ISOCOM MOC3042XSM Optocoupler, Triac Output, SMD, Zero Crossing, 400V

The ISOCOM MOC3042XSM is a high-performance, 6-pin optocoupler engineered for robust electrical isolation and precise switching control. It integrates a gallium arsenide infrared emitting diode with a monolithic silicon detector that functions as a zero-crossing bilateral TRIAC driver. This sophisticated design ensures safe, reliable triggering of power TRIACs by providing optical isolation between the low-voltage control circuitry and the high-voltage load.

A defining feature of this component is its zero-crossing operating mode, which activates the TRIAC only when the AC load voltage is near zero. This significantly reduces electromagnetic interference (EMI) and inrush current, protecting sensitive connected devices and prolonging the lifespan of the TRIAC and load. With a high isolation voltage rating of 5.3kVrms (7.5kV peak), it provides exceptional protection against voltage transients and enhances overall system safety.

Key Specifications & Features

• Construction: Gallium arsenide IR LED coupled with a silicon detector/TRIAC.
• Operating Mode: Zero-crossing, for low-noise switching.
• Isolation Voltage: 5.3kVrms (7.5kVpk), ensuring high electrical separation.
• Peak Blocking Voltage: 400V, suitable for mains voltage applications.
• Package: Surface-mount DIP (SMD DIP) for efficient PCB assembly.
• Forward Current (IF): 50mA.
• Reverse Voltage (VR): 6V.
• Total Power Dissipation: 250mW.

All critical electrical parameters are 100% tested, guaranteeing consistent performance and reliability for demanding applications. Its compact SMD footprint makes it an ideal choice for modern, space-constrained electronic designs.