MOC3081M

Triac, SCR Output Optoisolators Overview

The MOC3081M is an 800V zero-crossing TRIAC driver output optocoupler manufactured by onsemi. It integrates a GaAs infrared emitting diode optically coupled to a monolithic silicon detector, providing a zero-voltage crossing bidirectional TRIAC driver function. Designed for interfacing logic systems with 240 VAC line-powered equipment, it features a maximum trigger current of 15 mA and a typical static dv/dt of 1500 V/µs. The device operates within a temperature range of -40°C to +85°C and offers high insulation voltage capabilities.

Triac, SCR Output Optoisolators Feature Summary

• Integrates a GaAs infrared LED with a monolithic silicon detector for optical isolation
• Provides zero-voltage crossing functionality to minimize electromagnetic interference during switching
• Features high static dv/dt capability for reliable operation in noisy environments
• Complies with UL1577 and DIN EN/IEC60747-5-5 safety standards

Triac, SCR Output Optoisolators Applications

• Solid-state relays
• Industrial control systems
• Motor control interfaces
• Solenoid drivers
• Consumer appliance logic interfaces

Triac, SCR Output Optoisolators Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to ensure correct package type and tape/reel specifications. Confirm that the component meets the required safety certifications such as UL1577 or VDE for your specific application region. Cross-reference the datasheet revision date to ensure compatibility with current design standards and pinout configurations before finalizing procurement.

Triac, SCR Output Optoisolators Selection Notes

Select this component when interfacing low-voltage logic circuits with high-voltage AC loads requiring zero-crossing switching to reduce noise. Ensure the discrete power TRIAC selected matches the voltage and current ratings supported by the MOC3081M's driver output. Consider the operating temperature range and insulation requirements to guarantee system reliability under expected environmental conditions.

Triac, SCR Output Optoisolators Part Context

The MOC3081M belongs to the MOC308x series of zero-crossing TRIAC driver optocouplers from onsemi. This family is designed to simplify the interface between digital logic and AC power lines. The device is housed in a standard 6-pin DIP package, facilitating through-hole mounting in various industrial and consumer electronic designs requiring galvanic isolation.

Triac, SCR Output Optoisolators Replacement Considerations

Compatible substitutes include the MOC3082M and MOC3083M from the same manufacturer family. These variants share similar zero-crossing characteristics but may differ in peak current ratings or specific electrical parameters. Verify functional equivalence and pin compatibility before substitution.