MOC3021 The MOC3021 is a Triac Driven Optoisolator featuring zero-crossing capability. It offers a 400V output terminal voltage and 1A peak output current.
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MOC3021

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The MOC3021 is a Triac Driven Optoisolator featuring zero-crossing capability. It offers a 400V output terminal voltage and 1A peak output current.
✓ Total Stock: 300 pcs

MOC3021 Available from 1 distributor

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MOC3021 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
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Industrial Grade
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MOC3021 Description

Short technical summary and product information.

The MOC3021 is a Triac Driven Optoisolator designed for controlling AC loads. It integrates a zero-crossing TRIAC driver, which ensures that the TRIAC begins conduction only when the AC wave reaches 0V. This feature helps prevent direct peak voltages from damaging the load.

 

Key electrical specifications include a typical LED forward voltage of 1.15V at 15mA and a maximum TRIAC output terminal voltage of 400V. The TRIAC can handle a peak output current of 1A. This optoisolator is available in a 6-pin PDIP package.

 

Its zero-crossing ability and TRIAC output make it suitable for controlling high-voltage AC loads through digital controllers like microprocessors or microcontrollers. Applications include dimming lights or controlling the speed of AC motors. The MOC3021 is typically used to switch a power TRIAC, which then drives the load, due to the optocoupler's limited current rating.

MOC3021 Quick Information

Product Type: Optoisolator
Canonical Name: MOC3021 Triac Driven Optoisolator
Subcategory: Triac Output

MOC3021 Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

MOC3021 Features

  • Zero-crossing TRIAC driver
  • 400V maximum output voltage
  • 1A peak output current
  • 1.15V typical LED forward voltage
  • PDIP package

MOC3021 Applications

  • Control high voltage AC loads
  • Interface with microcontrollers
  • Dimming AC lights
  • Control AC motor speed

MOC3021 FAQs

6 frequently asked questions generated from this part’s specifications.
What is the maximum TRIAC output voltage?

The maximum TRIAC output terminal voltage is 400V.

What package is the MOC3021 available in?

The MOC3021 is available in a PDIP package.

What is the typical LED forward voltage?

The typical LED forward voltage is 1.15V at 15mA.

What is the forward latch current?

The typical forward latch current is 15mA.

What is the peak output current?

The peak output current is 1A.

What is the mounting type?

The mounting type is through-hole.

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