MOC3020FVM Optoisolator Equivalent & Substitute Parts

Part Overview

The MOC3020FVM 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 MOC3020FVM serves as a triac driver in isolation applications requiring high voltage isolation and single-channel switching capability.

Substiute Parts

MOC3020FVM

onsemiIn Stock: 944MOC3020FVM Datasheet

Current PartRFQ

MOC3020X

Isocom Components 2004 LTDIn Stock: 12751MOC3020X Datasheet

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MOC3021X

Isocom Components 2004 LTDIn Stock: 12863MOC3021X Datasheet

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MOC3022X

Isocom Components 2004 LTDIn Stock: 1621MOC3022X Datasheet

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MOC3023X

Isocom Components 2004 LTDIn Stock: 3960MOC3023X Datasheet

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VO3023-X001

Vishay Semiconductor Opto DivisionIn Stock: 12693VO3023-X001 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MOC3020FVM are identified based on the following core electrical and mechanical parameters:

Electrical Compatibility Criteria:

• Output Type: Triac (all substitutes maintain triac output)
• Number of Channels: 1 (single-channel requirement maintained)
• Voltage - Off State: 400 V (consistent across all parts)
• Current - Hold (Ih): 100µA (maintained across substitutes)
• Zero Crossing Circuit: No (consistent feature)

Substitution Constraints:

• Isolation voltage in substitutes (5300Vrms to 5000Vrms) is lower than the main part (7500Vpk), requiring application-level voltage compatibility verification
• LED trigger current (Ift) varies across substitutes (5mA to 30mA), affecting input drive requirements
• Mounting type differs: main part is surface mount (SMD); all substitutes are through-hole (DIP)
• Package form factor change from 6-SMD to 6-DIP requires PCB redesign

Active Substitute Parts:

• MOC3020X, MOC3021X, MOC3022X, MOC3023X (Isocom Components 2004 LTD)
• VO3023-X001 (Vishay Semiconductor Opto Division)

All substitute parts share the MOC302 base product number and maintain core triac optoisolator functionality.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The MOC3020FVM is obsolete. All substitute parts (MOC3020X, MOC3021X, MOC3022X, MOC3023X, VO3023-X001) are active products with ongoing manufacturer support and availability.

Compliance and Certification:

• Isocom Components substitutes (MOC3020X, MOC3021X, MOC3022X, MOC3023X) carry UR and VDE approvals with ROHS3 compliance
• Vishay VO3023-X001 carries broader certification coverage: CQC, CSA, cUL, FIMKO, UL, and VDE approvals
• All parts maintain REACH Unaffected status and EAR99 ECCN classification

Isolation Voltage Trade-off: Substitute parts operate at 5300Vrms or 5000Vrms isolation, compared to the main part's 7500Vpk. Applications requiring the full 7500Vpk isolation specification cannot use these substitutes without circuit redesign or additional isolation measures.

Input Drive Current Selection:

• MOC3020X: 30mA LED trigger (direct replacement for input drive requirements)
• MOC3021X: 15mA LED trigger (reduced input current requirement)
• MOC3022X: 10mA LED trigger (further reduced input current)
• MOC3023X and VO3023-X001: 5mA LED trigger (minimum input current requirement)

Lower LED trigger current substitutes reduce input drive circuit complexity and power consumption.

Packaging Transition: Substitution requires PCB redesign due to mounting type change from surface mount (SMD) to through-hole (DIP). This impacts assembly process, board layout, and mechanical integration.

Frequently Asked Questions (FAQ)

Q: Can MOC3020X, MOC3021X, MOC3022X, or MOC3023X directly replace MOC3020FVM without PCB modification?

A: No. The MOC3020FVM uses 6-SMD surface mount packaging, while all substitute parts use 6-DIP through-hole packaging. PCB redesign is required for footprint compatibility and component placement.

Q: What is the isolation voltage difference between MOC3020FVM and the substitute parts?

A: MOC3020FVM provides 7500Vpk isolation. Isocom substitutes (MOC3020X, MOC3021X, MOC3022X, MOC3023X) provide 5300Vrms isolation. Vishay VO3023-X001 provides 5000Vrms isolation. Applications requiring full 7500Vpk isolation must verify that lower isolation voltage substitutes meet system safety and regulatory requirements.

Q: Which substitute part requires the lowest input drive current?

A: MOC3023X and VO3023-X001 both require 5mA maximum LED trigger current, the lowest among available substitutes. MOC3020X requires 30mA, matching the original part's specification.

Q: Are all substitute parts RoHS compliant?

A: Isocom Components substitutes (MOC3020X, MOC3021X, MOC3022X, MOC3023X) are ROHS3 compliant. Vishay VO3023-X001 RoHS status is not specified in the provided data.

Q: What certifications do the substitute parts carry?

A: Isocom substitutes carry UR and VDE approvals. Vishay VO3023-X001 carries CQC, CSA, cUL, FIMKO, UL, and VDE approvals, providing broader regulatory coverage.

Q: Can I use MOC3023X in place of MOC3020X in the same circuit?

A: Both are triac output optoisolators with identical isolation voltage (5300Vrms), off-state voltage (400V), and hold current (100µA). The primary difference is LED trigger current: MOC3023X requires 5mA versus MOC3020X's 30mA. Circuit compatibility depends on input drive capability. If the input circuit can supply 5mA, MOC3023X is compatible. If the circuit is designed for 30mA input, MOC3020X is the appropriate choice.

Q: What is the inventory status of these substitute parts?

A: MOC3020X: 12,650 pcs; MOC3021X: 12,760 pcs; MOC3022X: 1,567 pcs; MOC3023X: 3,870 pcs; VO3023-X001: 12,680 pcs. All are listed as new original stock.