MCT5201W Equivalent & Substitute Parts

Part Overview

The MCT5201W 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 in a 6-DIP package and is classified as obsolete. Due to its obsolete status and limited availability in new production, identifying compatible substitute parts is essential for ongoing system support and new design implementations.

Substiute Parts

MCT5201W

onsemiIn Stock: 1140MCT5201W Datasheet

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MCT5210M

onsemiIn Stock: 9733MCT5210M Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution compatibility for the MCT5201W is determined by the following critical parameters:

• Isolation Voltage: Minimum 5300Vrms required for equivalent functionality
• Output Configuration: Transistor with base output mandatory
• Number of Channels: Single channel only
• Package Type: 6-DIP through-hole mounting
• Output Specifications: Maximum 30V output voltage, 150mA per channel, 400mV Vce saturation
• Input Type: DC input requirement
• Voltage Forward (Vf): 1.25V typical
• Current DC Forward (If): Maximum 50mA

The MCT5210M is listed as a substitute part. However, this part exhibits a lower isolation voltage rating (4170Vrms versus 5300Vrms), which represents a significant reduction in isolation capability. This parameter difference must be evaluated against specific application requirements before substitution.

Parameter Comparison

Engineering Selection Recommendations

The MCT5210M is the identified substitute for the obsolete MCT5201W. Selection of this substitute requires evaluation of the following factors:

Isolation Voltage Consideration: The MCT5210M operates at 4170Vrms isolation, which is 1130Vrms lower than the MCT5201W specification. Applications requiring the full 5300Vrms isolation rating cannot use this substitute without circuit redesign or additional isolation measures.

Product Status: The MCT5210M maintains active production status with 9670 units in stock, providing supply continuity compared to the obsolete MCT5201W.

Temperature Range: The MCT5210M supports -40°C to 100°C operation, which is narrower than the MCT5201W range of -55°C to 100°C. Applications requiring operation below -40°C cannot use this substitute.

Package Dimensions: The MCT5210M uses a 6-DIP package with 0.300" (7.62mm) pitch, compared to the MCT5201W 0.400" (10.16mm) pitch. PCB layout modifications are required for physical compatibility.

Current Transfer Ratio: The MCT5210M specifies 70% minimum at 3mA versus the MCT5201W at 120% minimum at 5mA, indicating different switching characteristics that may affect circuit performance.

Compliance: Both parts maintain REACH Unaffected status, ensuring regulatory alignment.

Frequently Asked Questions (FAQ)

Q: Can MCT5210M directly replace MCT5201W in existing designs?

A: Direct replacement requires verification that the application isolation voltage requirement does not exceed 4170Vrms. PCB layout modifications are necessary due to different package pitch dimensions (0.300" versus 0.400"). Current transfer ratio differences must be evaluated against circuit switching requirements.

Q: What is the primary limitation of using MCT5210M as a substitute?

A: The MCT5210M isolation voltage rating of 4170Vrms is 1130Vrms lower than the MCT5201W specification of 5300Vrms. Applications designed for the full 5300Vrms isolation capability cannot use this substitute without additional isolation circuit modifications.

Q: Are there temperature range considerations for substitution?

A: Yes. The MCT5210M operates from -40°C to 100°C, while the MCT5201W operates from -55°C to 100°C. Applications requiring operation below -40°C cannot use the MCT5210M substitute.

Q: How do the current transfer ratios differ between these parts?

A: The MCT5201W specifies 120% minimum current transfer ratio at 5mA input current, while the MCT5210M specifies 70% minimum at 3mA input current. These different test conditions and ratios indicate different switching characteristics that must be evaluated for specific circuit applications.

Q: Is the MCT5210M readily available?

A: Yes. The MCT5210M is in active production status with 9670 units currently in stock, providing supply availability compared to the obsolete MCT5201W.

Q: What package considerations apply to substitution?

A: The MCT5210M uses a 6-DIP package with 0.300" (7.62mm) pitch, while the MCT5201W uses 0.400" (10.16mm) pitch. PCB footprint modifications are required for physical compatibility, as the pin spacing differs between the two packages.