MCT5210S Equivalent & Substitute Parts

Part Overview

The MCT5210S 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 base connection, suitable for DC input applications. The MCT5210S is classified as obsolete, making identification of compatible substitute parts essential for ongoing design support and procurement continuity.

Substiute Parts

MCT5210S

onsemiIn Stock: 2103MCT5210S Datasheet

Current PartRFQ

MCT5210SM

Fairchild SemiconductorIn Stock: 4651MCT5210SM Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MCT5210S is determined by the following critical parameters:

• Number of Channels: Must be 1 channel
• Output Type: Must be Transistor with Base
• Voltage - Isolation: Minimum 4170Vrms (allows lower isolation ratings within acceptable range)
• Current Transfer Ratio (Min): Must be 70% @ 3mA or equivalent
• Voltage - Output (Max): Must be 30V or higher
• Current - Output / Channel: Must be 150mA or higher
• Vce Saturation (Max): Must be 400mV or lower
• Operating Temperature Range: Must encompass or match the required operating window
• Package / Case: Must be 6-SMD, Gull Wing
• Input Type: Must be DC

The MCT5210SM meets these substitution criteria and is identified as a compatible alternative.

Parameter Comparison

Engineering Selection Recommendations

The MCT5210SM from Fairchild Semiconductor is a direct functional substitute for the obsolete MCT5210S. Both components share identical electrical characteristics for current transfer ratio, switching times, output voltage and current ratings, and saturation voltage. The primary difference is the isolation voltage rating: the MCT5210SM provides 4170Vrms compared to the MCT5210S at 5300Vrms. Selection between these parts depends on the specific isolation voltage requirement of the application.

The MCT5210SM carries Active product status, ensuring continued availability and manufacturing support. Both parts comply with identical export control classifications (EAR99) and tariff codes (8541.49.8000), and both utilize the same 6-SMD Gull Wing package for direct PCB compatibility.

The operating temperature range of the MCT5210SM (-40°C ~ 100°C) is narrower than the MCT5210S (-55°C ~ 100°C). Applications requiring operation below -40°C must retain the MCT5210S specification or identify alternative solutions.

Frequently Asked Questions (FAQ)

Q: Can the MCT5210SM directly replace the MCT5210S in existing designs?

A: The MCT5210SM is electrically compatible with the MCT5210S for all switching characteristics, output ratings, and package configuration. The primary consideration is isolation voltage: if your application requires 5300Vrms isolation, the MCT5210SM's 4170Vrms rating may not be suitable. Verify your circuit's isolation voltage requirement before substitution.

Q: What is the difference in isolation voltage between these parts?

A: The MCT5210S provides 5300Vrms isolation, while the MCT5210SM provides 4170Vrms isolation. Both ratings are measured under the same test conditions. Selection depends on your application's isolation voltage specification.

Q: Are the packages identical?

A: Yes. Both the MCT5210S and MCT5210SM use the 6-SMD Gull Wing package, enabling direct PCB footprint compatibility without layout modifications.

Q: What is the temperature range difference?

A: The MCT5210S operates from -55°C to 100°C, while the MCT5210SM operates from -40°C to 100°C. If your application requires operation below -40°C, the MCT5210S specification must be maintained.

Q: Are there compliance or export restrictions on these parts?

A: Both parts are classified under ECCN EAR99 and HTSUS code 8541.49.8000, indicating identical export control and tariff treatment.

Q: Why is the MCT5210S listed as obsolete?

A: The MCT5210S is no longer in active production. The MCT5210SM from Fairchild Semiconductor is the recommended active alternative for new designs and ongoing procurement.