MCT52103S Equivalent & Substitute Parts

Part Overview

The MCT52103S 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 with transistor output and integrated base connection, suitable for DC input applications. The part is currently classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement continuity.

Substiute Parts

MCT52103S

onsemiIn Stock: 832MCT52103S Datasheet

Current PartRFQ

MCT5210SM

Fairchild SemiconductorIn Stock: 4651MCT5210SM Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MCT52103S is determined by the following critical parameters:

Mandatory Matching Parameters:

• Number of Channels: 1
• Output Type: Transistor with Base
• Mounting Type: Surface Mount
• Package / Case: 6-SMD, Gull Wing
• Input Type: DC
• Voltage - Output (Max): 30V
• Current - Output / Channel: 150mA
• Vce Saturation (Max): 400mV
• Current Transfer Ratio (Min): 70% @ 3mA

Allowable Variation Parameters:

• Voltage - Isolation: Substitute must meet or exceed 4170Vrms minimum
• Operating Temperature: Substitute operating range must encompass the application requirements
• Product Status: Active status preferred for long-term availability

The MCT5210SM qualifies as a direct substitute based on matching all mandatory electrical and mechanical parameters, with the exception of isolation voltage (4170Vrms versus 5300Vrms) and operating temperature range (-40°C ~ 100°C versus -55°C ~ 100°C).

Parameter Comparison

Engineering Selection Recommendations

The MCT5210SM from Fairchild Semiconductor is suitable as a substitute for the obsolete MCT52103S in applications where the following conditions are met:

1. Isolation Voltage Requirement: Applications requiring isolation voltage of 4170Vrms or lower can use the MCT5210SM. Applications requiring the full 5300Vrms isolation rating of the original part cannot use this substitute.

2. Operating Temperature Range: The MCT5210SM operates from -40°C to 100°C. Applications requiring operation below -40°C cannot use this substitute. Applications within the -40°C to 100°C range are compatible.

3. Compliance and Certification: Both parts share identical ECCN (EAR99) and HTSUS (8541.49.8000) classifications, ensuring equivalent regulatory treatment.

4. Product Availability: The MCT5210SM is currently in active production status with substantial inventory availability (4639 pcs), providing long-term procurement security compared to the obsolete MCT52103S.

5. Electrical Performance: All critical electrical parameters including current transfer ratio, switching times, output voltage, output current, and saturation voltage are identical between the two parts, ensuring functional equivalence in compatible applications.

Frequently Asked Questions (FAQ)

Q: Can the MCT5210SM directly replace the MCT52103S in all applications?

A: No. The MCT5210SM can replace the MCT52103S only in applications where the isolation voltage requirement does not exceed 4170Vrms and the operating temperature range falls within -40°C to 100°C. Applications requiring the full 5300Vrms isolation rating or operation below -40°C require alternative solutions.

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

A: The MCT52103S provides 5300Vrms isolation voltage and operates from -55°C to 100°C. The MCT5210SM provides 4170Vrms isolation voltage and operates from -40°C to 100°C. All other electrical and mechanical parameters are identical.

Q: Are the packages identical?

A: Yes. Both parts use 6-SMD, Gull Wing surface mount packages with identical pinouts and mechanical dimensions, allowing direct PCB footprint compatibility.

Q: Why is the MCT52103S obsolete?

A: The MCT52103S is classified as obsolete by onsemi. The MCT5210SM from Fairchild Semiconductor represents an active alternative for compatible applications.

Q: What compliance certifications apply to both parts?

A: Both parts share identical export control classification (ECCN: EAR99) and tariff classification (HTSUS: 8541.49.8000), ensuring equivalent regulatory treatment in procurement and logistics.

Q: Are there any differences in switching performance?

A: No. Both parts have identical turn-on/turn-off times (10µs, 400ns) and identical current transfer ratios (70% @ 3mA), ensuring equivalent switching performance in compatible applications.