MB354W-BP Bridge Rectifier Single Phase 400V 35A Equivalent & Substitute Parts

Part Overview

The MB354W-BP is a single-phase bridge rectifier manufactured by Micro Commercial Co, rated for 400V peak reverse voltage and 35A 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 through-hole MB-35W package configuration requires compatible alternatives with identical mechanical and electrical specifications to ensure direct replacement capability.

Substiute Parts

MB354W-BP

Micro Commercial CoIn Stock: 775MB354W-BP Datasheet

Current PartRFQ

KBPC3504W-G

Comchip TechnologyIn Stock: 1931KBPC3504W-G Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MB354W-BP is determined by strict equivalence across the following critical parameters:

• Diode Type: Single Phase bridge rectifier configuration
• Voltage Rating: 400V peak reverse voltage (Vrrm)
• Current Rating: 35A average rectified current (Io)
• Forward Voltage: Maximum 1.2V @ 17.5A
• Reverse Leakage: 10µA @ 400V
• Mounting: Through-hole configuration
• Package: 4-Square form factor (MB-35W or equivalent mechanical footprint)
• Temperature Range: -55°C to 150°C junction temperature
• Compliance: ROHS3 compliant, MSL Level 1

The KBPC3504W-G from Comchip Technology meets all substitution criteria and maintains full electrical and mechanical compatibility with the MB354W-BP.

Parameter Comparison

Engineering Selection Recommendations

The KBPC3504W-G is a direct substitute for the MB354W-BP based on complete electrical and mechanical parameter equivalence. The substitute part maintains identical voltage and current ratings, operating temperature range, and package configuration. Both components are ROHS3 compliant with MSL Level 1 classification, ensuring equivalent environmental and regulatory compliance.

The KBPC3504W-G offers the additional advantage of active product status, ensuring continued availability and supply chain stability compared to the obsolete MB354W-BP. The forward voltage specification of the KBPC3504W-G (1.1V @ 17.5A) is marginally superior to the MB354W-BP (1.2V @ 17.5A), resulting in reduced power dissipation during operation.

Frequently Asked Questions (FAQ)

Q: Can the KBPC3504W-G replace the MB354W-BP in existing applications?

A: Yes. The KBPC3504W-G is a direct electrical and mechanical equivalent. Both components share identical voltage ratings (400V), current ratings (35A), temperature ranges (-55°C to 150°C), and 4-square through-hole package configurations. No circuit modifications are required.

Q: What is the difference in forward voltage between these parts?

A: The MB354W-BP specifies a maximum forward voltage of 1.2V @ 17.5A, while the KBPC3504W-G specifies 1.1V @ 17.5A. This 0.1V difference results in lower power dissipation with the KBPC3504W-G, improving thermal performance in the application.

Q: Are both parts RoHS compliant?

A: Yes. Both the MB354W-BP and KBPC3504W-G are ROHS3 compliant with MSL Level 1 (unlimited moisture sensitivity level), meeting equivalent environmental and regulatory requirements.

Q: Why is the MB354W-BP listed as obsolete?

A: The MB354W-BP is classified as obsolete by the manufacturer. The KBPC3504W-G maintains active product status, ensuring long-term availability and supply chain continuity for new designs and system replacements.

Q: Are the package dimensions identical between MB-35W and KBPC-W?

A: Both components use 4-square through-hole package configurations with equivalent mechanical footprints, enabling direct board-level substitution without PCB layout modifications.

Q: What are the reverse leakage specifications?

A: Both the MB354W-BP and KBPC3504W-G specify identical reverse leakage current of 10µA @ 400V, ensuring equivalent leakage performance in DC blocking and reverse voltage applications.