VBO25-12AO2 Equivalent & Substitute Parts

Part Overview

The VBO25-12AO2 is a single-phase bridge rectifier diode manufactured by IXYS, designed for high-voltage applications requiring avalanche technology. This component features a peak reverse voltage rating of 1.2 kV and an average rectified current capacity of 38 A, with QC terminal mounting in a 4-Square FO-A package. The part is classified as obsolete, making identification of suitable substitute components essential for ongoing system maintenance and new design implementations where equivalent performance parameters are required.

Substiute Parts

VBO25-12AO2

IXYSIn Stock: 900VBO25-12AO2 Datasheet

Current PartRFQ

VBO25-16AO2

IXYSIn Stock: 5280VBO25-16AO2 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the VBO25-12AO2 is determined by the following critical parameters:

Mandatory Compatibility Criteria:

• Diode Type: Single Phase
• Technology: Avalanche
• Mounting Type: QC Terminal
• Package / Case: 4-Square, FO-A
• Operating Temperature Range: -40°C ~ 150°C (TJ)

Allowable Parameter Variations:

• Voltage - Peak Reverse (Max): May be equal to or greater than 1.2 kV
• Current - Average Rectified (Io): Must equal 38 A
• Voltage - Forward (Vf) (Max) @ If: Must remain at 1.36 V @ 55 A
• Current - Reverse Leakage @ Vr: Must not exceed 300 µA at the respective voltage rating

The VBO25-16AO2 qualifies as a direct substitute based on these criteria, with the primary difference being an elevated peak reverse voltage rating of 1.6 kV, which provides enhanced voltage margin while maintaining all other electrical and mechanical specifications.

Parameter Comparison

Engineering Selection Recommendations

The VBO25-16AO2 is the qualified substitute for the obsolete VBO25-12AO2. Both components maintain identical electrical performance characteristics for forward voltage drop, average rectified current, and operating temperature range. The VBO25-16AO2 provides a higher peak reverse voltage rating of 1.6 kV compared to the 1.2 kV specification of the original part, which represents an enhanced voltage margin without compromising any other performance parameters.

Both parts are ROHS3 compliant and REACH unaffected, ensuring regulatory alignment. The VBO25-16AO2 maintains active product status with confirmed inventory availability, making it the appropriate selection for applications currently using or requiring the VBO25-12AO2 specification.

Frequently Asked Questions (FAQ)

Q: Can the VBO25-16AO2 directly replace the VBO25-12AO2 in existing designs?

A: Yes. The VBO25-16AO2 maintains identical mounting type (QC Terminal), package configuration (4-Square, FO-A), forward voltage characteristics (1.36 V @ 55 A), average rectified current (38 A), and operating temperature range (-40°C ~ 150°C). The higher peak reverse voltage rating of 1.6 kV provides additional voltage margin without affecting circuit operation.

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

A: The VBO25-16AO2 features a peak reverse voltage rating of 1.6 kV, compared to 1.2 kV for the VBO25-12AO2. All other electrical and mechanical specifications remain identical.

Q: Are there any package or mounting differences?

A: No. Both parts use the same 4-Square FO-A package with QC terminal mounting, ensuring mechanical and electrical compatibility without PCB modifications.

Q: Why is the VBO25-12AO2 classified as obsolete?

A: The VBO25-12AO2 has reached end-of-life status. The VBO25-16AO2 serves as the active replacement, offering equivalent performance with enhanced voltage specifications.

Q: Are both parts RoHS compliant?

A: Yes. Both the VBO25-12AO2 and VBO25-16AO2 are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.