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switches that can replace electromechanical relays in many
applications. They are 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, the LH1556 SSRs employ
current-limiting circuitry, enabling them to pass lightning
surge testing as per ANSI/TIA-968-B and other regulatory
surge requirements when overvoltage protection is
provided. vishay solid state relay LH1556AAC FEATURES
Dual channel (LH1546)
Current limit protection
Isolation test voltage 5300 VRMS
Typical RON 28
Load voltage 350 V
Load current 120 mA
High surge capability
Clean bounce free switching
Low power consumption
SMD lead available on tape and reel
Compliant to RoHS Directive 2002/95/EC and in
accordance to WEEE 2002/96/EC