MCT5200S Equivalent & Substitute Parts

Part Overview

The MCT5200S 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 configuration with transistor output and integrated base connection, housed in a 6-SMD surface mount package. The MCT5200S is classified as obsolete, making identification of functionally equivalent substitute parts essential for ongoing system support and new design implementations.

Substiute Parts

MCT5200S

onsemiIn Stock: 1211MCT5200S Datasheet

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MCT5210SM

Fairchild SemiconductorIn Stock: 4651MCT5210SM Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MCT5200S are identified based on the following critical parameters that define functional equivalence:

• Output Configuration: Transistor with base output (required for direct pin-compatible replacement)
• Package Type: 6-SMD, Gull Wing surface mount (required for PCB compatibility)
• Number of Channels: Single channel (1 channel)
• Voltage - Output (Max): 30V maximum rating
• Current - Output / Channel: 150mA per channel capacity
• Vce Saturation (Max): 400mV maximum saturation voltage
• Input Type: DC input
• Voltage - Forward (Vf) (Typ): 1.25V typical forward voltage
• Current - DC Forward (If) (Max): 50mA maximum forward current

The MCT5210SM qualifies as a substitute part based on matching these core electrical and mechanical parameters. While isolation voltage differs (4170Vrms vs. 5300Vrms), the substitute maintains compatibility with the specified output stage requirements and package footprint.

Parameter Comparison

Engineering Selection Recommendations

The MCT5200S is classified as obsolete, necessitating transition to active production alternatives. The MCT5210SM from Fairchild Semiconductor maintains active product status and provides functional compatibility across all critical output stage parameters.

Selection between these parts should account for the following factors:

• Isolation Voltage Requirement: The MCT5200S provides 5300Vrms isolation, while the MCT5210SM provides 4170Vrms. Applications requiring the higher isolation rating of the MCT5200S must evaluate whether the substitute's 4170Vrms rating satisfies system isolation requirements.
• Operating Temperature Range: The MCT5200S operates from -55°C to 100°C, while the MCT5210SM operates from -40°C to 100°C. Applications requiring operation below -40°C must retain the MCT5200S or identify alternative solutions.
• Current Transfer Ratio: Both parts meet minimum current transfer ratio specifications at their respective test conditions, ensuring adequate signal transfer in typical applications.
• Regulatory Compliance: Both parts carry identical ECCN (EAR99) and HTSUS (8541.49.8000) classifications, maintaining compliance consistency.

Frequently Asked Questions (FAQ)

Q: Can the MCT5210SM directly replace the MCT5200S in existing designs?

A: The MCT5210SM provides pin-compatible replacement in the 6-SMD, Gull Wing package with matching output stage specifications (30V maximum output, 150mA per channel, 400mV Vce saturation). However, the reduced isolation voltage (4170Vrms vs. 5300Vrms) and narrower operating temperature range (-40°C to 100°C vs. -55°C to 100°C) must be evaluated against application requirements before implementation.

Q: What are the key differences between these optoisolators?

A: The primary differences are isolation voltage rating, operating temperature range, and manufacturer. The MCT5200S offers higher isolation voltage and extended low-temperature operation. The MCT5210SM is currently in active production, addressing the obsolescence of the MCT5200S. Both maintain identical output electrical characteristics and package configuration.

Q: Are there any package compatibility concerns?

A: Both parts use identical 6-SMD, Gull Wing surface mount packaging. PCB footprints and reflow soldering profiles are compatible. No package-related design modifications are required for substitution.

Q: How do the current transfer ratios compare?

A: The MCT5200S specifies 75% minimum current transfer ratio at 10mA input current, while the MCT5210SM specifies 70% minimum at 3mA input current. Both ratings ensure adequate signal transfer in typical isolation applications. The MCT5200S provides higher transfer efficiency at higher input currents.

Q: What compliance certifications apply to both parts?

A: Both the MCT5200S and MCT5210SM carry identical ECCN (EAR99) and HTSUS (8541.49.8000) classifications, maintaining regulatory consistency for international trade and export compliance purposes.