MOC3020SR2VM Optoisolator Triac Output Equivalent & Substitute Parts

Part Overview

The MOC3020SR2VM is a 4170Vrms optoisolator with triac output manufactured by onsemi in 6-SMD surface mount packaging. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement. The MOC302 series from Lite-On Inc. provides active alternatives with enhanced isolation voltage ratings and broader temperature operating ranges, suitable for applications requiring reliable optoisolation in triac-driven circuits.

Substiute Parts

MOC3020SR2VM

onsemiIn Stock: 34499MOC3020SR2VM Datasheet

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MOC3020S

Lite-On Inc.In Stock: 1499MOC3020S Datasheet

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MOC3020S-TA1

Lite-On Inc.In Stock: 59996MOC3020S-TA1 Datasheet

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MOC3021S

Lite-On Inc.In Stock: 35264MOC3021S Datasheet

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MOC3021S-TA1

Lite-On Inc.In Stock: 100202MOC3021S-TA1 Datasheet

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MOC3022S

Lite-On Inc.In Stock: 25544MOC3022S Datasheet

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MOC3022S-TA1

Lite-On Inc.In Stock: 125385MOC3022S-TA1 Datasheet

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MOC3023S

Lite-On Inc.In Stock: 2651MOC3023S Datasheet

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MOC3023S-TA1

Lite-On Inc.In Stock: 155383MOC3023S-TA1 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MOC3020SR2VM are selected from the active MOC302x series manufactured by Lite-On Inc. based on the following substitution criteria:

Mandatory Matching Parameters:

• Output Type: Triac
• Number of Channels: 1
• Zero Crossing Circuit: No
• Voltage - Off State: 400 V
• Mounting Type: Surface Mount
• Package / Case: 6-SMD, Gull Wing
• Voltage - Forward (Vf) (Typ): 1.15V

Allowable Variation Parameters:

• Voltage - Isolation: Lite-On substitutes provide 5000Vrms, which exceeds the 4170Vrms requirement and is acceptable for direct replacement
• Current - LED Trigger (Ift) (Max): Lite-On variants range from 5mA to 30mA; lower trigger current values are acceptable as they represent improved sensitivity
• Current - Hold (Ih): Lite-On substitutes specify 250µA (Typ), which is higher than the 100µA (Typ) of the original but within acceptable operating margins
• Current - DC Forward (If) (Max): Lite-On substitutes specify 50 mA, which is lower than the 60 mA maximum of the original and acceptable
• Operating Temperature: Lite-On substitutes support -40°C ~ 100°C, extending the upper limit beyond the original 85°C specification

All substitute parts maintain identical electrical isolation, output topology, and mechanical form factor, ensuring direct PCB compatibility.

Parameter Comparison

Engineering Selection Recommendations

All Lite-On MOC302x variants listed above are direct substitutes for the obsolete MOC3020SR2VM. Selection among substitute options depends on application-specific LED trigger current requirements:

MOC3020S / MOC3020S-TA1: Identical 30mA LED trigger current specification to the original part. Recommended for designs where existing LED drive circuitry is optimized for 30mA trigger current.

MOC3021S / MOC3021S-TA1: 15mA LED trigger current. Suitable for applications requiring reduced LED drive power while maintaining full triac output capability.

MOC3022S / MOC3022S-TA1: 10mA LED trigger current. Appropriate for low-power LED drive applications and energy-efficient designs.

MOC3023S / MOC3023S-TA1: 5mA LED trigger current. Optimal for minimal LED power consumption and highly sensitive trigger applications.

All substitute parts are certified to CQC, CSA, TUV, UL, and VDE standards, with ROHS3 compliance. The enhanced 5000Vrms isolation voltage and extended -40°C ~ 100°C operating temperature range provide improved performance margins over the original specification.

Frequently Asked Questions (FAQ)

Q: Can MOC3020S replace MOC3020SR2VM directly on the PCB? A: Yes. Both parts use identical 6-SMD, Gull Wing packaging with matching pinout and electrical interface. No PCB modifications are required.

Q: What is the difference between MOC3020S and MOC3023S? A: The primary difference is LED trigger current: MOC3020S requires 30mA maximum, while MOC3023S requires only 5mA maximum. Both provide identical triac output isolation and voltage ratings. Selection depends on available LED drive current in your circuit.

Q: Is the higher 5000Vrms isolation voltage of Lite-On parts a problem? A: No. Higher isolation voltage is a performance enhancement. If your application requires 4170Vrms isolation, 5000Vrms provides additional safety margin and is fully compatible.

Q: What is the difference between MOC3020S and MOC3020S-TA1? A: Both parts are electrically identical. The -TA1 suffix indicates packaging format: MOC3020S is supplied in Tube, while MOC3020S-TA1 is supplied in Cut Tape (CT) & Digi-Reel format. Select based on your procurement and assembly requirements.

Q: Can I use MOC3023S-TA1 if my design was originally specified for MOC3020SR2VM? A: Yes, provided your LED drive circuit can supply the reduced 5mA trigger current. The lower trigger current requirement is an improvement that reduces LED power consumption while maintaining full triac output performance.

Q: Are all substitute parts RoHS compliant? A: Yes. All Lite-On MOC302x variants listed are ROHS3 compliant. The original MOC3020SR2VM does not specify RoHS status due to its obsolete classification.

Q: What is the inventory status of these substitute parts? A: All Lite-On MOC302x variants are active products with substantial inventory availability, ranging from 1,462 to 155,300 pieces in stock.