LH1540AT

The LH1540AT is a Solid State Relay with SPST-NO contact and through hole terminals. This 1-form-A relay 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. It employs current-limiting circuitry which meets FCC 68.302 and other regulatory voltage surge requirements when overvoltage protection is provided. These relay incorporate current limiting which will clamp the load current at a predetermined value preventing damage to the device from transients and load short circuits. The devices are capable of switching currents from nanoamps to hundreds of milliamps, making them ideal for a wide variety of switching applications. Optocouplers with high voltage MOSFET outputs that duplicate the function of electromechanical relays.

• Current limit protection
• High surge capability
• Clean bounce-free switching
• Low power consumption
• High reliability monolithic detector
• No arcing or noise
• Immune to shock
• 550mW Power dissipation
• 2ms Turn-on/off maximum time
• -40 to 85°C Ambient temperature range

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Communications & Networking, Sensing & Instrumentation, Automation & Process Control