MOC3042FR2VM Equivalent & Substitute Parts

Part Overview

The MOC3042FR2VM is an optoisolator with triac output manufactured by onsemi, designed for applications requiring galvanic isolation up to 7500Vpk with single-channel triac switching capability. This component features a zero-crossing circuit and is packaged in a 6-SMD, Gull Wing surface mount configuration.

The MOC3042FR2VM is classified as obsolete. Identifying suitable substitute parts is necessary to maintain design continuity and ensure component availability for new production runs and field replacements.

Substiute Parts

MOC3042FR2VM

onsemiIn Stock: 937MOC3042FR2VM Datasheet

Current PartRFQ

MOC3042SR2VM

onsemiIn Stock: 3011MOC3042SR2VM Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MOC3042FR2VM is determined by the following critical parameters:

• Output Type: Triac
• Number of Channels: 1
• Zero Crossing Circuit: Yes
• Mounting Type: Surface Mount
• Package / Case: 6-SMD, Gull Wing
• Voltage - Off State: 400 V
• Current - LED Trigger (Ift) (Max): 10mA
• Current - Hold (Ih) (Typ): 400µA
• Current - DC Forward (If) (Max): 60 mA

The MOC3042SR2VM qualifies as a substitute part. It maintains identical functional architecture (single-channel triac output with zero-crossing circuit), identical package configuration (6-SMD, Gull Wing), and matching electrical characteristics for trigger current, hold current, and forward current specifications. The MOC3042SR2VM is classified as active product status, ensuring ongoing availability and support.

Parameter Comparison

Engineering Selection Recommendations

The MOC3042SR2VM is the designated substitute for the obsolete MOC3042FR2VM. Both components share the same base product number (MOC304) and maintain functional equivalence across all critical electrical and mechanical parameters.

The MOC3042SR2VM offers the advantage of active product status, ensuring continued manufacturer support, availability, and compliance with current industry standards. Both parts carry REACH Unaffected status and EAR99 ECCN classification. The MOC3042SR2VM additionally provides IEC/EN/DIN and UL approval agency certifications and ROHS3 compliance, meeting modern regulatory requirements.

The primary design consideration is the isolation voltage specification: the MOC3042FR2VM provides 7500Vpk isolation, while the MOC3042SR2VM provides 4170Vrms isolation. Applications requiring isolation voltage exceeding 4170Vrms must evaluate whether the reduced isolation rating of the substitute part meets system requirements.

Frequently Asked Questions (FAQ)

Q: Can the MOC3042SR2VM directly replace the MOC3042FR2VM in existing designs?

A: Direct replacement is possible for applications where the isolation voltage requirement does not exceed 4170Vrms. Both parts maintain identical package configuration (6-SMD, Gull Wing), trigger current specifications (10mA maximum), hold current (400µA typical), and forward current ratings (60mA maximum). No PCB layout modifications are required.

Q: What is the difference in isolation voltage between these parts?

A: The MOC3042FR2VM provides 7500Vpk isolation voltage, while the MOC3042SR2VM provides 4170Vrms isolation voltage. The selection between these specifications depends on the galvanic isolation requirements of the target application. Applications designed for the higher isolation rating of the MOC3042FR2VM must confirm that 4170Vrms isolation is sufficient before implementing the MOC3042SR2VM.

Q: Are there packaging differences between the main part and substitute?

A: Both parts use identical 6-SMD, Gull Wing surface mount packaging. The MOC3042FR2VM is supplied in bulk packaging, while the MOC3042SR2VM is supplied in Tape & Reel (TR) format. This difference affects procurement and assembly processes but does not impact electrical or mechanical compatibility.

Q: What compliance certifications does the substitute part carry?

A: The MOC3042SR2VM carries IEC/EN/DIN and UL approval agency certifications and is ROHS3 compliant. Both parts maintain REACH Unaffected status and EAR99 ECCN classification. The substitute part meets current regulatory and industry standards for optoisolator components.

Q: Why is the MOC3042FR2VM classified as obsolete?

A: The MOC3042FR2VM is no longer in active production. The MOC3042SR2VM represents the current active equivalent from onsemi's product line, offering improved compliance certifications and ongoing manufacturer support while maintaining functional compatibility across all critical electrical parameters.