Description
The MOC3051M is a high-performance optocoupler IC featuring a Gallium Arsenide (GaAs) infrared-emitting diode optically coupled to a non-zero-crossing silicon bilateral AC switch (triac). This device is specifically engineered to bridge the gap between low-voltage microcontrollers and high-voltage 115 VAC/240 VAC power lines.
Designed for demanding environments, the MOC3051M provides exceptional static dv/dt capability, ensuring stable and reliable switching performance, even when driving highly inductive loads. It is the ideal component for achieving precise random-phase control of high-current triacs or thyristors in industrial and consumer applications.
Note: Product images are for reference only. The actual product may vary in appearance or manufacturer marking depending on stock availability.
Features
- High Voltage Handling: 600V peak blocking voltage for robust operation on AC mains.
- Stability: Excellent IFT (Input Forward Current) stability with low LED degradation.
- dv/dt Immunity: Enhanced static dv/dt capability ensures stability with inductive loads (e.g., motors, solenoids).
- Isolation: Provides high-voltage electrical isolation between control logic and AC loads.
- Package: Standard 6-pin dual-in-line (DIP-6) through-hole package.
Benefits
- Provides safe and reliable control of AC peripherals from low-voltage logic.
- Allows for random-phase switching, essential for dimmers and variable motor speed control.
- Extends component longevity due to stable infrared LED performance.
- Simple integration into existing PCB designs with a standard footprint.
Applications
- Solenoid and Valve Control
- Incandescent Lamp Dimmers
- Motor and Temperature Controls
- Static AC Power Switches
- Solid State Relays (SSR)
- Lamp Ballasts
Package Includes
- 1 x MOC3051M Triac-out Optocoupler IC (DIP-6)
Specifications
| Parameter | Specification |
|---|---|
| Product Name | MOC3051M |
| Device Type | Random-Phase Triac Driver Optocoupler IC |
| Package / Case | DIP-6 |
| Mounting Type | Through Hole |
| Shipping Weight | 0.001 kg |
| Shipping Dimensions | 4 × 4 × 1 cm |




