MB14M-BP Bridge Rectifier Equivalent & Substitute Parts

Part Overview

The MB14M-BP is a single-phase bridge rectifier manufactured by Micro Commercial Co, designed for 40 V peak reverse voltage applications with 1 A average rectified current. This component uses Schottky technology and is housed in a 4-DIP (0.200", 5.08mm) through-hole package. The part is currently obsolete, making identification of suitable substitute components necessary for ongoing system support and new design implementations.

Substiute Parts

MB14M-BP

Micro Commercial CoIn Stock: 991MB14M-BP Datasheet

Current PartRFQ

DF02M-E3/45

Vishay General Semiconductor - Diodes DivisionIn Stock: 28667DF02M-E3/45 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MB14M-BP is determined by the following critical parameters:

• Single-phase bridge rectifier configuration
• Through-hole mounting compatibility
• Current rating of 1 A average rectified current
• Operating temperature range of -55°C to 150°C
• RoHS3 compliance and MSL Level 1 rating

The DF02M-E3/45 qualifies as a substitute based on matching these core functional and compliance requirements. While the DF02M-E3/45 features a higher peak reverse voltage rating (200 V versus 40 V) and different diode technology (Standard versus Schottky), these differences represent design margin improvements rather than incompatibilities. The substitute maintains identical current handling, temperature range, mounting type, and regulatory compliance.

Parameter Comparison

Engineering Selection Recommendations

The DF02M-E3/45 is suitable as a substitute for the MB14M-BP based on the following factors:

• Both components maintain identical current ratings (1 A average rectified current) and operating temperature ranges (-55°C to 150°C)
• Both achieve RoHS3 compliance and MSL Level 1 rating, ensuring regulatory and environmental compatibility
• The DF02M-E3/45 is an active product with established supply availability, addressing the obsolescence status of the MB14M-BP
• The higher peak reverse voltage rating (200 V) of the substitute provides additional design margin for the original 40 V application requirement
• Through-hole mounting is maintained, supporting direct PCB integration without layout modifications

Package footprint differences exist between the two components (4-DIP at 0.200" versus 4-EDIP at 0.300"), requiring PCB layout evaluation for physical fit.

Frequently Asked Questions (FAQ)

Q: Can the DF02M-E3/45 directly replace the MB14M-BP without circuit modifications?

A: The DF02M-E3/45 maintains functional compatibility in terms of current handling, voltage operation, and temperature range. However, the package footprint differs (4-DIP versus 4-EDIP), requiring PCB layout assessment. Forward voltage characteristics differ (500 mV versus 1.1 V at 1 A), which may affect power dissipation calculations in the application circuit.

Q: What are the key differences between these two bridge rectifiers?

A: The primary differences are diode technology (Schottky versus Standard), peak reverse voltage rating (40 V versus 200 V), forward voltage drop (500 mV versus 1.1 V), and package dimensions (0.200" versus 0.300" spacing). Both maintain identical current ratings, temperature ranges, and compliance certifications.

Q: Is the higher voltage rating of the DF02M-E3/45 a concern for a 40 V application?

A: No. A higher voltage rating provides additional design margin and does not create incompatibility. The substitute is rated for 200 V peak reverse voltage, which exceeds the original 40 V requirement.

Q: Are there any compliance or regulatory differences between these parts?

A: Both components are RoHS3 compliant with MSL Level 1 rating. No regulatory or compliance barriers exist for substitution.

Q: What should be considered before implementing this substitute?

A: Evaluate PCB layout compatibility with the different package footprint (4-EDIP versus 4-DIP). Assess whether the increased forward voltage drop (1.1 V versus 500 mV) affects thermal or efficiency requirements in the application circuit.