ProjectsPricingInsights

MOC3021SM AI Analysis:
Datasheet, Specs, Alternatives & ECAD

AI summary

MOC3021SM product

MOC3021SM

SCR Output

OptocouplerTriac Driveronsemi

The MOC3021SM is a 400V random-phase triac driver optocoupler, ideal for isolating low-voltage control logic from AC power loads.

Best for

  • AC power switching
  • Industrial control interfaces

Avoid if

  • Directly driving high-current loads without a power triac

Check before use

  • Snubber circuit requirements for inductive loads

Key specifications

Peak Blocking Voltage
400 V
Isolation Voltage
4170 Vrms
Trigger Current
15 mA

Compliance & Environment

RoHS
ROHS3 Compliant
REACH
REACH Unaffected
MSL
1 (Unlimited)
ECCN
EAR99
HTSUS
8541.49.8000

Application

Industrial ControlsSolid State Relays

Datasheet

DSA-214419.pdf

800 KB

Datasheet AI

CAD Models

Download ECAD models for MOC3021SM: KiCad symbol & footprint, Altium footprint, PCB footprint, and 3D model.

EDA Symbol
Schematic symbol for your EDA tool
Get Files
PCB Footprint
Land pattern for PCB layout
Get Files
3D Model
STEP file for mechanical design
Get Files
KiCad Library
Verified KiCad 8 symbol, footprint, and 3D model
Generate library

Login required · CAD models billed separately as an add-on

Where to Buy

Real-time and catalog pricing from verified distributors

Live prices updated on demand · Catalog (~) prices may differ

Alternative components

Alternatives are being enriched. Analyze this part in PartGenie for the latest matches.

Design and risk insights

Questions & answers

It is a 6-pin SMD optocoupler featuring a GaAs infrared LED and a light-activated silicon bilateral switch, used to drive power triacs.