MOC3020 Equivalent & Substitute Parts

Part Overview

The MOC3020 is a triac output optoisolator manufactured by onsemi, designed for high-voltage isolation applications requiring 5300Vrms isolation capability. This component features a single-channel triac output configuration in a 6-DIP through-hole package. The MOC3020 is currently classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations. Substitute parts must maintain identical electrical isolation ratings, output characteristics, and package compatibility to ensure direct replacement capability.

Substiute Parts

MOC3020

onsemiIn Stock: 19292MOC3020 Datasheet

Current PartRFQ

MOC3020M

Fairchild SemiconductorIn Stock: 78475MOC3020M Datasheet

DirectRFQ

MOC3020

onsemiIn Stock: 19292MOC3020 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the MOC3020 is determined by strict equivalence across the following critical parameters:

• Isolation voltage rating of 5300Vrms minimum
• Single-channel triac output configuration
• Maximum LED trigger current of 30mA
• Hold current specification of 100µA
• DC forward current maximum of 50mA
• 6-DIP through-hole package format
• Absence of zero-crossing detection circuit

The MOC3020M from Fairchild Semiconductor qualifies as a direct manufacturer substitute, maintaining all specified electrical and mechanical parameters while offering active product status and improved inventory availability.

Parameter Comparison

Engineering Selection Recommendations

The MOC3020M represents the primary substitute option for obsolete MOC3020 applications. Both components share identical ECCN (EAR99) and HTSUS classifications, confirming regulatory equivalence. The MOC3020M maintains active product status with significantly higher inventory availability (78,400 units versus 19,238 units), providing supply chain continuity for production environments.

Selection between the original MOC3020 and MOC3020M substitute should prioritize the active-status component for new designs and ongoing production support. Existing designs currently utilizing MOC3020 may transition to MOC3020M without circuit modification, provided all specified electrical parameters remain within design tolerances.

Frequently Asked Questions (FAQ)

Q: Can MOC3020M directly replace MOC3020 in existing circuits?

A: Yes. Both components share identical isolation voltage (5300Vrms), output type (triac), channel configuration (single), and package format (6-DIP through-hole). Direct substitution is electrically and mechanically compatible.

Q: Why is MOC3020 classified as obsolete?

A: Obsolete status indicates the component is no longer manufactured by onsemi. MOC3020M from Fairchild Semiconductor provides functional equivalence with active manufacturing status.

Q: Are there any compliance differences between MOC3020 and MOC3020M?

A: No. Both components share identical ECCN (EAR99) and HTSUS (8541.49.8000) classifications, confirming regulatory equivalence for export and trade purposes.

Q: What is the significance of the 6-DIP package format?

A: The 6-DIP (0.300", 7.62mm) package specifies through-hole mounting on standard 0.1-inch pitch PCB layouts. Substitute components must maintain this package format to ensure mechanical compatibility without PCB redesign.

Q: Does the absence of zero-crossing detection affect substitution?

A: No. Both the original MOC3020 and MOC3020M lack zero-crossing circuitry. This parameter remains constant across all qualified substitutes and does not influence substitution eligibility.