MCT5211W Equivalent & Substitute Parts

Part Overview

The MCT5211W 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 with transistor output and integrated base connection. The MCT5211W is classified as obsolete, making identification of compatible substitute parts essential for ongoing system support and new design implementations where this isolation voltage and output configuration are required.

Substiute Parts

MCT5211W

onsemiIn Stock: 1054MCT5211W Datasheet

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MCT5210M

onsemiIn Stock: 9733MCT5210M Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the MCT5211W is constrained by the following critical parameters that define functional equivalence:

Primary Substitution Criteria:

• Output configuration: Transistor with base (fixed requirement)
• Number of channels: Single channel (fixed requirement)
• Package type: 6-DIP through-hole mounting (fixed requirement)
• Isolation voltage rating: Minimum 4170Vrms (allows lower-rated alternatives for reduced isolation requirements)
• Output voltage capability: 30V maximum (fixed requirement)
• Output current: 150mA per channel (fixed requirement)
• Vce saturation: 400mV maximum (fixed requirement)

The MCT5210M qualifies as a substitute based on matching output configuration, channel count, package type, output voltage, output current, and saturation characteristics. The MCT5210M provides reduced isolation voltage (4170Vrms versus 5300Vrms), which represents a trade-off acceptable only in applications where the lower isolation rating is sufficient.

Parameter Comparison

Engineering Selection Recommendations

MCT5210M Substitution Applicability:

The MCT5210M is suitable as a substitute for the MCT5211W in applications where isolation voltage requirements do not exceed 4170Vrms. Both components share identical output voltage, output current, and saturation voltage specifications, ensuring compatible drive characteristics in the output stage.

Considerations for Substitution:

1. Isolation Voltage Derating: Applications requiring the full 5300Vrms isolation rating of the MCT5211W cannot use the MCT5210M without redesign or isolation circuit modification.

2. Operating Temperature Range: The MCT5210M operates from -40°C to 100°C, compared to the MCT5211W range of -55°C to 100°C. Applications requiring operation below -40°C require the MCT5211W or alternative components.

3. Package Dimensions: The MCT5210M uses a 6-DIP package with 0.300" (7.62mm) body width, while the MCT5211W uses 0.400" (10.16mm) width. PCB layout and socket compatibility must be verified before substitution.

4. Compliance Status: The MCT5210M is ROHS3 compliant and actively manufactured, providing supply chain continuity compared to the obsolete MCT5211W.

Frequently Asked Questions (FAQ)

Q: Can the MCT5210M directly replace the MCT5211W in existing designs?

A: Direct replacement is possible only if the application isolation voltage requirement does not exceed 4170Vrms and the operating temperature range does not go below -40°C. PCB layout must accommodate the different DIP body dimensions (0.300" versus 0.400" width).

Q: What is the primary difference between these two parts?

A: The MCT5211W provides 5300Vrms isolation voltage, while the MCT5210M provides 4170Vrms isolation voltage. Both share identical output stage specifications (30V maximum, 150mA per channel, 400mV saturation).

Q: Are there any compliance differences?

A: The MCT5210M is ROHS3 compliant and actively manufactured. The MCT5211W is obsolete with unspecified RoHS status. Both maintain REACH Unaffected status.

Q: How do the package dimensions affect substitution?

A: The MCT5210M 6-DIP package measures 0.300" (7.62mm) body width, while the MCT5211W measures 0.400" (10.16mm). Existing PCB layouts designed for the MCT5211W may require modification or use of adapter sockets for the MCT5210M.

Q: What are the current transfer ratio differences?

A: The MCT5211W specifies 150% minimum CTR at 1.6mA input current, while the MCT5210M specifies 70% minimum CTR at 3mA input current. These represent different input-output transfer characteristics and must be evaluated against circuit design requirements.