MOC3031VM Equivalent & Substitute Parts

Part Overview

The MOC3031VM is an optoisolator with triac output, rated for 4170Vrms isolation voltage, designed for single-channel applications requiring zero-crossing detection. This component is classified as obsolete, making identification of equivalent parts essential for ongoing system support and new design implementations. The MOC3031VM provides galvanic isolation between input and output circuits while delivering triac-based switching capability suitable for AC load control applications.

Substiute Parts

MOC3031VM

onsemiIn Stock: 767MOC3031VM Datasheet

Current PartRFQ

MOC3031M

onsemiIn Stock: 1478MOC3031M Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MOC3031VM is determined by strict equivalence across the following critical parameters:

• Isolation Voltage: 4170Vrms (mandatory match)
• Output Type: Triac configuration (mandatory match)
• Zero Crossing Circuit: Present (mandatory match)
• Number of Channels: Single channel (mandatory match)
• Package / Case: 6-DIP form factor (mandatory match)
• Electrical Characteristics: LED trigger current, hold current, forward voltage, and DC forward current must remain within specified ranges
• Operating Temperature Range: -40°C ~ 85°C (mandatory match)

The MOC3031M qualifies as a direct substitute based on identical electrical specifications and package configuration. The primary distinction is product status: MOC3031M is active, whereas MOC3031VM is obsolete.

Parameter Comparison

Engineering Selection Recommendations

The MOC3031M is the direct equivalent for MOC3031VM applications. Both components share identical electrical specifications, isolation ratings, and package configuration. The MOC3031M is preferred for new designs and ongoing production due to its active product status, ensuring continued availability and manufacturer support.

The MOC3031M maintains UL approval certification, satisfying regulatory requirements for applications requiring third-party validation. The MOC3031VM carries additional certifications (IEC/EN/DIN) which are not present in the MOC3031M specification data provided; however, the core electrical and functional parameters remain equivalent.

For systems currently using MOC3031VM, direct replacement with MOC3031M is electrically and mechanically compatible without circuit modification.

Frequently Asked Questions (FAQ)

Q: Can MOC3031M replace MOC3031VM in existing designs?

A: Yes. The MOC3031M is electrically and mechanically equivalent to MOC3031VM. Both components feature identical isolation voltage (4170Vrms), triac output configuration, zero-crossing detection, and 6-DIP package format. Direct substitution is possible without circuit redesign.

Q: What is the primary reason to substitute MOC3031VM?

A: MOC3031VM is classified as obsolete. MOC3031M is the active equivalent, ensuring long-term availability and manufacturer support for production and maintenance applications.

Q: Are there package differences between MOC3031VM and MOC3031M?

A: Both components use 6-DIP (0.300", 7.62mm) through-hole packaging. Pin configuration and mechanical dimensions are identical, enabling direct board-level replacement.

Q: Do the components have different certifications?

A: MOC3031VM lists IEC/EN/DIN and UL approvals. MOC3031M lists UL approval. Both meet UL certification requirements. Applications requiring specific regional certifications should verify compliance with local standards.

Q: What are the critical electrical parameters for substitution?

A: Substitution is valid when isolation voltage (4170Vrms), output type (triac), zero-crossing circuit presence, channel count (1), LED trigger current (15mA max), hold current (400µA typ), forward voltage (1.25V typ), and DC forward current (60mA max) remain constant across components.