MSTC110-16 Equivalent & Substitute Parts

Part Overview

The MSTC110-16 is a power module thyristor manufactured by Microsemi Corporation, designed as a 1.6 kV SCR module with series connection configuration. This component is classified as obsolete, indicating that direct procurement from the original manufacturer is no longer available. The module features a screw mount design and accommodates two SCRs in series connection, making it suitable for high-voltage switching applications requiring 110 A on-state current capability.

Due to its obsolete status, identifying equivalent substitute parts with compatible electrical and mechanical specifications is necessary for system maintenance, repair, and redesign applications. Substitute parts must maintain compatibility across critical parameters including voltage rating, current capacity, gate trigger characteristics, and thermal operating range.

Substiute Parts

MSTC110-16

Microsemi CorporationIn Stock: 1200MSTC110-16 Datasheet

Current PartRFQ

MCC72-16IO1B

IXYSIn Stock: 100488MCC72-16IO1B Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MSTC110-16 is determined by strict equivalence across the following critical parameters:

Voltage Rating Compatibility: The substitute part must maintain the 1.6 kV off-state voltage specification to ensure proper operation within the same circuit topology and voltage stress conditions.

Current Capacity: The on-state current rating must meet or exceed the 110 A average requirement. Substitute parts with higher current ratings (115 A or greater) provide direct compatibility without derating.

Gate Trigger Characteristics: Gate trigger voltage (Vgt) and gate trigger current (Igt) must be within acceptable ranges for existing gate drive circuitry. The substitute part's 2.5 V Vgt specification is compatible with the original 3 V maximum specification.

Thermal Operating Range: The substitute part must support the operating temperature envelope. The MSTC110-16 operates from -40°C to 130°C; substitute parts with -40°C to 125°C range are compatible for most applications within this overlap.

SCR Configuration: Both parts feature two SCRs in series connection, maintaining identical circuit topology and functional behavior.

Moisture Sensitivity: Both parts carry MSL 1 (Unlimited) classification, ensuring equivalent handling and storage requirements.

Parameter Comparison

Engineering Selection Recommendations

The MCC72-16IO1B manufactured by IXYS is a direct substitute for the obsolete MSTC110-16. This recommendation is based on the following engineering criteria:

Electrical Equivalence: The MCC72-16IO1B meets all critical electrical specifications with compatible or superior ratings. The 115 A on-state current exceeds the 110 A requirement, and the 2.5 V gate trigger voltage is lower than the original 3 V specification, indicating improved gate drive efficiency.

Product Status: The MCC72-16IO1B carries an Active product status, ensuring continued availability and supply chain reliability. This addresses the primary limitation of the obsolete MSTC110-16.

Compliance and Certifications: The MCC72-16IO1B is RoHS3 Compliant and REACH Unaffected, meeting current regulatory requirements for electronic components. Both parts share identical ECCN (EAR99) and HTSUS (8541.30.0080) classifications.

Thermal Compatibility: The operating temperature range of -40°C to 125°C overlaps with the original -40°C to 130°C specification across the full operational envelope for most industrial applications.

Structural Compatibility: Both modules feature identical SCR configuration (2 SCRs in series connection) and equivalent moisture sensitivity levels, ensuring compatibility with existing handling and assembly procedures.

Frequently Asked Questions (FAQ)

Q: Can the MCC72-16IO1B directly replace the MSTC110-16 in existing applications?

A: Yes. The MCC72-16IO1B is electrically and functionally equivalent to the MSTC110-16 across all critical parameters. The higher on-state current rating (115 A vs. 110 A) and lower gate trigger voltage (2.5 V vs. 3 V) provide improved performance margins. Mechanical mounting differences require evaluation based on specific application requirements.

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

A: The primary difference is product status and availability. The MSTC110-16 is obsolete and no longer manufactured by Microsemi, while the MCC72-16IO1B is an active product from IXYS with full supply chain availability. Electrically, the MCC72-16IO1B offers slightly superior specifications.

Q: Are there mounting compatibility considerations?

A: Yes. The MSTC110-16 uses screw mount configuration, while the MCC72-16IO1B uses chassis mount with TO-240AA package. Physical mounting interfaces differ and require mechanical redesign or adapter solutions for direct installation in existing hardware.

Q: Do both parts have the same gate trigger requirements?

A: The gate trigger current (Igt) is identical at 150 mA maximum. The gate trigger voltage differs slightly: MSTC110-16 specifies 3 V maximum, while MCC72-16IO1B specifies 2.5 V maximum. Existing gate drive circuits designed for the original part will function with the substitute, as the lower trigger voltage represents a less stringent requirement.

Q: What is the temperature operating range overlap?

A: Both parts operate from -40°C to 125°C. The MSTC110-16 extends to 130°C, providing a 5°C additional margin at the upper limit. For applications operating within -40°C to 125°C, both parts are fully compatible.

Q: Are there any compliance or regulatory differences?

A: No. Both parts carry identical ECCN (EAR99) and HTSUS (8541.30.0080) classifications. The MCC72-16IO1B includes RoHS3 Compliance and REACH Unaffected status, meeting current regulatory requirements.

Q: What is the current surge rating difference?

A: The MSTC110-16 specifies 2250 A non-repetitive surge current at 50 Hz. The MCC72-16IO1B specifies 1700 A and 1800 A for 50 Hz and 60 Hz respectively. Applications requiring surge current handling above 1800 A require detailed circuit analysis to confirm compatibility.