MOC3032FM Equivalent & Substitute Parts

Part Overview

The MOC3032FM is a 7.5kV isolation optoisolator with triac output manufactured by onsemi in a 6-SMD surface mount package. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The MOC3032FM provides galvanic isolation suitable for AC switching applications requiring high voltage isolation and zero-crossing detection capability.

Substiute Parts

MOC3032FM

onsemiIn Stock: 917MOC3032FM Datasheet

Current PartRFQ

MOC3032SM

onsemiIn Stock: 1524MOC3032SM Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MOC3032FM is determined by the following critical parameters:

• Output Type: Must be Triac output for AC switching functionality
• Number of Channels: Must be single channel (1)
• Zero Crossing Circuit: Must include zero-crossing detection
• Mounting Type: Must be Surface Mount to maintain PCB compatibility
• Package / Case: Must be 6-SMD, Gull Wing for footprint compatibility
• Voltage - Off State: Must support 250 V minimum
• Current Specifications: LED trigger current (Ift) and hold current (Ih) must be compatible with existing circuit design

The MOC3032SM qualifies as a direct substitute based on matching output type, channel count, zero-crossing capability, mounting type, and package configuration. Isolation voltage differs between the two parts; this represents a key design consideration for substitution decisions.

Parameter Comparison

Engineering Selection Recommendations

The MOC3032SM is the qualified substitute for the obsolete MOC3032FM. Both components share identical functional specifications for output type, channel configuration, zero-crossing detection, current ratings, and package geometry.

The primary technical difference is isolation voltage rating: MOC3032FM specifies 7500Vpk while MOC3032SM specifies 4170Vrms. Selection between these parts depends on the isolation voltage requirement of the target application.

The MOC3032SM holds active product status with UL approval and ROHS3 compliance, making it suitable for new designs and production environments requiring current component certifications. The MOC3032FM, classified as obsolete, should be replaced in active designs.

Frequently Asked Questions (FAQ)

Q: Can MOC3032SM directly replace MOC3032FM in existing designs?

A: Direct replacement is possible if the application isolation voltage requirement does not exceed 4170Vrms. The MOC3032SM meets all functional and package requirements of the MOC3032FM. Applications requiring isolation voltage above 4170Vrms must retain the MOC3032FM or identify alternative components with higher isolation ratings.

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

A: MOC3032FM provides 7500Vpk isolation while MOC3032SM provides 4170Vrms isolation. These represent different measurement standards (peak voltage versus RMS voltage). The selection depends on the specific isolation voltage requirement of the circuit design.

Q: Are the package footprints identical?

A: Yes. Both MOC3032FM and MOC3032SM use 6-SMD, Gull Wing surface mount packages with identical pin configurations and PCB footprints.

Q: What certifications apply to the MOC3032SM?

A: The MOC3032SM holds UL approval and is ROHS3 compliant. The MOC3032FM does not list approval agency certification in the provided specifications.

Q: Why is MOC3032FM classified as obsolete?

A: The MOC3032FM is listed as obsolete by the manufacturer. The MOC3032SM is the active equivalent product and should be used for new designs and production applications.