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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
NC
5
S'
4
S
S'
i179003
1
2
3
e3
Pb
Pb-free
鈥?Lead-free component
鈥?Component in accordance to RoHS 2002/95/EC
and WEEE 2002/96/EC
Description
Agency Approvals
鈥?UL1577, File No. E52744 System Code H or J,
Double Protection
鈥?BABT/BSI Certified
The LH1550 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 similar to the LH1540, but has
a characteristically higher On resistance. It is con-
structed using a GaAIAs LED for actuation control
and an integrated monolithic die for the switch output.
The die, fabricated in a high-voltage dielectrically iso-
lated 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.
Applications
General Telecom Switching
- On/off Hook Control
- Ring Delay
- Dial Pulse
- Ground Start
- Ground Fault Protection
Instrumentation
Industrial Controls
Order Information
Part
LH1550AT1
LH1550AAB1
LH1550AAB1TR
Remarks
Thru Hole, DIP-6
SMD-6
Tape and Reel, SMD-6
Document Number 83841
Rev. 1.5, 26-Oct-04
www.vishay.com
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