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MOC3081 from FSC,Fairchild Semiconductor

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MOC3081

Manufacturer: FSC

6-Pin DIP Zero-Cross Optoisolators Triac Driver Output

Partnumber Manufacturer Quantity Availability
MOC3081 FSC 8 In Stock

Description and Introduction

6-Pin DIP Zero-Cross Optoisolators Triac Driver Output # Introduction to the MOC3081 Optocoupler  

The **MOC3081** is a highly reliable **optoisolator** designed for **triac driving applications**, providing safe and efficient electrical isolation between low-voltage control circuits and high-voltage AC loads. This component integrates an **infrared LED** optically coupled to a **silicon triac**, enabling solid-state switching without direct electrical connection.  

## Key Features  

- **Zero-crossing detection**: The MOC3081 triggers the triac only when the AC voltage crosses zero, reducing inrush current and minimizing electromagnetic interference (EMI).  
- **High isolation voltage**: With a **7,500 V peak** isolation rating, it ensures robust protection between input and output circuits.  
- **Low LED trigger current**: Typically requiring **15 mA**, it is compatible with microcontrollers and logic-level signals.  
- **600 V peak blocking voltage**: Suitable for controlling standard AC mains voltages.  

## Applications  

The MOC3081 is commonly used in:  
- **Solid-state relays (SSRs)**  
- **AC motor controls**  
- **Lighting dimmers**  
- **Heating element regulation**  

By incorporating zero-crossing switching, the MOC3081 enhances system longevity and reduces stress on connected components. Its compact **6-pin DIP** package makes it easy to integrate into various circuit designs while maintaining high noise immunity.  

For engineers seeking a dependable solution for AC load switching, the MOC3081 offers a balanced combination of performance, safety, and efficiency.

Application Scenarios & Design Considerations

6-Pin DIP Zero-Cross Optoisolators Triac Driver Output

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