MOC3012FR2M Optoisolator Triac Output Equivalent & Substitute Parts

Part Overview

The MOC3012FR2M is a 7.5kV isolation optoisolator with triac output manufactured by onsemi in 6-SMD surface mount packaging. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. The part operates as a single-channel optoisolator with 250V off-state voltage rating and 5mA maximum LED trigger current, suitable for AC switching applications requiring galvanic isolation.

Substiute Parts

MOC3012FR2M

onsemiIn Stock: 844MOC3012FR2M Datasheet

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MOC3012SR2M

onsemiIn Stock: 30500MOC3012SR2M Datasheet

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EL3010

Everlight Electronics Co LtdIn Stock: 1951EL3010 Datasheet

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EL3011

Everlight Electronics Co LtdIn Stock: 964EL3011 Datasheet

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EL3012

Everlight Electronics Co LtdIn Stock: 1986EL3012 Datasheet

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H11J1

Isocom Components 2004 LTDIn Stock: 851H11J1 Datasheet

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H11J2

Isocom Components 2004 LTDIn Stock: 1032H11J2 Datasheet

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H11J3

Isocom Components 2004 LTDIn Stock: 716H11J3 Datasheet

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H11J4

Isocom Components 2004 LTDIn Stock: 1121H11J4 Datasheet

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H11J5

Isocom Components 2004 LTDIn Stock: 1203H11J5 Datasheet

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MOC3009

onsemiIn Stock: 2042MOC3009 Datasheet

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MOC3010

Fairchild SemiconductorIn Stock: 18652MOC3010 Datasheet

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MOC3011

onsemiIn Stock: 22134MOC3011 Datasheet

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MOC3012

Texas InstrumentsIn Stock: 1522MOC3012 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution for the MOC3012FR2M is determined by the following critical parameters:

Primary Substitution Criteria:

• Output Type: Triac (mandatory)
• Number of Channels: 1 (mandatory)
• Voltage - Off State: 250V (mandatory)
• Current - Hold (Ih): 100µA typical (mandatory)
• Moisture Sensitivity Level: 1 (Unlimited) (mandatory)

Secondary Compatibility Factors:

• Voltage - Isolation: Minimum 5000Vrms or equivalent peak voltage
• Current - LED Trigger (Ift): Maximum 5mA to 15mA acceptable range
• Current - DC Forward (If): Maximum 50mA to 60mA acceptable range

Packaging Considerations:

• Surface mount (6-SMD) substitutes maintain direct PCB compatibility
• Through-hole (6-DIP) substitutes require board redesign but offer functional equivalence
• onsemi MOC3012SR2M provides direct form-factor compatibility as an active product

Substitutes are grouped into two categories: direct surface-mount replacements and through-hole alternatives with equivalent electrical performance.

Parameter Comparison

Engineering Selection Recommendations

Direct Surface-Mount Replacement (No Board Redesign Required):

MOC3012SR2M is the primary substitute for MOC3012FR2M. Both are onsemi products in 6-SMD surface-mount packaging with identical form factor and pinout. The MOC3012SR2M is currently active in production with UL approval and ROHS3 compliance. The isolation voltage is reduced from 7500Vpk to 4170Vrms, which is acceptable for applications not requiring the full 7.5kV isolation specification. All other critical parameters—off-state voltage, LED trigger current, hold current, and forward current—remain compatible.

Through-Hole Alternatives (Board Redesign Required):

For applications permitting through-hole packaging, the following active products provide functional equivalence:

Everlight EL3012 matches the 5mA LED trigger current specification exactly and maintains 250V off-state voltage with 5000Vrms isolation. The hold current increases to 250µA typical, which remains within acceptable operating margins. ROHS3 compliance and multiple international certifications (CSA, DEMKO, FIMKO, NEMKO, SEMKO, UL) are provided.

Isocom H11J series components (H11J1, H11J3, H11J4) offer 5300Vrms isolation with 250V off-state voltage and 100µA hold current matching the original specification. These parts carry UL and VDE approvals with ROHS3 compliance. LED trigger current ranges from 10mA to 15mA, requiring circuit evaluation for applications with strict current budgets.

Obsolete Parts to Avoid:

MOC3009 is obsolete and should not be selected for new designs despite functional similarity. Prioritize active products with current manufacturing status and available certifications.

Frequently Asked Questions (FAQ)

Q: Can MOC3012SR2M directly replace MOC3012FR2M without circuit modification?

A: Yes, for most applications. MOC3012SR2M is a direct pin-compatible substitute in identical 6-SMD surface-mount packaging. The primary difference is reduced isolation voltage (4170Vrms vs. 7500Vpk). If your circuit operates below 4170Vrms isolation requirement, no modification is necessary. If full 7.5kV isolation is mandatory, through-hole alternatives must be evaluated.

Q: What is the difference between the Everlight EL3010, EL3011, and EL3012 variants?

A: All three are 5000Vrms through-hole optoisolators with identical isolation and off-state voltage. The primary difference is LED trigger current: EL3012 requires 5mA maximum, EL3011 requires 10mA maximum, and EL3010 requires 15mA maximum. Select based on your input circuit's current-sourcing capability. EL3012 is the closest match to MOC3012FR2M specifications.

Q: Why do the Isocom H11J series parts have lower maximum forward current (50mA vs. 60mA)?

A: The H11J series is rated for 50mA maximum DC forward current, compared to 60mA for MOC3012FR2M. This difference is acceptable for most AC switching applications. Verify your input LED current requirement does not exceed 50mA before selection.

Q: Can I use a through-hole part on a surface-mount PCB?

A: No. Through-hole components require plated holes and different PCB layout. Board redesign is necessary. If board redesign is not feasible, MOC3012SR2M is the only viable substitute maintaining the original 6-SMD surface-mount form factor.

Q: Are all substitute parts ROHS3 compliant?

A: MOC3012SR2M, all Everlight EL301x variants, and all Isocom H11J series parts are ROHS3 compliant. MOC3009 (obsolete) does not specify ROHS status and should not be used in new designs.

Q: What certifications should I verify for my application?

A: MOC3012SR2M carries UL approval. Everlight EL301x parts carry CSA, DEMKO, FIMKO, NEMKO, SEMKO, and UL certifications. Isocom H11J series carries UL and VDE certifications. Confirm your application's required certifications and select accordingly.