LH1502BB/BAC/BACTR
Dual 1 Form A/B, C
Solid State Relay
FEATURES
• Current Limit Protection
• l/O Isolation, 3750 V
RMS
• Typical
R
ON
20
Ω
• Load Voltage 350 V
• Load Current 150 mA
• High Surge Capability
• Linear, AC/DC Operation
• Clean Bounce Free Switching
• Low Power Consumption
• SMD Lead Available on Tape and Reel
AGENCY APPROVALS
• UL – File No. E52744
• CSA – Certification 093751
• BSI
APPLICATIONS
• General Telecom Switching
– On/off Hook Control
– Ring Delay
– Dial Pulse
– Ground Start
– Ground Fault Protection
• Instrumentation
• Industrial Controls
DESCRIPTION
The LH1502 relays contain normally open and normally
closed switches that can be used independently as a 1
Form A and 1 Form B relay, or when used together, as a
1 Form C relay. The relays are constructed as a mult.-
chip hybrid device. Actuation contral is via an Infrared
LED. The output switch is a combination of a photo-
diode array with MOSFET switches and control circuity.
Package Dimensions in Inches (mm)
DIP
.380 (9.65)
.100 (2.54)
6-.031 (6-.80) Dia.
.100 (2.54)
.250 (6.35)
.360 (9.14) .250 (6.35)
.300 (7.62)
.018 (.46)
.318 (8.08)
S1
8
S1'
7
S2
6
S2'
5
S1
S1'
.300 (7.62)
.300 (7.62)
.130 (3.30)
S2
S2'
.285 (7.24) Typ.
1
2
3
4
.360 (9.14) Typ.
SMD
.380 (9.65)
.100 (2.54)
.100 (2.54)
.250 (6.35)
.375 (9.53)
.075 (1.90)
.018 (.46)
.318 (8.08)
.300 (7.62)
.175 (4.45)
.130 (3.30)
.327 (8.31)
.059 (1.50)
.025 (.64) Typ.
.010 (.25) Typ.
Part Identification
Part Number
LH1502BB
LH1502BAC
LH1502BACTR
Description
8-pin DIP, Tubes
8-pin SMD, Gullwing, Tubes
8-pin SMD, Gullwing, Tape and Reel
Document Number: 83806
Revision 17-August-01
www.vishay.com
3–43
Recommended Operating Conditions
150
LOAD CURRENT (mA)
Absolute Maximum Ratings,
T
A
=25
°
C
5.0 mA
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.
120
90
60
30
0
–40
–20
0
20
40
60
80
FORM A
AMBIENT TEMPERATURE (°C)
150
5.0 mA
Load Current (mA)
120
90
50
30
0
–40
FORM B
Ambient Operating Temperature Range,
T
A
.................... –40 to +85
°
C
Storage Temperature Range,
T
stg
.................................. –40 to +125
°
C
Pin Soldering Temperature, t=10 s max,
T
S
................................ 260
°
C
Input/Output Isolation Test Voltage,
t=1.0 s,
I
ISO
=10
µ
A max.,
V
ISO
...........................................3750 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
µ
A,
V
R
.............................................. 8.0 V
dc or Peak ac Load Voltage,
I
L
≤
50
µ
A,
V
L
................................... 350 V
Continuous dc Load Current,
I
L
(Form C Operation) .................................................................150 mA
Peak Load Current,
I
P
(t=100 ms) Form A ............................................................................ †
(single shot) Form B ................................................................350 mA
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.
–20
0
20
40
60
Ambient Temperature (°C)
80
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 for Switch Turn-on
(NO)
LED Forward Current for Switch Turn-off
(NO)
LED Forward Current for Switch Turn-on
(NC)
LED Forward Current for Switch Turn-off
(NC)
LED Forward Voltage
Output
ON-resistance:
(NO, NC)
OFF-resistance:
(NO)
(NC)
Current Limit
(NO)
I
Fon
I
Foff
I
Fon
I
Foff
—
0.4
0.2
—
1.15
0.6
0.5
0.9
1.0
1.26
2.0
—
—
2.0
1.45
mA
mA
mA
mA
V
Ω
Sym.
Min.
Typ.
Max.
Units
Test Conditions
I
L
=100 mA, t=10 ms
V
L
=±300 V
I
L
=100 mA, t=10 ms
V
L
=±300 V
I
F
=10 mA
I
F
=5.0 mA (NO)
0 mA (NC)
I
L
=50 mA (NC)
I
F
=0 mA,
V
L
=±100 V
I
F
=5.0 mA,
V
L
=±100 V
V
F
R
ON
12
20
25
R
OFF
0.35
0.1
5000
1.4
290
—
—
380
G
Ω
I
LMT
270
mA
I
F
=5.0 mA, t=5.0 ms
V
L
=±5.0 V
Document Number: 83806
Revision 17-August-01
www.vishay.com
3–44
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