MB351W-BP Bridge Rectifier Single Phase 100V 35A Equivalent & Substitute Parts

Part Overview

The MB351W-BP is a single-phase bridge rectifier manufactured by Micro Commercial Co, rated for 100V peak reverse voltage and 35A average rectified current. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing production and maintenance applications. The MB351W-BP features a through-hole 4-Square MB-35W package and operates across a temperature range of -55°C to 150°C.

Substiute Parts

MB351W-BP

Micro Commercial CoIn Stock: 945MB351W-BP Datasheet

Current PartRFQ

KBPC3501W-G

Comchip TechnologyIn Stock: 1097KBPC3501W-G Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MB351W-BP is determined by strict equivalence across the following critical parameters:

• Diode Type: Single Phase
• Technology: Standard
• Voltage - Peak Reverse (Max): 100 V
• Current - Average Rectified (Io): 35 A
• Mounting Type: Through Hole
• Operating Temperature Range: -55°C ~ 150°C (TJ)
• RoHS Status: ROHS3 Compliant

The KBPC3501W-G manufactured by Comchip Technology meets all these criteria and qualifies as a direct substitute. Both parts maintain identical electrical ratings, temperature specifications, and regulatory compliance. Package designation differences (MB-35W versus KBPC-W) represent manufacturer-specific nomenclature for the same 4-Square through-hole form factor.

Parameter Comparison

Engineering Selection Recommendations

The KBPC3501W-G is the qualified substitute for the obsolete MB351W-BP. Both components are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements. The KBPC3501W-G maintains active product status with confirmed inventory availability, eliminating supply chain risk associated with the obsolete MB351W-BP.

The forward voltage specification of the KBPC3501W-G (1.1 V @ 17.5 A) is marginally lower than the MB351W-BP (1.2 V @ 17.5 A), representing improved efficiency characteristics within the same electrical class. All other electrical and thermal parameters are identical, ensuring functional equivalence in circuit applications.

Frequently Asked Questions (FAQ)

Q: Can the KBPC3501W-G directly replace the MB351W-BP in existing designs?

A: Yes. Both components share identical voltage ratings (100V peak reverse), current ratings (35A average rectified), temperature operating range (-55°C to 150°C), and through-hole mounting configuration. The 4-Square package footprint is mechanically compatible between both parts.

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

A: The KBPC3501W-G exhibits a forward voltage of 1.1V compared to the MB351W-BP at 1.2V, both measured at 17.5A. This 0.1V difference results in lower power dissipation in the substitute part, representing a performance improvement rather than a limitation.

Q: Are there compliance or certification differences between these parts?

A: Both the MB351W-BP and KBPC3501W-G are ROHS3 compliant with MSL rating of 1 (Unlimited). Both carry identical ECCN (EAR99) and HTSUS (8541.10.0080) classifications.

Q: Why is the MB351W-BP marked as obsolete?

A: Obsolete status indicates the part is no longer manufactured by Micro Commercial Co. The KBPC3501W-G from Comchip Technology provides an active, in-stock alternative with equivalent electrical specifications.

Q: Are there packaging differences that affect PCB layout?

A: Both parts use 4-Square through-hole packages with manufacturer-specific designations (MB-35W and KBPC-W). The physical footprint and lead configuration are compatible. Verify specific lead spacing against your PCB design documentation.