MCT2SR2VM Equivalent & Substitute Parts

Part Overview

The MCT2SR2VM is an optoisolator transistor with base output manufactured by onsemi, designed for high-voltage isolation applications requiring 7500Vpk isolation rating. This component integrates a single-channel optocoupler with transistor output and base connection in a 6-SMD surface mount package. The part is currently classified as obsolete, making identification of equivalent and substitute components essential for ongoing design support and procurement continuity.

Substiute Parts

MCT2SR2VM

onsemiIn Stock: 5209MCT2SR2VM Datasheet

Current PartRFQ

MCT2ESR2VM

Fairchild SemiconductorIn Stock: 19129MCT2ESR2VM Datasheet

Parametric EquivalentRFQ

MCT2SM

onsemiIn Stock: 5176MCT2SM Datasheet

SimilarRFQ

MCT2SMT&R

Isocom Components 2004 LTDIn Stock: 994MCT2SMT&R Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the MCT2SR2VM is determined by strict equivalence across the following critical parameters:

• Isolation voltage rating (7500Vpk minimum)
• Single-channel configuration
• Transistor with base output topology
• Current transfer ratio minimum of 20% @ 10mA
• Maximum output voltage of 30V
• Maximum output current of 50mA per channel
• 6-SMD surface mount package with gull wing leads
• Operating temperature range compatibility

Substitute parts are classified into two categories:

Parametric Equivalent: MCT2ESR2VM (Fairchild Semiconductor) — maintains all critical electrical and mechanical parameters with identical specifications.

Similar Parts: MCT2SM (onsemi) and MCT2SMT&R (Isocom Components 2004 LTD) — share core functionality and package form factor with noted parameter variations.

Parameter Comparison

Engineering Selection Recommendations

MCT2ESR2VM (Fairchild Semiconductor) is the primary parametric equivalent for direct replacement of MCT2SR2VM. This part maintains identical electrical specifications and package configuration while offering active product status, ensuring long-term availability and supply chain stability.

MCT2SM (onsemi) provides functional equivalence with identical electrical parameters but shares obsolete product status with the original part, limiting its utility for new procurement strategies.

MCT2SMT&R (Isocom Components 2004 LTD) offers active product status and extended operating temperature range (-55°C ~ 100°C). However, this part specifies isolation voltage as 7.5Vpk rather than 7500Vpk and does not provide maximum output current specification, introducing potential incompatibility in high-voltage isolation applications. This part is suitable only for applications where the lower isolation voltage rating is acceptable.

For applications requiring the full 7500Vpk isolation specification with active product status, MCT2ESR2VM is the recommended selection.

Frequently Asked Questions (FAQ)

Q: Can MCT2SMT&R be used as a direct replacement for MCT2SR2VM?

A: MCT2SMT&R is not a direct replacement. While it shares the same package form factor and base output topology, the isolation voltage specification differs significantly (7.5Vpk versus 7500Vpk). Use MCT2SMT&R only in applications where the lower isolation voltage is acceptable.

Q: What is the primary advantage of MCT2ESR2VM over MCT2SR2VM?

A: MCT2ESR2VM maintains identical electrical and mechanical specifications while offering active product status. This ensures continued availability, supply chain support, and manufacturing consistency.

Q: Are all substitute parts compatible with existing PCB layouts designed for MCT2SR2VM?

A: Yes. All listed substitute parts use the same 6-SMD, gull wing package configuration, ensuring mechanical and electrical compatibility with existing surface mount designs.

Q: Why does MCT2SMT&R specify different turn-on and turn-off times?

A: MCT2SMT&R specifies 3µs turn-on and turn-off times compared to 2µs for the original part. This represents a slower switching response and may impact circuit performance in time-critical applications.

Q: What compliance certifications apply to these parts?

A: MCT2SR2VM, MCT2ESR2VM, and MCT2SM carry REACH Unaffected status and EAR99 export classification. MCT2SMT&R is RoHS3 compliant with REACH Unaffected status.