MOC3061TM Optoisolator Equivalent & Substitute Parts

Part Overview

The MOC3061TM is a 4.17 kV optoisolator with triac output manufactured by onsemi, designed for galvanic isolation in AC switching applications. This component features a zero-crossing circuit, single channel configuration, and 6-DIP through-hole packaging. The part is currently listed as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. Substitute parts must maintain compatibility with the electrical isolation requirements, triac output characteristics, and mechanical form factor of the original design.

Substiute Parts

MOC3061TM

onsemiIn Stock: 1975MOC3061TM Datasheet

Current PartRFQ

MOC3061TVM

onsemiIn Stock: 1778MOC3061TVM Datasheet

DirectRFQ

EL3061M

Everlight Electronics Co LtdIn Stock: 1029EL3061M Datasheet

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EL3062M

Everlight Electronics Co LtdIn Stock: 967EL3062M Datasheet

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EL3063M

Everlight Electronics Co LtdIn Stock: 1660EL3063M Datasheet

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MOC3061G

Isocom Components 2004 LTDIn Stock: 1199MOC3061G Datasheet

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Q3062

QT Brightek (QTB)In Stock: 955Q3062 Datasheet

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Q3063

QT Brightek (QTB)In Stock: 737Q3063 Datasheet

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VO3063-X006

Vishay Semiconductor Opto DivisionIn Stock: 1843VO3063-X006 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the MOC3061TM is determined by the following critical parameters:

Electrical Compatibility Criteria:

• Voltage isolation rating must equal or exceed 4170 Vrms
• Triac output type with zero-crossing circuit functionality
• Off-state voltage rating of 600 V or higher
• LED trigger current (Ift) of 15 mA or less
• Forward voltage (Vf) within acceptable operating range
• DC forward current (If) rating of 60 mA or higher

Mechanical Compatibility Criteria:

• 6-DIP package form factor
• Through-hole mounting configuration
• Pin spacing of 0.400" (10.16 mm) or compatible

Thermal Compatibility Criteria:

• Operating temperature range must encompass or exceed -40°C to 85°C

Substitute parts are grouped into two categories: direct substitutes (identical electrical and mechanical specifications with different packaging or product status) and similar substitutes (enhanced electrical performance with compatible mechanical interfaces).

Parameter Comparison

Engineering Selection Recommendations

Direct Substitute (Preferred for Pin-Compatible Replacement):

MOC3061TVM is the direct substitute for MOC3061TM. Both parts are manufactured by onsemi with identical electrical specifications (4170 Vrms isolation, 600 V/µs dV/dt, 15 mA LED trigger current). The primary difference is product status: MOC3061TVM is active production while MOC3061TM is obsolete. MOC3061TVM maintains the same 6-DIP (0.400", 10.16 mm) package and operating temperature range (-40°C to 85°C). This part provides drop-in compatibility with existing PCB designs.

Enhanced Performance Substitutes (Higher Isolation Voltage):

Parts with 5000 Vrms or higher isolation voltage (EL3061M, EL3062M, EL3063M, MOC3061G, Q3062, Q3063, VO3063-X006) exceed the minimum 4170 Vrms requirement and are electrically compatible. These parts offer improved isolation margin and extended operating temperature ranges (-55°C to 100°C). Selection among these depends on specific application requirements:

• EL3061M, EL3062M, EL3063M, and VO3063-X006 maintain the 0.400" (10.16 mm) DIP spacing, ensuring compatibility with standard 6-DIP footprints.
• Q3062 and Q3063 use 0.300" (7.62 mm) DIP spacing, requiring PCB footprint verification before selection.
• MOC3061G offers 5300 Vrms isolation with dV/dt matching the original specification (600 V/µs).

All substitute parts maintain triac output with zero-crossing circuit functionality and are RoHS3 compliant with REACH unaffected status.

Frequently Asked Questions (FAQ)

Q: Can MOC3061TVM be used as a direct replacement for MOC3061TM?

A: Yes. MOC3061TVM is the direct substitute with identical electrical and mechanical specifications. The only difference is product status (active vs. obsolete). No design changes are required.

Q: What is the minimum isolation voltage required for substitution?

A: The MOC3061TM requires 4170 Vrms isolation. Any substitute must meet or exceed this specification. All listed substitutes meet this requirement.

Q: Are the Everlight EL306X and QT Brightek Q306X series compatible with the MOC3061TM footprint?

A: EL3061M, EL3062M, and EL3063M use standard 6-DIP (0.400", 10.16 mm) spacing and are footprint-compatible. Q3062 and Q3063 use 6-DIP (0.300", 7.62 mm) spacing and require PCB footprint verification before use.

Q: What is the significance of the LED trigger current (Ift) specification?

A: LED trigger current determines the input drive requirement. The MOC3061TM specifies 15 mA maximum. Substitutes with lower Ift values (5 mA or 10 mA) require less input current and are compatible with the original design. Higher Ift values would not be acceptable.

Q: Do all substitutes support zero-crossing circuit operation?

A: Yes. All listed substitute parts include zero-crossing circuit functionality, maintaining compatibility with AC switching applications that depend on this feature.

Q: What is the operating temperature range consideration for substitution?

A: The MOC3061TM operates from -40°C to 85°C. Substitutes with extended ranges (-55°C to 100°C) provide additional thermal margin but are fully compatible with the original temperature specification.

Q: Are there compliance or certification differences between substitutes?

A: All substitutes are RoHS3 compliant and REACH unaffected. Approval agencies vary by manufacturer (UL, VDE, CSA, DEMKO, FIMKO, NEMKO, SEMKO, cUR, UR). Verify specific certifications required for your application.

Q: What is the difference between MOC3061G and MOC3061TVM?

A: MOC3061G (Isocom) offers higher isolation voltage (5300 Vrms vs. 4170 Vrms) and extended temperature range (-40°C to 100°C). Both maintain 600 V/µs dV/dt and 15 mA LED trigger current. MOC3061G is a performance-enhanced alternative rather than a direct substitute.