MB2505 Bridge Rectifier Equivalent & Substitute Parts

Part Overview

The MB2505 is a single-phase bridge rectifier manufactured by Diodes Incorporated, rated for 50 V peak reverse voltage and 25 A average rectified current. This component is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and procurement continuity. The MB2505 features QC terminal mounting and operates across a temperature range of -55°C to 150°C.

Substiute Parts

MB2505

Diodes IncorporatedIn Stock: 945MB2505 Datasheet

Current PartRFQ

BR50005-G

Comchip TechnologyIn Stock: 984BR50005-G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MB2505 is determined by the following critical parameters:

• Voltage Rating: Peak reverse voltage must be equal to or greater than 50 V
• Current Rating: Average rectified current must meet or exceed 25 A
• Forward Voltage: Forward voltage drop characteristics must be compatible with circuit design
• Reverse Leakage: Leakage current specifications must not exceed application requirements
• Mounting Type: QC terminal mounting must be maintained for mechanical compatibility
• Package Configuration: 4-Square package footprint must be preserved
• Compliance: RoHS3 compliance is required for regulatory alignment

The BR50005-G from Comchip Technology meets these substitution criteria with equivalent or superior electrical characteristics and maintains mechanical compatibility through identical mounting and package specifications.

Parameter Comparison

Engineering Selection Recommendations

The BR50005-G from Comchip Technology is the manufacturer-recommended substitute for the obsolete MB2505. Selection of BR50005-G is appropriate when:

• Peak reverse voltage requirement is 50 V or lower
• Average rectified current requirement is 25 A or lower
• Operating temperature does not exceed 125°C (TJ)
• QC terminal mounting and 4-Square package footprint are required
• RoHS3 compliance is mandated

The BR50005-G provides higher current capacity (50 A vs. 25 A), which offers design margin in applications where the MB2505 was previously specified. The reduced maximum operating temperature of the BR50005-G (125°C vs. 150°C) must be evaluated against actual circuit thermal requirements.

Frequently Asked Questions (FAQ)

Q: Can BR50005-G directly replace MB2505 in existing designs?

A: BR50005-G is mechanically and electrically compatible with MB2505 for applications operating at or below 125°C junction temperature. The higher current rating of BR50005-G (50 A) does not create compatibility issues in circuits designed for 25 A operation.

Q: What is the primary difference between MB2505 and BR50005-G?

A: The BR50005-G has double the average rectified current capacity (50 A vs. 25 A) and a reduced maximum operating temperature (125°C vs. 150°C). Both components share identical voltage ratings, forward voltage characteristics, and mounting specifications.

Q: Are there thermal considerations when substituting MB2505 with BR50005-G?

A: Applications requiring sustained operation above 125°C junction temperature cannot use BR50005-G as a substitute. Circuit thermal analysis must confirm that operating conditions remain within the BR50005-G temperature specification.

Q: Is the 4-Square package footprint identical between MB and BR variants?

A: Both MB2505 and BR50005-G use 4-Square package configurations with QC terminal mounting. Mechanical compatibility is maintained for PCB layout and thermal management purposes.

Q: What compliance certifications apply to both parts?

A: Both MB2505 and BR50005-G are ROHS3 compliant. The BR50005-G is REACH unaffected, while the MB2505 is REACH affected. Regulatory requirements for the end application determine which compliance status is applicable.