VISHAY
LH1546AD/ ADF/ ADFTR
Document Number 83836
Rev. 1.3, 26-May-04
Vishay Semiconductors
www.vishay.com
1
i179058
1
2
A
K
4
3
S
S1
S
S'
1 Form A Solid State Relay
Features
Current Limit Protection
Isolation Test Voltage 5300 V
RMS
Typical R
ON
28
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
SMT Lead Available on Tape and Reel
Agency Approvals
UL - File No. E52744
BSI/BABT Cert. No. 7980
Applications
General Telecom Switching
- On/off Hook Control
- Ring Delay
- Dial Pulse
- Ground Start
- Ground Fault Protection
Instrumentation
Industrial Controls
See "Solid State Relays" (Application Note 56)
Description
The LH1546AD (4 Pin DIP) is robust, ideal for telecom
and ground fault applications. It is a SPST normally
open switch (1 Form A) that replaces electromechan-
ical relays in many applications. It is constructed
using a GaAs LED for actuation control and an inte-
grated monolithic die for the switch output. The die,
fabricated in a high-voltage dielectrically isolated
BCDMOS technology, is comprised of a photodiode
array, switch control circuitry and MOSFET switches.
In addition, it employs current-limiting circuitry which
meets FCC 68.302 and other regulatory voltage
surge requirements when overvoltage protection is
provided.
Order Information
Absolute Maximum Ratings, T
amb
= 25 C
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 time can adversely affect reliability.
SSR
Part
Remarks
LH1546AD
Tubes, DIP-4
LH1546ADF
Gullwing, Tubes, SMD-4
LH1546ADFTR
Gullwing, Tape and Reel, SMD-4
Parameter
Test condition
Symbol
Value
Unit
SSR output power dissipation
(continuous)
P
diss
550
mW
LED continuous forward current
I
F
50
mA
LED reverse voltage
I
R
10 A
V
R
8.0
V
www.vishay.com
2
Document Number 83836
Rev. 1.3, 26-May-04
VISHAY
LH1546AD/ ADF/ ADFTR
Vishay Semiconductors
Electrical Characteristics, T
amb
= 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.
Input
Output
Transfer
DC or peak AC load voltage
I
L
50 A
V
L
350
V
Contiunous DC load current at
25 C
120
mA
Ambient temperature range
T
amb
- 40 to + 85
C
Storage temperature range
T
stg
- 40 to + 150
C
Soldering temperature
t = 10 s max
T
sld
260
C
Isolation test voltage
for 1.0 s
V
ISO
5300
V
RMS
Isolation resistance
V
IO
= 500 V, T
amb
= 25 C
R
IO
10
12
V
IO
= 500 V, T
amb
= 100 C
R
IO
10
11
Parameter
Test condition
Symbol
Min
Typ.
Max
Unit
LED forward current,
switch turn-on
I
L
= 100 mA, t = 10 ms
I
Fon
1.7
3.0
mA
LED forward current,
switch turn-off
V
L
= 300 V
I
Foff
0.2
1.6
mA
LED forward voltage
I
F
= 10 mA
V
F
1.15
1.20
1.45
V
Parameter
Test condition
Symbol
Min
Typ.
Max
Unit
ON-resistance, ac/dc:
Pin 3 () to 4 ()
I
F
= 5.0 mA, I
L
= 50 mA
R
ON
28
35
OFF-resistance
I
F
= 0 mA, V
L
= 100 V
R
OFF
0.5
300
G
Off-state leakage current
I
F
= 0 mA, V
L
= 100 V
I
O
0.32
200
nA
Output capacitance Pin 3 to 4
I
F
= 0 mA, V
L
= 1.0 V
C
O
55
pF
C
O
10
pF
Parameter
Test condition
Symbol
Min
Typ.
Max
Unit
Capacitance (input-output)
V
ISO
= 1.0 V
C
IO
0.5
pF
Turn-on time
I
F
= 5.0 mA, I
L
= 50 mA
t
on
2.0
3.0
ms
Turn-off time
I
F
= 5.0 mA, I
L
= 50 mA
t
off
0.08
3.0
ms
Parameter
Test condition
Symbol
Value
Unit
VISHAY
LH1546AD/ ADF/ ADFTR
Document Number 83836
Rev. 1.3, 26-May-04
Vishay Semiconductors
www.vishay.com
3
Typical Characteristics
(T
amb
= 25
C unless otherwise specified)
Fig. 1 Recommended Operating Conditions
Fig. 2 LED Voltage vs. Temperature
Fig. 3 LED Current for Switch Turn-on vs. Temperature
0
20
40
60
80
100
120
40
20
0
20
40
60
80
Ambient Temperature (
C )
17335
I
Fon
= 5 mA
Load
Current
(
m
A
)
I
Fon
= 3 mA
I
Fon
= 2 mA
ilh1546ad_01
V
F
(V)
0.1
1.0
10.0
100.0
1.6
1.5
1.4
1.3
1.2
1.1
1.0
0.9
IF (mA)
T = -40 C
T = -20 C
T = 0 C
T = 25 C
T = 50 C
T = 70 C
T = 85 C
50
0
50
100
150
200
250
40
20
0
20
40
60
80
Ambient Temperature (
C )
17334
I
L
= 100 mA
T
u
rnon
(%),
Norm.
to
25
C
LED
Forward
Current
for
Switch
Fig. 4 CTR
CB
vs. LED Current
Fig. 5 Switch Capacitance vs. Applied Voltage
Fig. 6 Leakage Current vs. Applied Voltage
ilh1546ad_03
Change
in
R
on
(%),
Normmalized
to
25
C
Ambient Temperature (C)
40
30
20
10
0
-10
-20
-30
-40
-40
-20
0
20
40
60
80
IF = 5.0 mA
IL = 50 mA
ilh1546ad_04
90
80
70
60
50
40
30
20
10
0
Capacitance
(pF)
Applied Voltage (V)
0
10
20
30
40
50
60
70
80
90 100
ilh1546ad_06
I Leakage
(nA)
100.0
10.0
1.0
0.1
0
50
100
150
200
250
300
350
400
Load Voltage (V)
T = 85 C
T = 70 C
T = 50 C
T = 25 C
www.vishay.com
4
Document Number 83836
Rev. 1.3, 26-May-04
VISHAY
LH1546AD/ ADF/ ADFTR
Vishay Semiconductors
Fig. 7 Turn-on Time vs. Temperature
Fig. 8 Turn-off Time vs. Temperature
Fig. 9 Turn-on Time vs. LED Current
ilh1546ad_07
-20
0
20
40
60
80
Change
in
T
on
(%),
Normalized
to
25
C
Ambient Temperature (C)
-40
-20
0
20
40
60
80
IF = 2.0 mA
IF = 3.0 mA
IF = 4.0 mA
IF = 5.0 mA
IF = 6.0 mA
IF = 8.0 mA
IF = 10 mA
ilh1546ad_08
30
20
10
0
-10
-20
-30
-40
-50
-40
20
0
20
40
60
80
Change
in
T
off
(%),
Normalized
to
25
C
Ambient Temperature (C)
IF = 2.0 mA
IF = 3.0 mA
IF = 4.0 mA
IF = 5.0 mA
IF = 10 mA
IF = 8.0 mA
IF = 6.0 mA
ilh1546ad_09
0
1
2
3
4
5
6
0
5
10
15
20
25
30
35
40
45
50
T
on
(ms)
LED Forward Current (mA)
T = 25 C
T = -40 C
T = 85 C
Fig. 10 Turn-off Time vs. LED Current
ilh1546ad_10
LED Forward Current (mA)
0
5
10
20
25
30
35
40
45
50 100
140
120
100
80
60
40
20
0
Turn-off
Time
(
s)
T = -40 C
T = 85 C
T = 25 C
VISHAY
LH1546AD/ ADF/ ADFTR
Document Number 83836
Rev. 1.3, 26-May-04
Vishay Semiconductors
www.vishay.com
5
Package Dimensions in Inches (mm)
Package Dimensions in Inches (mm)
i178028
.268 (6.81)
.255 (6.48)
3
4
2
1
.190 (4.83)
.179 (4.55)
pin one ID
.045 (1.14)
.030 (0.76)
4
typ.
1.00 (2.54)
.150 (3.81)
.130 (3.30)
.035 (0.89)
.020 (.508)
10
39
.022 (.56)
.018 (.46)
.012 (.30)
.008 (.20)
.031 (.79) typ.
.050 (1.27) typ.
.300 (7.62) typ.
.130 (3.30)
.110 (2.79)
.250 (6.35)
.230 (5.84)
.050 (1.27)
DIP
ISO Method A
i178029
.255 (6.48)
.268 (6.81)
3
4
.179 (4.55)
.190 (4.83)
pin one ID
.030 (.76)
.045 (1.14)
4 typ.
1.00 (2.54)typ.
.130 (3.30)
.150 (3.81)
.0098 (.249)
.035 (.102)
.020 (.508)
.040 (1.02)
.031 (.79)
typ.
.050 (1.27)
typ.
.010 (.25)
typ.
10
37
.375 (9.52)
.305 (10.03)
.296 (7.52)
.312 (7.90)
.315 (8.00)
min.
Lead
coplanarity
.004 max.
SMD
ISO Method A
.100 (2.54)
R .010 (.25)
.070 (1.78)
.030 (.76)
.315 (8.00) min
.060 (1.52)
.435 (11.05)
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