MB254W-BP Bridge Rectifier Single Phase 400V 25A Equivalent & Substitute Parts

Part Overview

The MB254W-BP is a single-phase bridge rectifier manufactured by Micro Commercial Co, rated for 400V peak reverse voltage and 25A average rectified current. This component is classified as obsolete, making identification of equivalent and substitute parts essential for ongoing system maintenance and new design implementations. The MB254W-BP operates across a temperature range of -55°C to 125°C and is housed in a 4-Square MB-35W through-hole package format.

Substiute Parts

MB254W-BP

Micro Commercial CoIn Stock: 852MB254W-BP Datasheet

Current PartRFQ

KBPC2504W-G

Comchip TechnologyIn Stock: 1124KBPC2504W-G Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MB254W-BP is determined by strict equivalence across the following critical parameters:

• Voltage - Peak Reverse (Max): 400 V minimum
• Current - Average Rectified (Io): 25 A minimum
• Diode Type: Single Phase
• Technology: Standard
• Mounting Type: Through Hole
• Package compatibility: 4-Square form factor

The KBPC2504W-G from Comchip Technology meets all substitution criteria. Both parts share identical voltage and current ratings, operate as single-phase standard bridge rectifiers, and utilize through-hole mounting in compatible 4-Square packages. The substitute part maintains full electrical and mechanical compatibility for direct replacement applications.

Parameter Comparison

Engineering Selection Recommendations

The KBPC2504W-G is a direct substitute for the obsolete MB254W-BP. Both components are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements. The substitute part is currently in active production status with confirmed inventory availability, eliminating supply chain risk associated with the obsolete main part.

The KBPC2504W-G demonstrates improved forward voltage characteristics (1.1 V versus 1.2 V at 12.5 A), resulting in lower power dissipation. The extended operating temperature range of the substitute (-55°C to 150°C versus -55°C to 125°C) provides additional thermal margin for demanding applications. Both parts maintain identical voltage and current ratings, reverse leakage specifications, and through-hole mounting compatibility.

Frequently Asked Questions (FAQ)

Q: Can the KBPC2504W-G replace the MB254W-BP in existing designs?

A: Yes. Both parts are single-phase bridge rectifiers with identical 400V peak reverse voltage and 25A average rectified current ratings. Through-hole mounting and 4-Square package compatibility enable direct substitution.

Q: What are the key differences between these parts?

A: The KBPC2504W-G has a lower forward voltage drop (1.1 V versus 1.2 V at 12.5 A) and an extended maximum operating temperature range (150°C versus 125°C). The substitute part is in active production, whereas the MB254W-BP is obsolete.

Q: Are there any compliance or certification differences?

A: Both parts are ROHS3 compliant, REACH unaffected, and carry identical moisture sensitivity levels. No compliance barriers exist for substitution.

Q: Does the package form factor differ between these parts?

A: Both parts use 4-Square through-hole packages. The MB-35W and KBPC-W designations refer to manufacturer-specific package identifiers, but the physical form factors are compatible for board-level mounting.

Q: What is the inventory status of these parts?

A: The MB254W-BP has 757 pieces in stock as new original inventory. The KBPC2504W-G has 1083 pieces in stock. The substitute part's active production status ensures ongoing availability.