MB2M-G Bridge Rectifier Equivalent & Substitute Parts

Part Overview

The MB2M-G is a single-phase bridge rectifier diode manufactured by Comchip Technology, rated for 200 V peak reverse voltage and 800 mA 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 MBM package configuration and standard rectification technology establish the baseline for compatible alternatives.

Substiute Parts

MB2M-G

Comchip TechnologyIn Stock: 1001MB2M-G Datasheet

Current PartRFQ

DF02M

onsemiIn Stock: 2157DF02M Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MB2M-G is determined by the following critical parameters:

• Voltage Rating: Peak reverse voltage must be 200 V or greater
• Current Rating: Average rectified current must meet or exceed 800 mA
• Diode Type: Single-phase bridge rectifier configuration
• Technology: Standard rectification technology
• Mounting: Through-hole configuration for PCB compatibility
• Package Compatibility: 4-DIP package footprint with pin spacing of 0.200" (5.08mm) or 0.300" (7.62mm)
• Temperature Range: Operating range of -55°C to 150°C (TJ)

The DF02M from onsemi meets these substitution criteria with equivalent or superior electrical characteristics and maintains through-hole mounting compatibility.

Parameter Comparison

Engineering Selection Recommendations

The DF02M from onsemi is a direct functional substitute for the MB2M-G. The substitute part provides superior current handling capability (1.5 A versus 800 mA) while maintaining identical voltage ratings, forward voltage characteristics, and operating temperature range. Both components are classified as obsolete, indicating limited future availability.

The DF02M offers additional compliance advantages: ROHS3 certification and REACH unaffected status provide regulatory compliance for new designs and system updates. The package footprint difference (0.300" versus 0.200" pin spacing) requires PCB layout verification but does not affect electrical compatibility.

Selection of the DF02M is appropriate for direct replacement applications where PCB layout accommodates the 4-EDIP package spacing, or where the enhanced current rating provides design margin for existing or future circuit requirements.

Frequently Asked Questions (FAQ)

Q: Can the DF02M directly replace the MB2M-G without PCB modifications?

A: Electrical substitution is direct. However, the DF02M uses 4-EDIP package with 0.300" (7.62mm) pin spacing compared to the MB2M-G 4-DIP with 0.200" (5.08mm) spacing. PCB footprint verification is required before installation.

Q: What is the significance of the current rating difference between MB2M-G (800 mA) and DF02M (1.5 A)?

A: The DF02M exceeds the MB2M-G current specification, providing design margin and thermal headroom. This higher rating does not create compatibility issues in applications designed for 800 mA operation.

Q: Are both parts suitable for new designs?

A: Both the MB2M-G and DF02M are classified as obsolete. For new designs, consultation of current manufacturer catalogs for active bridge rectifier alternatives is recommended. The DF02M is preferred over the MB2M-G due to ROHS3 and REACH compliance certifications.

Q: What are the key parameters that determine substitution eligibility?

A: Substitution is determined by matching or exceeding: peak reverse voltage (200 V), average rectified current (800 mA minimum), forward voltage characteristics (1.1 V), reverse leakage current (5 µA @ 200 V), operating temperature range (-55°C to 150°C), and through-hole mounting configuration with compatible 4-DIP package footprint.

Q: Does the DF02M have any compliance advantages over the MB2M-G?

A: Yes. The DF02M is ROHS3 compliant and REACH unaffected, whereas the MB2M-G compliance status is not specified. For applications requiring regulatory compliance documentation, the DF02M provides certified compliance.