Fairchild MOC3021 Optocoupler Triac Driver IC (Pack of 50)

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Description

The MOC3021 is an optically isolated Triac driver device. It contains a GaAs infrared emitting diode and a light-activated silicon bilateral switch, which functions like a triac. It is designed for interfacing between electronic controls and power triacs to control resistive and inductive loads for 115 VAC operations

MOC-3021 is a Triac driver zero-crossing optocoupler made of light-emitting and light-sensing devices with no internal connection except light bean. The optoisolators allow two circuits to exchange signals without making any electrical connection. 

This device works on the principle that light is proportional to signal, and the signal is transferred to a phototransistor. Opto-isolators or Opto-couplers are made up of a light-emitting device, and a light-sensitive device, all wrapped up in one package but with no electrical connection between the two, just a beam of light. The light emitter is nearly always an LED.

The light-sensitive device may be a photodiode, phototransistor, or more esoteric devices such as thyristors, TRIACs etc. 

Features

  • Excellent IFT Stability: IR emitting diode has low degradation
  • High isolation voltage: minimum 5300 VAC RMS
  • Peak blocking voltage: 400V-MOC3021

Applications

  • Industrial controls
  • Traffic lights
  • Vending machines
  • Solid-state relay
  • Lamp ballasts
  • Solenoid/valve controls
  • Static AC power switch
  • Incandescent lamp dimmers
  • Motor control

Datasheet

Specifications
Model MOC3021
Brand Fairchild Semiconductor/Onsemi
Reverse Voltage 3V
Continuous Forward Current 60mA
Total Power Dissipation  300mW
VER Off–State Output Terminal Voltage  400 Volts 
Peak Repetitive Surge Current 1A
Number of pins 6
Package DIP-6
Quantity 50

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