (°C)
80
Figure 2. LED Forward Current vs. LED Forward Voltage
120
100
80
60
40
20
0
0
0 .5
1
1 .5
2
LED forward Voltage (V)
T = 85°C
T = 25°C
T = –40°C
Figure 5. LED Dropout Voltage vs. Temperature
1 .2 6
1 .2 2
LED forward Voltage (V)
1 .1 8
1 .1 4
1 .1
1 .0 6
1 .0 2
–4 0
LED Forward Current (mA)
I
L
= 100 mA
–2 0
0
20
40
60
80
Temperature (°C)
Figure 3. LED Reverse Current vs. LED Reverse Voltage
10
Figure 6. Load Current vs. Load Voltage
300
I
F
= 5 mA
250
8
LED Current (uA)
Current Limit (µA)
T = –40°C
T = 25°C
T = 85°C
4
200
150
100
50
0
0
1
2
3
Load Voltage (V)
4
5
T = –40°C
T = 25°C
T = 85°C
6
2
0
0
20
40
60
80
100
Reverse LED Voltage (V)
Document Number: 83838
Revision 06-March-02
www.vishay.com
3–179
Figure 7. Current Limit vs. Temperature
Change in Current Limit (%) Norm. to 25°C
40
Figure 10. ON-Resistance vs. Temperature
40
Change in Ron (%), norm. to 25°C
I
F
= 5 mA
V
L
= 6 V
30
20
10
0
-10
-20
-30
-40
30
20
10
0
-10
-20
-30
-40
-40
I
F
= 5 mA
I
L
= 50 mA
-20
0
20
40
60
80
-20
0
20
40
60
80
Temperature (°C
)
Temperature (°C)
Figure 8. Switch Breakdown Voltage vs. Load Current
60
50
Load Current (µA)
40
30
20
10
0
0
100
200
300
400
500
Breakdown Voltage (V)
T = –40°C
T = 25°C
T = 85°C
I
F
= 0 mA
I
L
< 50
µA
Figure 11. Variation in ON-Resistance vs. LED Current
8
ac/dc Ron Variation (%) norm. @ IF= 5mA
6
I
F
= 5 mA
4
2
0
-2
0
4
8
12
16
20
LED Forward current (mA)
Figure 9. Switch Offset Voltage vs. LED Current
2.5
I
F
= 5 mA
Figure 12. Switch Capacitance vs. Applied Voltage
50
I
F
= 0 mA
Capacitance (pF)
40
Switch Offset Voltage (microvolt)
2.0
1.5
30
1.0
20
0.5
10
0.0
25
0
35
45
55
65
75
85
0
20
40
60
80
100
Temperature (°C)
Applied Voltage (V)
Document Number: 83838
Revision 06-March-02
www.vishay.com
3–180
Figure 13. Insertion Loss vs. Frequency
0.6
0.5
Insertion Loss (dB)
0.4
0.3
0.2
0.1
0.0
R
L
=600
Ω
I
F
=5 mA
Figure 16. Switch Breakdown Voltage vs. Temperature
CHANGE IN BREAKDOWN VOLTAGE (%)
NORMALIZED TO 25°C
8
6
4
2
0
–2
–4
–6
–8
–10
–40
–20
0
20
40
60
80
10
2
10
3
10
4
Frequency (Hz)
10
5
AMBIENT TEMPERATURE (°C)
Figure 14. Output Isolation
12 0
10 0
Isolation (dB)
V
P
= 10 V
Figure 17. Switch Offset Voltage vs. Temperature
2.5
I
F
= 5 mA
Switch Offset Voltage (microvolt)
1000000
R
L
= 50
Ω
2.0
80
60
40
1.5
1.0
20
0
1000
0.5
100000
10000
Frequency (Hz)
0.0
25
35
45
55
65
75
85
Temperature (°C)
Figure 15. Leakage Current vs. Applied Voltage at
Elevated Temperatures
1000.0
I
F
= 0 mA
100.0
Figure 18. Turn-On Time vs. Temperature
10
Change in Turn-On Time (%)
norm. to 25°C
Leakage Current (nA)
T = 85°C
T = 70°C
T = 50°C
6
2
10.0
-2
1.0
T = 25°C
0.1
0
50
100
150
200
250
300
350
Load voltage (V)
-6
I
F
=5 mA
I
L
=50 mA
-10
-40
-20
0
20
40
Temperature (°C)
60
80
Document Number: 83838
Revision 06-March-02
www.vishay.com
3–181
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