Vishay, LH1546AEF MOSFET Output Optocoupler, Surface Mount, 4-Pin SMD

The LH1546AEF (4 pin SOP) is robust, ideal for telecom and ground fault applications. It is an SPST normally open switch (1 Form A) that replaces electromechanical relays in many applications. It is constructed using a GaAlAs LED for actuation control and MOSFETs for the switch output. In addition, it employs current-limiting circuitry to provide overvoltage protection.

Current limit protection
Isolation test voltage 3750 VRMS
Typical RON 28 Ω
APPLICATIONS:
General telecom switching
Instrumentation
Industrial controls