MOC223R2VM Equivalent & Substitute Parts

Part Overview

The MOC223R2VM is an optoisolator with Darlington output and base connection, rated for 2500Vrms isolation voltage. Manufactured by onsemi in 8-SOIC surface mount package, this component provides galvanic isolation for single-channel applications with 500% minimum current transfer ratio at 1mA input. The part is currently obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity.

Substiute Parts

MOC223R2VM

onsemiIn Stock: 829MOC223R2VM Datasheet

Current PartRFQ

MOC223R2M

onsemiIn Stock: 5998MOC223R2M Datasheet

Parametric EquivalentRFQ

IL221AT

Vishay Semiconductor Opto DivisionIn Stock: 2554IL221AT Datasheet

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IL222AT

Vishay Semiconductor Opto DivisionIn Stock: 2890IL222AT Datasheet

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IL223AT

Vishay Semiconductor Opto DivisionIn Stock: 9416IL223AT Datasheet

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VO221AT

Vishay Semiconductor Opto DivisionIn Stock: 2252VO221AT Datasheet

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VO222AT

Vishay Semiconductor Opto DivisionIn Stock: 955VO222AT Datasheet

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VO223AT

Vishay Semiconductor Opto DivisionIn Stock: 738VO223AT Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution for the MOC223R2VM is determined by the following critical parameters:

Parametric Equivalent (Direct Replacement):

• Identical isolation voltage: 2500Vrms
• Identical current transfer ratio: 500% @ 1mA
• Identical package: 8-SOIC
• Identical output type: Darlington with Base
• Identical maximum output voltage: 30V
• Identical maximum output current: 150mA
• Identical Vce saturation: 1V

Similar Substitutes (Higher Isolation Rating):

• Isolation voltage: 4000Vrms (higher than 2500Vrms requirement)
• Same package: 8-SOIC
• Same output type: Darlington with Base
• Same maximum output voltage: 30V
• Same Vce saturation: 1V
• Varying current transfer ratios: 100%, 200%, or 500% @ 1mA
• Reduced maximum output current: 50mA (lower than 150mA)

Parameter Comparison

Engineering Selection Recommendations

Direct Replacement (Parametric Equivalent): MOC223R2M is the primary substitute for MOC223R2VM. Both parts share identical electrical specifications including 2500Vrms isolation voltage, 500% current transfer ratio, 150mA output current, and 8-SOIC package. MOC223R2M is currently in active production status with ROHS3 compliance, providing design continuity with no parameter derating required.

Higher Isolation Rating Alternatives: IL223AT, VO223AT, IL222AT, VO222AT, IL221AT, and VO221AT from Vishay Semiconductor Opto Division provide 4000Vrms isolation voltage, exceeding the 2500Vrms requirement of the original part. These alternatives are suitable for applications where enhanced isolation margin is acceptable. Selection among these parts depends on current transfer ratio requirements and output current capacity.

IL223AT and VO223AT match the 500% current transfer ratio specification. IL222AT and VO222AT provide 200% current transfer ratio. IL221AT and VO221AT provide 100% current transfer ratio.

VO-series parts (VO221AT, VO222AT, VO223AT) feature faster switching times (3µs turn-on/off) compared to IL-series parts, but are limited to 50mA maximum output current. Applications requiring 150mA output current must use MOC223R2M or IL-series parts.

All substitute parts maintain 8-SOIC package compatibility, 30V maximum output voltage, and 1V maximum Vce saturation. All active substitutes carry ROHS3 compliance certification.

Frequently Asked Questions (FAQ)

Q: Can MOC223R2M directly replace MOC223R2VM without circuit modification? A: Yes. MOC223R2M is a parametric equivalent with identical isolation voltage (2500Vrms), current transfer ratio (500% @ 1mA), output current (150mA), and 8-SOIC package. No design changes are required.

Q: What is the primary advantage of Vishay IL-series and VO-series substitutes? A: These parts provide 4000Vrms isolation voltage, 60% higher than the original 2500Vrms specification. This increased isolation margin may benefit applications requiring enhanced safety margins or operating in high-voltage environments.

Q: Why do VO-series parts have lower maximum output current (50mA vs 150mA)? A: VO-series parts are optimized for faster switching performance (3µs vs 10µs turn-on time). Applications requiring 150mA output current must use MOC223R2M or IL-series alternatives.

Q: Are all substitute parts RoHS compliant? A: All active substitute parts (MOC223R2M, IL221AT, IL222AT, IL223AT, VO221AT, VO222AT, VO223AT) are ROHS3 compliant. The original MOC223R2VM does not specify RoHS status.

Q: Can I use a 4000Vrms part in a circuit designed for 2500Vrms isolation? A: Yes. Higher isolation voltage rating is backward compatible. A 4000Vrms optoisolator meets or exceeds all isolation requirements of a 2500Vrms design. No circuit modification is necessary.

Q: What is the difference between IL-series and VO-series from Vishay? A: Both are Vishay Semiconductor Opto Division products in 8-SOIC package. VO-series offers faster switching times (3µs) but limited to 50mA output current. IL-series has unspecified switching times but supports higher output current levels. Selection depends on application timing and current requirements.

Q: Is the operating temperature range a factor in substitution? A: MOC223R2VM, MOC223R2M, VO221AT, VO222AT, and VO223AT operate from -40°C to 100°C. IL221AT, IL222AT, and IL223AT extend the lower temperature limit to -55°C. For applications below -40°C, IL-series parts are required.