LH1540AAB/ AABTR/ AT
Vishay Semiconductors
1 Form A Solid State Relay
DIP
SMD
Features
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Current Limit Protection
Isolation Test Voltage 5300 V
RMS
Typical R
ON
20
Ω,
max 25
Ω
Load Voltage 350 V
Load Current 120 mA
High Surge Capability
Clean Bounce Free Switching
Low Power Consumption
High Reliability Monolithic Detector
SMD lead available on tape and reel
S
6
DC
5
S'
4
S
S'
i179001
1
2
3
e3
Description
Pb
Pb-free
• Lead-free component
• Component in accordance to RoHS 2002/95/EC
and WEEE 2002/96/EC
Agency Approvals
• UL1577, File No. E52744 System Code H or J,
Double Protection
• CSA - Certification 093751
• BSI/BABT Cert. No. 7980
• FIMKO Approval
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)
The LH1540 is robust, ideal for telecom and ground
fault applications. It is a SPST normally open switch
(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 com-
prised of a photodiode array, switch control circuitry
and MOSFET switches. In addition, it employs cur-
rent-limiting circuitry which meets FCC 68.302 and
other regulatory voltage surge requirements when
overvoltage protection is provided.
Order Information
Part
LH1540AAB
LH1540AABTR
LH1540AT
Remarks
Thru Hole, SMD-6
Tape and Reel, SMD-6
DIP-6
Document Number 83833
Rev. 1.4, 26-Oct-04
www.vishay.com
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