MCT22023S Equivalent & Substitute Parts

Part Overview

The MCT22023S is an optoisolator transistor with base output manufactured by onsemi, designed for high-voltage isolation applications requiring 5300Vrms isolation rating. This component features a single channel with transistor output and integrated base connection, housed in a 6-SMD surface mount package. The part is currently classified as obsolete, making identification of compatible substitute components essential for ongoing system support and new design implementations.

Substiute Parts

MCT22023S

onsemiIn Stock: 877MCT22023S Datasheet

Current PartRFQ

CNY172SVM

onsemiIn Stock: 1684CNY172SVM Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the MCT22023S is determined by the following critical parameters:

• Isolation Voltage Rating: The substitute must maintain isolation capability at or above the application requirement. The MCT22023S specifies 5300Vrms isolation.
• Output Configuration: The substitute must provide transistor output with base connection to maintain circuit compatibility.
• Current Transfer Ratio: The substitute must operate within the specified CTR range (63% to 125% @ 10mA) to ensure consistent signal transfer characteristics.
• Output Voltage and Current Ratings: Maximum output voltage and per-channel current capacity must meet or exceed application demands.
• Package Compatibility: Surface mount 6-SMD Gull Wing package ensures mechanical and thermal compatibility with existing PCB layouts.
• Operating Temperature Range: The substitute must support the required temperature envelope for the application environment.

The CNY172SVM qualifies as a substitute based on matching output configuration, package type, and electrical performance within acceptable parameters, despite lower isolation voltage rating.

Parameter Comparison

Engineering Selection Recommendations

The CNY172SVM is available as an active product from onsemi, providing supply continuity for applications currently using the obsolete MCT22023S. Both components share identical package geometry, channel configuration, and output transistor characteristics.

Selection of CNY172SVM requires verification that the application isolation voltage requirement does not exceed 4170Vrms. The CNY172SVM provides higher maximum output voltage (70V versus 30V), which may offer additional design margin in certain applications. The operating temperature range of the CNY172SVM (-40°C to 100°C) is narrower than the MCT22023S (-55°C to 100°C), requiring confirmation of minimum temperature compatibility.

The CNY172SVM carries RoHS3 compliance certification, whereas the MCT22023S status is not specified. Both components are REACH Unaffected and classified under ECCN EAR99.

Frequently Asked Questions (FAQ)

Q: Can CNY172SVM directly replace MCT22023S in all applications?

A: Direct replacement is possible only when the application isolation voltage requirement does not exceed 4170Vrms. The MCT22023S provides 5300Vrms isolation; applications requiring this higher rating cannot use CNY172SVM without circuit redesign.

Q: Are the package dimensions identical between MCT22023S and CNY172SVM?

A: Both components use 6-SMD Gull Wing surface mount packages, ensuring mechanical compatibility with existing PCB layouts without modification.

Q: What is the impact of the different operating temperature ranges?

A: The MCT22023S operates from -55°C to 100°C, while CNY172SVM operates from -40°C to 100°C. Applications requiring operation below -40°C cannot use CNY172SVM as a substitute.

Q: How do the current transfer ratios compare?

A: Both components specify identical CTR performance: 63% minimum and 125% maximum at 10mA input current. Signal transfer characteristics remain consistent between the two parts.

Q: What is the significance of the higher maximum output voltage in CNY172SVM?

A: The CNY172SVM supports 70V maximum output voltage compared to 30V for MCT22023S. This provides additional design flexibility for applications with higher output voltage requirements, though both parts maintain identical 50mA per-channel current capacity.

Q: Is RoHS compliance a factor in substitution decisions?

A: The CNY172SVM is RoHS3 compliant. Applications subject to RoHS requirements should prioritize CNY172SVM. The MCT22023S RoHS status is not specified in available documentation.