MB1505 Bridge Rectifier Single Phase 50V 15A Equivalent & Substitute Parts

Part Overview

The MB1505 is a single-phase bridge rectifier manufactured by Diodes Incorporated, rated for 50V peak reverse voltage and 15A average rectified current. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The MB1505 features QC terminal mounting and operates across a temperature range of -55°C to 150°C, suitable for standard rectification applications requiring moderate current capacity.

Substiute Parts

MB1505

Diodes IncorporatedIn Stock: 2391MB1505 Datasheet

Current PartRFQ

BR50005-G

Comchip TechnologyIn Stock: 984BR50005-G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MB1505 is determined by the following critical parameters:

• Voltage - Peak Reverse (Max): Must equal or exceed 50V
• Current - Average Rectified (Io): Must meet or exceed 15A minimum requirement
• Diode Type: Single Phase bridge rectifier configuration
• Mounting Type: QC Terminal compatibility
• Technology: Standard bridge rectifier technology
• RoHS and regulatory compliance status

The BR50005-G from Comchip Technology qualifies as a manufacturer-recommended substitute. While it exceeds the current rating (50A vs. 15A), it maintains identical voltage specifications, forward voltage characteristics, reverse leakage performance, and QC terminal mounting. The higher current rating provides design margin without compromising electrical compatibility.

Parameter Comparison

Engineering Selection Recommendations

The BR50005-G is the manufacturer-recommended substitute for the obsolete MB1505. Both components maintain ROHS3 compliance and carry identical voltage and leakage specifications. The BR50005-G is currently in active production status with 899 units in stock, compared to the MB1505's obsolete status with limited remaining inventory.

The primary design consideration is the operating temperature maximum: the BR50005-G operates to 125°C versus the MB1505's 150°C. Applications requiring sustained operation above 125°C junction temperature must evaluate thermal management or seek alternative solutions. For standard applications within the -55°C to 125°C range, the BR50005-G provides direct functional equivalence with enhanced current capacity.

Frequently Asked Questions (FAQ)

Q: Can the BR50005-G directly replace the MB1505 in existing designs?

A: Yes, for applications operating within -55°C to 125°C. The BR50005-G maintains identical voltage ratings, forward voltage drop, and reverse leakage characteristics. The higher current rating (50A vs. 15A) does not create compatibility issues. Verify your application's maximum junction temperature requirement before substitution.

Q: What is the significance of the higher current rating on the BR50005-G?

A: The BR50005-G's 50A rating exceeds the MB1505's 15A requirement. This provides additional design margin and thermal headroom. The substitute will not operate at higher current than the original design specifies; the higher rating simply indicates greater capacity available.

Q: Are there packaging differences between MB1505 and BR50005-G?

A: Both use 4-Square QC terminal mounting. The package designations differ (MB vs. BR) but represent the same physical form factor. Verify PCB footprint compatibility with your supplier's mechanical drawings.

Q: Why is the MB1505 listed as obsolete?

A: Manufacturer discontinuation of the MB1505 necessitates transition to active alternatives. The BR50005-G represents the recommended path forward, offering equivalent electrical performance with current production availability.

Q: Does the narrower temperature range of BR50005-G affect most applications?

A: For the majority of industrial and commercial applications, the -55°C to 125°C range is sufficient. Only applications requiring sustained junction temperatures above 125°C require alternative evaluation. Consult thermal analysis for your specific design.