MCT5210 Equivalent & Substitute Parts

Part Overview

The MCT5210 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 currently classified as obsolete. Due to its obsolete status, identifying equivalent and substitute parts is essential for design continuity and procurement planning. Substitute parts must maintain compatibility across isolation voltage, output characteristics, and package form factor while accounting for variations in electrical performance parameters.

Substiute Parts

MCT5210

onsemiIn Stock: 23381MCT5210 Datasheet

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MCT5210M

onsemiIn Stock: 9733MCT5210M Datasheet

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4N35-000E

Broadcom LimitedIn Stock: 39614N35-000E Datasheet

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MCT5210

Fairchild SemiconductorIn Stock: 23449MCT5210 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MCT5210 is determined by the following critical parameters:

• Package Compatibility: All substitute parts must use 6-DIP (0.300", 7.62mm) through-hole packaging to ensure direct PCB compatibility without layout modifications.
• Output Configuration: Transistor with base output is mandatory to maintain circuit functionality and control characteristics.
• Isolation Voltage: Minimum isolation voltage must meet or exceed application requirements. The MCT5210 specifies 5300Vrms; substitutes with lower isolation ratings may be acceptable depending on circuit design margins.
• Output Voltage and Current Ratings: Maximum output voltage of 30V and channel current of 150mA establish the upper performance envelope.
• Current Transfer Ratio: Minimum CTR of 70% @ 3mA defines input-to-output signal transfer efficiency.
• Temperature Range: Operating temperature range of -55°C ~ 100°C establishes environmental compatibility.

Three substitute parts meet these criteria with varying isolation voltage ratings and product status classifications.

Parameter Comparison

Engineering Selection Recommendations

MCT5210M (onsemi) is the primary recommended substitute. It maintains identical package, output configuration, and current transfer ratio specifications. The isolation voltage is reduced to 4170Vrms, which is acceptable for applications where the original 5300Vrms rating provides design margin. This part is currently in active production status with ROHS3 compliance and represents the direct evolutionary replacement within the onsemi product line.

4N35-000E (Broadcom Limited) is a secondary substitute suitable for applications with lower isolation voltage requirements (3550Vrms). This part offers superior current transfer ratio (100% @ 10mA) and lower Vce saturation (300mV), providing improved switching performance. However, the maximum output current is limited to 100mA compared to the MCT5210's 150mA rating. This part is active and ROHS3 compliant.

MCT5210 (Fairchild Semiconductor) shares identical electrical specifications with the onsemi MCT5210 but is also classified as obsolete. This part should be considered only when isolation voltage requirements strictly demand 5300Vrms and MCT5210M inventory is unavailable. Fairchild Semiconductor was acquired by ON Semiconductor, and this part number represents legacy documentation.

Frequently Asked Questions (FAQ)

Q: Can MCT5210M be used as a direct replacement for MCT5210?

A: MCT5210M is compatible for most applications. The primary difference is reduced isolation voltage (4170Vrms vs. 5300Vrms). If your circuit design includes isolation voltage margin or operates below 4170Vrms, MCT5210M is a suitable substitute. Verify your application's isolation voltage requirement before selection.

Q: What is the difference between the onsemi MCT5210 and Fairchild MCT5210?

A: Both parts share identical electrical specifications (5300Vrms isolation, 70% CTR @ 3mA, 400mV Vce saturation). Both are obsolete. The primary distinction is manufacturer source. Fairchild Semiconductor is now part of ON Semiconductor. For new designs, MCT5210M is the recommended active alternative.

Q: Is 4N35-000E suitable if my application requires 5300Vrms isolation?

A: No. The 4N35-000E provides only 3550Vrms isolation, which is insufficient for applications requiring 5300Vrms isolation voltage. Use this part only when your isolation voltage requirement is 3550Vrms or lower.

Q: Are all substitute parts available in the same package?

A: Yes. All listed substitute parts use 6-DIP (0.300", 7.62mm) through-hole packaging, ensuring direct PCB compatibility without layout modifications.

Q: What is the temperature range difference between MCT5210 and MCT5210M?

A: MCT5210 operates from -55°C to 100°C, while MCT5210M operates from -40°C to 100°C. If your application requires operation below -40°C, the original MCT5210 or 4N35-000E must be used.

Q: Does MCT5210M have RoHS compliance?

A: Yes. MCT5210M is ROHS3 compliant, meeting current environmental and hazardous substance restrictions. The original MCT5210 RoHS status is not specified in available documentation.