MSTC60-08 Equivalent & Substitute Parts

Part Overview

The MSTC60-08 is an SCR module thyristor manufactured by Microsemi Corporation, rated for 800 V off-state voltage with a 60 A on-state current capacity. This component features series connection of all SCRs in a chassis mount module configuration with two SCRs and is designed for high-voltage switching applications requiring reliable gate triggering and surge current handling.

The MSTC60-08 is classified as obsolete. Equivalent and substitute parts are necessary to maintain system functionality and ensure continued availability for applications currently utilizing this component.

Substiute Parts

MSTC60-08

Microsemi CorporationIn Stock: 776MSTC60-08 Datasheet

Current PartRFQ

MCC56-08IO1B

IXYSIn Stock: 918MCC56-08IO1B Datasheet

SimilarRFQ

MCC95-08IO1B

IXYSIn Stock: 1029MCC95-08IO1B Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MSTC60-08 are identified based on strict electrical and mechanical compatibility criteria. The following parameters define acceptable substitution:

Critical Matching Parameters:

• Voltage - Off State: 800 V (exact match required)
• Structure: Series Connection - All SCRs (exact match required)
• Number of SCRs: 2 (exact match required)
• Mounting Type: Chassis Mount (exact match required)
• Operating Temperature Range: -40°C ~ 125°C (exact match required)

Allowable Variation Parameters:

• Current - On State (It (AV)) (Max): Substitute must equal or exceed 60 A
• Voltage - Gate Trigger (Vgt) (Max): Substitute must equal or be less than 3 V
• Current - Gate Trigger (Igt) (Max): Substitute must equal or be less than 150 mA
• Current - Non Rep. Surge 50, 60Hz (Itsm): Substitute must equal or exceed 1500 A
• Current - Hold (Ih) (Max): Substitute must equal or be less than 250 mA

The substitute parts identified meet all critical matching parameters and satisfy allowable variation criteria, ensuring functional compatibility with applications designed for the MSTC60-08.

Parameter Comparison

Engineering Selection Recommendations

Both MCC56-08IO1B and MCC95-08IO1B are active product alternatives to the obsolete MSTC60-08. Selection between these substitutes depends on application current requirements and regulatory compliance needs.

MCC56-08IO1B Selection Criteria:

• On-state current capacity of 64 A accommodates applications requiring up to 60 A continuous operation
• Gate trigger voltage of 1.5 V provides improved gate sensitivity compared to the original specification
• ROHS3 compliant and REACH unaffected, meeting current environmental regulations
• Suitable for applications with standard current demands

MCC95-08IO1B Selection Criteria:

• On-state current capacity of 116 A provides enhanced current handling for applications exceeding 60 A requirements
• Gate trigger voltage of 2.5 V remains within acceptable operating parameters
• Non-repetitive surge current rating of 2250 A and 2400 A exceeds original specifications
• ROHS3 compliant and REACH unaffected, meeting current environmental regulations
• Suitable for applications requiring higher current capacity or surge protection margins

Both substitutes maintain identical off-state voltage, SCR configuration, operating temperature range, and chassis mount configuration. Package differences (TO-240AA versus original Module) require mechanical integration verification.

Frequently Asked Questions (FAQ)

Q: Can MCC56-08IO1B or MCC95-08IO1B directly replace MSTC60-08 in existing applications?

A: Both parts satisfy the critical electrical parameters (800 V off-state voltage, 2 SCRs in series connection, -40°C to 125°C operating range, chassis mount configuration). However, the package change from Module to TO-240AA requires mechanical integration verification. Mounting hardware and thermal management interfaces must be evaluated for compatibility.

Q: What is the difference between MCC56-08IO1B and MCC95-08IO1B?

A: The primary difference is current capacity. MCC56-08IO1B provides 64 A on-state current, while MCC95-08IO1B provides 116 A. MCC95-08IO1B also offers higher non-repetitive surge current ratings (2250 A and 2400 A versus 1500 A and 1600 A). Both maintain the same 800 V off-state voltage and operating temperature range. Selection depends on application current requirements.

Q: Are the substitute parts compliant with environmental regulations?

A: Yes. Both MCC56-08IO1B and MCC95-08IO1B are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for electronic components.

Q: How do gate trigger specifications compare between the original and substitute parts?

A: The MSTC60-08 specifies a maximum gate trigger voltage of 3 V. MCC56-08IO1B reduces this to 1.5 V, providing improved gate sensitivity. MCC95-08IO1B specifies 2.5 V. Both substitutes maintain the 150 mA maximum gate trigger current or lower, ensuring compatibility with existing gate drive circuits.

Q: What packaging considerations apply to these substitutes?

A: The original MSTC60-08 uses a Module package, while both substitutes use TO-240AA packaging. This change affects mounting configuration, thermal interface design, and mechanical integration. Verify that existing mounting hardware, heat sink interfaces, and PCB layouts accommodate TO-240AA dimensions and pin configuration.

Q: Are there inventory considerations for these substitutes?

A: MCC56-08IO1B has 820 pieces in stock, and MCC95-08IO1B has 984 pieces in stock. Both are classified as active products with ongoing availability, unlike the obsolete MSTC60-08.