MOC3022TM Optoisolator Equivalent & Substitute Parts

Part Overview

The MOC3022TM is a 4.17kV isolation optoisolator with triac output manufactured by onsemi in a 6-DIP through-hole package. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. The MOC3022TM serves applications requiring galvanic isolation with triac-based switching control in industrial and consumer electronics.

Substiute Parts

MOC3022TM

onsemiIn Stock: 917MOC3022TM Datasheet

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MOC3022TVM

onsemiIn Stock: 1397MOC3022TVM Datasheet

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IS3020

Isocom Components 2004 LTDIn Stock: 45237IS3020 Datasheet

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IS3021

Isocom Components 2004 LTDIn Stock: 45365IS3021 Datasheet

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IS3022

Isocom Components 2004 LTDIn Stock: 45455IS3022 Datasheet

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MOC3020G

Isocom Components 2004 LTDIn Stock: 1142MOC3020G Datasheet

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MOC3021G

Isocom Components 2004 LTDIn Stock: 1174MOC3021G Datasheet

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MOC3022G

Isocom Components 2004 LTDIn Stock: 1031MOC3022G Datasheet

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MOC3023G

Isocom Components 2004 LTDIn Stock: 1193MOC3023G Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the MOC3022TM is determined by the following critical parameters:

• Output Type: Triac (all substitutes must be triac output)
• Number of Channels: 1 (single channel isolation)
• Mounting Type: Through Hole (6-DIP package)
• Voltage - Off State: 400 V (maximum off-state voltage rating)
• Current - LED Trigger (Ift): 10mA maximum (input trigger current specification)
• Current - Hold (Ih): 100µA typical (holding current requirement)

Substitutes are grouped into two categories based on isolation voltage rating:

Category A - Direct Voltage Match (4170Vrms): MOC3022TVM maintains identical isolation voltage specification and is the primary direct substitute.

Category B - Higher Isolation Voltage (5300Vrms or 7.5Vpk): IS3020, IS3021, IS3022, MOC3020G, MOC3021G, MOC3022G, and MOC3023G provide equal or superior isolation performance and are functionally compatible where isolation voltage is not a limiting design constraint.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: MOC3022TVM is the recommended direct replacement. It maintains identical electrical specifications (4170Vrms isolation, 10mA trigger current, 60mA forward current) and package dimensions (6-DIP 0.400"). MOC3022TVM is active product status with ROHS3 compliance and IEC/EN/DIN certification in addition to UL approval.

Secondary Substitutes with Higher Isolation Voltage: IS3022, MOC3022G, and MOC3023G are functionally compatible alternatives. IS3022 and MOC3022G match the 10mA trigger current specification. MOC3023G offers the lowest trigger current at 5mA. All three are active products with ROHS3 compliance. IS3022 uses a smaller 6-DIP package (0.300" vs 0.400"), requiring PCB layout verification. MOC3022G and MOC3023G maintain the 0.400" package footprint.

Extended Compatibility Options: IS3021 (15mA trigger), IS3020 (30mA trigger), MOC3021G (15mA trigger), and MOC3020G (30mA trigger) provide higher isolation voltage ratings and extended operating temperature to 100°C. These are suitable where trigger current tolerance permits and isolation margin is beneficial.

All substitute parts maintain 400V off-state voltage rating, 100µA holding current, and through-hole mounting compatibility with the original MOC3022TM.

Frequently Asked Questions (FAQ)

Q: Can MOC3022TVM be used as a direct replacement for MOC3022TM?

A: Yes. MOC3022TVM is the direct equivalent with identical isolation voltage (4170Vrms), trigger current (10mA), forward current (60mA), and package dimensions (6-DIP 0.400"). The primary difference is product status (active vs. obsolete) and compliance certifications (ROHS3, IEC/EN/DIN).

Q: What is the difference between the onsemi and Isocom substitute parts?

A: onsemi MOC3022TVM maintains the original 4170Vrms isolation specification. Isocom IS3022 and MOC3022G series provide higher isolation voltage (5300Vrms or 7.5Vpk) with comparable or superior electrical performance. All are functionally compatible triac output optoisolators in 6-DIP packages.

Q: Are the Isocom IS3020/IS3021/IS3022 parts compatible with the MOC3022TM?

A: Yes, with package consideration. IS3020, IS3021, and IS3022 use a smaller 6-DIP package (0.300" vs. 0.400"). Electrical compatibility is confirmed for triac output, 400V off-state, and 100µA holding current. PCB layout must accommodate the smaller package footprint.

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

A: Trigger current determines the LED input current required to activate the triac output. MOC3022TM and MOC3022TVM require 10mA maximum. IS3021 and MOC3021G require 15mA. IS3020 and MOC3020G require 30mA. MOC3023G requires only 5mA. Lower trigger current reduces input circuit power consumption; higher trigger current requires stronger input drive capability.

Q: Can I use MOC3023G instead of MOC3022TM?

A: Yes. MOC3023G is functionally compatible with superior isolation voltage (7.5Vpk) and lower trigger current (5mA). It maintains the 0.400" package footprint, 400V off-state rating, and 100µA holding current. The lower trigger current may reduce input circuit design margin if the original design was optimized for 10mA.

Q: What is the difference between 4170Vrms, 5300Vrms, and 7.5Vpk isolation ratings?

A: These represent different isolation voltage specifications. 4170Vrms and 5300Vrms are RMS voltage ratings. 7.5Vpk is a peak voltage rating. All three ratings indicate the maximum voltage that can be safely isolated between input and output circuits. Higher ratings provide greater isolation margin and are backward compatible with designs requiring lower isolation voltage.

Q: Are all substitute parts ROHS3 compliant?

A: MOC3022TVM, IS3022, IS3021, IS3020, MOC3022G, MOC3021G, MOC3020G, and MOC3023G are all ROHS3 compliant. The original MOC3022TM does not specify RoHS status. ROHS3 compliance is required for new designs and production in regulated markets.

Q: What certifications do the substitute parts carry?

A: MOC3022TVM carries UL and IEC/EN/DIN certifications. Isocom IS3020, IS3021, and IS3022 do not specify approval agencies. MOC3020G, MOC3021G, MOC3022G, and MOC3023G carry UL and VDE certifications. Verify certification requirements for your specific application.

Q: Can I use parts with higher operating temperature range?

A: Yes. IS3020, IS3021, IS3022, MOC3020G, MOC3021G, MOC3022G, and MOC3023G operate to 100°C versus MOC3022TM at 85°C. Higher temperature rating provides additional thermal margin and is backward compatible with designs operating within the original -40°C to 85°C range.