VTO70-12IO7 Equivalent & Substitute Parts

Part Overview

The VTO70-12IO7 is a 1.2 kV three-phase bridge SCR module manufactured by IXYS, designed for high-voltage rectification and power control applications. This component features six SCRs in a bridge configuration with a maximum on-state current of 70 A and is mounted in the FO-T-A package for chassis installation.

The VTO70-12IO7 is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain system functionality and ensure continued availability for applications currently utilizing this module.

Substiute Parts

VTO70-12IO7

IXYSIn Stock: 882VTO70-12IO7 Datasheet

Current PartRFQ

MCC26-12IO1B

IXYSIn Stock: 1991MCC26-12IO1B Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the VTO70-12IO7 is evaluated based on the following critical parameters:

• Voltage rating (Off State): 1.2 kV minimum
• Gate trigger voltage and current: 1.5 V (Max) and 100 mA (Max)
• Operating temperature range: -40°C to 125°C (TJ)
• Mounting configuration: Chassis Mount
• Manufacturer compliance: IXYS thyristor modules

The MCC26-12IO1B qualifies as a substitute based on matching voltage rating, gate trigger specifications, operating temperature range, and chassis mount configuration. However, structural differences exist: the MCC26-12IO1B uses a series connection configuration with 2 SCRs, compared to the VTO70-12IO7's bridge configuration with 6 SCRs. The on-state current rating differs (32 A average / 50 A RMS for MCC26-12IO1B versus 70 A for VTO70-12IO7).

Parameter Comparison

Engineering Selection Recommendations

The MCC26-12IO1B is an active product with ROHS3 compliance, providing regulatory advantage over the obsolete VTO70-12IO7. Both components share identical voltage ratings, gate trigger specifications, and operating temperature ranges, establishing electrical compatibility at the gate control level.

Selection of MCC26-12IO1B requires circuit-level evaluation due to structural and current rating differences. The series connection topology and reduced on-state current capacity (32 A average versus 70 A) necessitate application-specific assessment. The different package format (TO-240AA versus FO-T-A) requires mechanical integration review.

Frequently Asked Questions (FAQ)

Q: Can MCC26-12IO1B directly replace VTO70-12IO7 in existing applications?

A: Direct replacement requires verification of circuit topology compatibility and current requirements. The MCC26-12IO1B uses series connection configuration versus the VTO70-12IO7's bridge configuration, and has lower on-state current ratings (32 A average / 50 A RMS versus 70 A). Mechanical mounting differences (TO-240AA versus FO-T-A package) must also be addressed.

Q: What are the key electrical parameters that must match for substitution?

A: Voltage rating (1.2 kV), gate trigger voltage (1.5 V maximum), gate trigger current (100 mA maximum), and operating temperature range (-40°C to 125°C) are the primary matching criteria. Both components meet these specifications.

Q: Does the MCC26-12IO1B offer compliance advantages?

A: Yes. The MCC26-12IO1B is an active product with ROHS3 compliance, whereas the VTO70-12IO7 is obsolete. This provides regulatory and supply chain advantages for new designs or system updates.

Q: Are there package compatibility considerations?

A: Yes. The VTO70-12IO7 uses FO-T-A packaging while the MCC26-12IO1B uses TO-240AA packaging. Mechanical mounting, thermal management, and PCB layout must be re-evaluated for the substitute component.

Q: What is the current capacity difference between these parts?

A: The VTO70-12IO7 supports 70 A on-state current, while the MCC26-12IO1B supports 32 A average or 50 A RMS on-state current. Applications requiring the full 70 A capacity cannot use the MCC26-12IO1B without circuit redesign.