MB154W-BP Bridge Rectifier Single Phase 400V 15A Equivalent & Substitute Parts

Part Overview

The MB154W-BP is a single-phase bridge rectifier manufactured by Micro Commercial Co, rated for 400V peak reverse voltage and 15A average rectified current. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement continuity. Bridge rectifiers in this voltage and current class are fundamental power conversion components used in AC-to-DC conversion applications across industrial and commercial equipment.

Substiute Parts

MB154W-BP

Micro Commercial CoIn Stock: 1174MB154W-BP Datasheet

Current PartRFQ

KBPC1504W-G

Comchip TechnologyIn Stock: 1172KBPC1504W-G Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MB154W-BP is determined by strict equivalence across the following critical parameters:

• Diode Type: Single Phase (identical topology required)
• Voltage - Peak Reverse (Max): 400 V (minimum threshold for voltage rating)
• Current - Average Rectified (Io): 15 A (exact current handling capacity)
• Technology: Standard (rectifier classification)
• Mounting Type: Through Hole (physical installation compatibility)
• Package / Case: 4-Square form factor (mechanical fit)

The KBPC1504W-G meets all substitution criteria within these defined parameters. Substitute parts must maintain identical or superior electrical performance within the specified operating conditions.

Parameter Comparison

Engineering Selection Recommendations

The KBPC1504W-G is a direct functional equivalent to the obsolete MB154W-BP. Selection of this substitute is supported by:

• Identical electrical ratings across voltage, current, and leakage specifications
• Active product status ensuring ongoing availability and supply chain continuity
• Equivalent RoHS3 compliance and REACH unaffected status, maintaining regulatory alignment
• Extended operating temperature range (-55°C to 150°C versus -55°C to 125°C), providing additional thermal margin
• Marginally improved forward voltage characteristic (1.1 V versus 1.2 V at 7.5 A), resulting in reduced power dissipation
• Identical through-hole mounting and 4-square package form factor, enabling direct mechanical substitution

No design modifications are required for component replacement. The KBPC1504W-G operates within all electrical and thermal constraints of the original MB154W-BP specification.

Frequently Asked Questions (FAQ)

Q: Can the KBPC1504W-G be used as a direct replacement for the MB154W-BP?

A: Yes. Both components share identical voltage ratings (400V peak reverse), current ratings (15A average rectified), leakage characteristics (10 µA @ 400V), and through-hole 4-square package form factor. No circuit modifications are required.

Q: What are the key differences between these parts?

A: The KBPC1504W-G has an extended operating temperature range (150°C maximum junction temperature versus 125°C) and slightly lower forward voltage (1.1V versus 1.2V at 7.5A). Both differences favor the substitute part. The MB154W-BP is obsolete; the KBPC1504W-G is actively produced.

Q: Are there any compliance or certification differences?

A: Both parts are ROHS3 compliant, REACH unaffected, and carry identical moisture sensitivity levels (MSL 1 - Unlimited). No compliance barriers exist for substitution.

Q: Will the package fit the same PCB footprint?

A: Yes. Both components use identical 4-square through-hole package geometry. Physical installation requires no PCB layout changes.

Q: What is the impact of the lower forward voltage in the KBPC1504W-G?

A: Lower forward voltage reduces power dissipation in the rectifier, resulting in lower heat generation and improved efficiency. This is a beneficial characteristic for thermal management.

Q: Is the extended temperature range of the KBPC1504W-G a concern?

A: No. The extended range (to 150°C) provides additional thermal margin and does not introduce compatibility issues. It represents an improvement over the original specification.