MOC3083FR2VM Equivalent & Substitute Parts

Part Overview

The MOC3083FR2VM is an optoisolator with triac output manufactured by onsemi, designed for high-voltage isolation applications requiring 7500Vpk isolation rating. This component features a single channel with zero-crossing detection capability and is packaged in a 6-SMD surface mount configuration. The part is currently classified as obsolete, making identification of suitable substitute components essential for ongoing design support and production continuity.

Substiute Parts

MOC3083FR2VM

onsemiIn Stock: 1077MOC3083FR2VM Datasheet

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MOC3083SR2VM

onsemiIn Stock: 2088MOC3083SR2VM Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the MOC3083FR2VM is determined by the following critical parameters:

• Isolation Voltage Rating: The main part specifies 7500Vpk isolation. Substitute parts must maintain equivalent or superior isolation voltage to ensure safe operation in high-voltage isolation applications.
• Output Type: Triac output configuration is mandatory for compatibility with existing circuit designs.
• Zero Crossing Detection: The presence of zero-crossing circuitry is a functional requirement for this product category.
• Number of Channels: Single-channel configuration must be preserved.
• Package Type: 6-SMD, Gull Wing surface mount package ensures mechanical and electrical compatibility with existing PCB layouts.
• Current Specifications: LED trigger current (Ift), hold current (Ih), and forward current (If) must remain within specified limits.
• Off-State Voltage: 800V off-state voltage rating must be maintained.

The MOC3083SR2VM qualifies as a substitute based on matching output type, channel count, package configuration, and core electrical parameters. However, the isolation voltage rating differs between the two parts, requiring careful evaluation for specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

The MOC3083SR2VM is available as an active product from onsemi, providing supply continuity for applications currently using the obsolete MOC3083FR2VM. Both components share identical package configuration, channel count, and core current specifications.

The primary technical distinction is the isolation voltage rating: the MOC3083FR2VM provides 7500Vpk isolation, while the MOC3083SR2VM provides 4170Vrms isolation. Selection between these parts depends on the specific isolation voltage requirement of the application. Applications requiring the full 7500Vpk isolation rating cannot use the MOC3083SR2VM as a direct substitute.

The MOC3083SR2VM includes additional documented parameters (static dV/dt, forward voltage, and operating temperature range) and carries IEC/EN/DIN and UL approvals, along with RoHS3 compliance status. The MOC3083FR2VM carries no specified approval agencies or compliance certifications in the provided data.

Frequently Asked Questions (FAQ)

Q: Can the MOC3083SR2VM replace the MOC3083FR2VM in all applications?

A: No. The MOC3083SR2VM has a lower isolation voltage rating (4170Vrms) compared to the MOC3083FR2VM (7500Vpk). Substitution is only valid for applications where the lower isolation voltage meets system requirements.

Q: Are the package configurations identical?

A: Yes. Both parts use 6-SMD, Gull Wing surface mount packaging, ensuring mechanical compatibility with existing PCB layouts without requiring board redesign.

Q: What are the key electrical parameters that must match for substitution?

A: Critical matching parameters include output type (Triac), number of channels (1), zero-crossing detection capability, LED trigger current (5mA maximum), hold current (500µA typical), and forward current (60mA maximum).

Q: Does the MOC3083SR2VM have better compliance documentation?

A: Yes. The MOC3083SR2VM includes documented approval agencies (IEC/EN/DIN, UL) and RoHS3 compliance status, whereas the MOC3083FR2VM has no specified certifications in the provided data.

Q: What is the moisture sensitivity level for both parts?

A: Both the MOC3083FR2VM and MOC3083SR2VM have MSL 1 (Unlimited), indicating no moisture sensitivity restrictions for storage and handling.