MOC3020M Equivalent & Substitute Parts

Part Overview

The MOC3020M is an optoisolator with triac output manufactured by Lite-On Inc., designed for applications requiring galvanic isolation up to 5000Vrms. This component features a single-channel triac output in a 6-DIP through-hole package and maintains active product status with full RoHS3 compliance. Substitute parts are necessary when addressing supply constraints, lead time requirements, or specific application parameters that align with alternative MOC302 series variants from different manufacturers.

Substiute Parts

MOC3020M

Lite-On Inc.In Stock: 78428MOC3020M Datasheet

Current PartRFQ

MOC3020M

Fairchild SemiconductorIn Stock: 78475MOC3020M Datasheet

DirectRFQ

MOC3020TVM

onsemiIn Stock: 2092MOC3020TVM Datasheet

MFR RecommendedRFQ

MOC3021TVM

Fairchild SemiconductorIn Stock: 12939MOC3021TVM Datasheet

MFR RecommendedRFQ

MOC3022TVM

onsemiIn Stock: 1397MOC3022TVM Datasheet

MFR RecommendedRFQ

MOC3023TVM

onsemiIn Stock: 6654MOC3023TVM Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MOC3020M is determined by the following critical parameters:

Mandatory Compatibility Criteria:

• Output Type: Triac
• Number of Channels: 1
• Package / Case: 6-DIP (0.400", 10.16mm)
• Mounting Type: Through Hole
• Base Product Number: MOC302 series

Electrical Parameter Ranges for Substitution:

• Voltage - Isolation: Minimum 4170Vrms (all substitutes meet or exceed this threshold)
• Voltage - Off State: 400 V (consistent across all parts)
• Voltage - Forward (Vf): 1.15V (consistent across all parts)
• Current - DC Forward (If) (Max): 50-60 mA range acceptable
• Operating Temperature: -40°C minimum required; upper limit may vary (85°C or 100°C)

All listed substitute parts maintain the same mechanical footprint, electrical isolation class, and triac output topology. Variations in LED trigger current (Ift) and hold current (Ih) reflect design differences within the MOC302 family but do not preclude substitution when application requirements are met.

Parameter Comparison

Engineering Selection Recommendations

All substitute parts listed maintain active product status and are manufactured by established semiconductor suppliers. Selection among MOC3020M, MOC3020TVM, MOC3021TVM, MOC3022TVM, and MOC3023TVM should be based on the following criteria:

Isolation Voltage Requirements: The MOC3020M (Lite-On) and MOC3020M (Fairchild) provide the highest isolation ratings at 5000Vrms and 5300Vrms respectively. Applications requiring isolation voltages below 5000Vrms may use onsemi or Fairchild variants rated at 4170Vrms without performance degradation.

Operating Temperature Range: The MOC3020M (Lite-On) supports operation to 100°C. Substitute parts from onsemi and Fairchild are rated to 85°C maximum. Applications requiring extended high-temperature operation above 85°C must retain the Lite-On MOC3020M.

Regulatory Compliance: All parts carry RoHS3 compliance where specified. Fairchild MOC3020M and MOC3021TVM do not list RoHS status in provided data. onsemi variants (MOC3020TVM, MOC3022TVM, MOC3023TVM) explicitly confirm ROHS3 compliance. For applications with mandatory RoHS requirements, onsemi parts are preferred.

LED Trigger Current Sensitivity: MOC3023TVM requires only 5mA LED trigger current, MOC3022TVM requires 10mA, MOC3021TVM requires 15mA, and MOC3020TVM requires 30mA. Applications with limited LED drive capability should prioritize MOC3023TVM or MOC3022TVM.

Frequently Asked Questions (FAQ)

Q: Can MOC3020TVM replace MOC3020M in all applications?

A: MOC3020TVM is mechanically and functionally compatible with MOC3020M. Both feature identical 6-DIP packaging, single-channel triac output, and 400V off-state voltage. The primary difference is isolation voltage (4170Vrms vs. 5000Vrms). Substitution is valid when application isolation requirements do not exceed 4170Vrms and operating temperature does not exceed 85°C.

Q: What is the difference between MOC3021TVM, MOC3022TVM, and MOC3023TVM?

A: These three onsemi variants differ in LED trigger current requirements. MOC3021TVM requires 15mA maximum, MOC3022TVM requires 10mA maximum, and MOC3023TVM requires 5mA maximum. All three maintain identical isolation voltage (4170Vrms), off-state voltage (400V), and 6-DIP package. Selection depends on available LED drive current in the application circuit.

Q: Is the 6-DIP package identical across all substitute parts?

A: Yes. All listed parts use 6-DIP (0.400", 10.16mm) through-hole packaging with identical mechanical footprint and pin configuration. PCB layout and component placement require no modification when substituting between any of these parts.

Q: What happens if I use a substitute part with lower isolation voltage than the original MOC3020M?

A: Using a part with lower isolation voltage in an application designed for 5000Vrms isolation creates a safety and reliability risk. The substitute part may fail under normal operating conditions if isolation voltage is exceeded. Isolation voltage must meet or exceed application requirements.

Q: Are all substitute parts currently in stock?

A: Product availability varies. MOC3020M (Lite-On) has 78,400 units in stock. MOC3023TVM has 6,585 units, MOC3021TVM has 12,906 units, MOC3020TVM has 2,053 units, and MOC3022TVM has 1,335 units. Verify current inventory status with your supplier before finalizing procurement decisions.

Q: Can I use MOC3020M (Fairchild) as a direct replacement for MOC3020M (Lite-On)?

A: MOC3020M from Fairchild Semiconductor is mechanically and electrically compatible with the Lite-On version. Both share identical part numbering, 6-DIP packaging, and triac output configuration. Fairchild's version is rated at 5300Vrms isolation, exceeding the Lite-On specification of 5000Vrms. Substitution is valid for all applications.