
Document Number: 83804
Revision 06-March-02
www.vishay.com
3–35
LH1500AT/AAB/AABTR
 1 Form A
Solid State Relay
FEATURES
 Current Limit Protection 
 l/O Isolation, 5300 V
 Typical R
ON
 Load Voltage 350 V 
 Load Current 150 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
RMS
 20 
AGENCY APPROVALS
 UL – File No. E52744
 BSI/BABT Cert. No. 7980
 FIMKO Approval
 CSA – Certi
fi
cation 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 LH1500 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.
Part Identi
fi
cation
Part Number
Description
LH1500AT
6-pin DIP, Thru Hole
LH1500AAB
6-pin SMD 
LH1500AABTR
6-pin SMD, Tape and Reel
.014 (.35)
.010 (.25)
.347 (8.82)
.300 (7.62)
.150 (3.81)
.110 (2.79)
.150 (3.81)
.130 (3.30)
.020 (.051) Min.
.300 (7.62)
Typ.
.035 (0.90)
.031 (0.80)
.100 (2.
.039 
(1.00)
Min.
.022 (0.55)
.018 (0.45)
SMD
.256 (6.50)
.248 (6.30)
.343 (8.70)
.335 (8.50)
Pin One ID.
6
5
4
1
2
3
18
°
 Typ.
4
° 
Typ.
.343 (8.71)
.335 (8.51)
.256 (6.50)
.248 (6.30)
Pin one I.D.
.039 
(0.99)
min.
.150 (3.81)
.130 (3.30)
.100 (2.54)
.052 (1.33)
.048 (1.22)
4
°
.040 (1.016)
.020 (0.508)
.0098 (.25)
.0040 (.10)
.012 (0.31)
.008 (0.20)
.300 (7.62)
typ.
.395 (10.03)
.375 (9.63)
3
°
 to 7
°
18
°
min.
.315 (8.00)
.050 (1.27) typ.
4
6
5
1
2
3
S'
S
DC
S
S'
Package Dimensions in Inches (mm)
DIP