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MOC3042-M from FSC,Fairchild Semiconductor

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MOC3042-M

Manufacturer: FSC

6-PIN DIP ZERO-CROSS OPTOISOLATORS TRIAC DRIVER OUTPUT (250/400 VOLT PEAK)

Partnumber Manufacturer Quantity Availability
MOC3042-M,MOC3042M FSC 5018 In Stock

Description and Introduction

6-PIN DIP ZERO-CROSS OPTOISOLATORS TRIAC DRIVER OUTPUT (250/400 VOLT PEAK) # Introduction to the MOC3042-M Optocoupler  

The MOC3042-M is a highly reliable optocoupler designed for interfacing between low-voltage control circuits and high-voltage AC loads. It integrates a gallium arsenide infrared LED optically coupled to a silicon triac, providing electrical isolation and noise immunity in various applications.  

This component is commonly used in solid-state relay (SSR) replacements, motor controls, and AC power switching due to its zero-crossing detection feature. The zero-crossing function ensures that the triac triggers only when the AC voltage is near zero, reducing electromagnetic interference (EMI) and minimizing inrush current in inductive or capacitive loads.  

Key features of the MOC3042-M include a high isolation voltage (typically 5,300 Vrms), a compact DIP-6 package, and compatibility with logic-level inputs. Its built-in snubberless triac allows direct switching of AC loads up to 400 V, making it suitable for appliances, lighting controls, and industrial automation.  

Engineers favor the MOC3042-M for its robustness, ease of integration, and compliance with safety standards. Its ability to provide galvanic isolation between control and load circuits enhances system reliability while protecting sensitive components from voltage spikes.  

In summary, the MOC3042-M is a versatile optocoupler that simplifies AC load control while ensuring safety and performance in demanding electrical environments.

Application Scenarios & Design Considerations

6-PIN DIP ZERO-CROSS OPTOISOLATORS TRIAC DRIVER OUTPUT (250/400 VOLT PEAK)

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