MOC3041FM Equivalent & Substitute Parts

Part Overview

The MOC3041FM is a 7.5kV optoisolator with triac output manufactured by onsemi, designed for high-voltage isolation applications requiring zero-crossing detection. This component features a single channel configuration in a 6-SMD surface mount package. The part is currently classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity.

Substiute Parts

MOC3041FM

onsemiIn Stock: 1003MOC3041FM Datasheet

Current PartRFQ

MOC3041SM

onsemiIn Stock: 1542MOC3041SM Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The MOC3041SM qualifies as a functional substitute for the MOC3041FM based on the following alignment of critical electrical and mechanical parameters:

Matching Parameters:

• Output Type: Triac (both parts)
• Number of Channels: 1 (both parts)
• Zero Crossing Circuit: Yes (both parts)
• Current - LED Trigger (Ift) (Max): 15mA (both parts)
• Current - Hold (Ih) (Typ): 400µA (both parts)
• Current - DC Forward (If) (Max): 60 mA (both parts)
• Mounting Type: Surface Mount (both parts)
• Package / Case: 6-SMD, Gull Wing (both parts)
• Moisture Sensitivity Level (MSL): 1 (Unlimited) (both parts)
• Base Product Number: MOC304 (both parts)

Voltage Isolation Difference: The MOC3041SM provides 4170Vrms isolation versus the MOC3041FM's 7500Vpk isolation. This represents a lower isolation rating and must be evaluated against application requirements.

Parameter Comparison

Engineering Selection Recommendations

The MOC3041SM is an active product with current manufacturing support and ROHS3 compliance, whereas the MOC3041FM is obsolete. Both parts share identical mechanical packaging (6-SMD, Gull Wing) and core functional characteristics including triac output, single-channel configuration, and zero-crossing detection.

The primary technical distinction is the isolation voltage rating. The MOC3041SM specifies 4170Vrms isolation, which is lower than the MOC3041FM's 7500Vpk rating. Selection between these parts depends on whether the application's isolation voltage requirement can be satisfied by the 4170Vrms specification of the MOC3041SM.

The MOC3041SM provides additional documented parameters including static dV/dt rating (1kV/µs), forward voltage (1.25V typical), and operating temperature range (-40°C to 85°C), along with UL approval certification. These specifications support design validation and regulatory compliance documentation.

Frequently Asked Questions (FAQ)

Q: Can the MOC3041SM directly replace the MOC3041FM in existing designs?

A: Direct replacement is possible only if the application's isolation voltage requirement does not exceed 4170Vrms. The MOC3041SM provides lower isolation voltage than the MOC3041FM. If the design requires 7500Vpk isolation, the MOC3041SM is not suitable.

Q: What are the key compatibility factors between these parts?

A: Both parts share identical triac output configuration, single-channel design, zero-crossing circuit functionality, LED trigger current (15mA maximum), hold current (400µA typical), forward current (60mA maximum), and 6-SMD gull wing surface mount packaging. These parameters ensure mechanical and functional compatibility at the board level.

Q: Why is the MOC3041FM listed as obsolete?

A: The MOC3041FM is classified as obsolete by the manufacturer. The MOC3041SM represents the active product line continuation within the MOC304 base product family.

Q: Does the MOC3041SM meet current regulatory requirements?

A: The MOC3041SM is ROHS3 compliant and carries UL approval certification. The MOC3041FM does not specify these certifications in the provided data.

Q: Are there packaging differences between these parts?

A: Both parts use identical 6-SMD gull wing surface mount packaging. The MOC3041SM is supplied in tube packaging, while the MOC3041FM packaging format is not specified. This does not affect electrical or mechanical compatibility.