MMB6G-G Bridge Rectifier Equivalent & Substitute Parts

Part Overview

The MMB6G-G is a single-phase bridge rectifier manufactured by Comchip Technology, rated for 600 V peak reverse voltage and 800 mA average rectified current. This component is classified as obsolete, making identification of equivalent substitute parts essential for ongoing design support and procurement continuity. Bridge rectifiers in this voltage and current class are widely used in power supply circuits, battery charging systems, and AC-to-DC conversion applications where single-phase rectification is required.

Substiute Parts

MMB6G-G

Comchip TechnologyIn Stock: 1088MMB6G-G Datasheet

Current PartRFQ

MB6F

MDDIn Stock: 125277MB6F Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MMB6G-G is determined by strict equivalence across the following critical parameters:

• Voltage Rating: Peak reverse voltage must equal or exceed 600 V
• Current Rating: Average rectified current must support 800 mA minimum
• Forward Voltage Drop: Maximum forward voltage at rated current must not exceed 1.1 V @ 800 mA
• Reverse Leakage: Leakage current characteristics at rated voltage
• Package Configuration: 4-SMD, Gull Wing surface mount package
• Diode Type & Technology: Single-phase standard bridge rectifier topology
• Temperature Range: Operating range of -55°C to 150°C (TJ)

The MB6F meets all these criteria and qualifies as a parametric equivalent substitute.

Parameter Comparison

Engineering Selection Recommendations

The MB6F manufactured by MDD is a direct parametric equivalent to the obsolete MMB6G-G. Selection between these parts should be based on the following factors:

Product Status: The MB6F carries Active product status with ROHS3 compliance and REACH Unaffected designation, providing long-term availability and regulatory alignment for new designs and production continuity.

Compliance & Certifications: Both parts share identical ECCN (EAR99) and HTSUS (8541.10.0080) classifications. The MB6F includes explicit RoHS3 compliance documentation, which may be required for applications subject to environmental regulations.

Reverse Leakage Performance: The MB6F exhibits lower reverse leakage current (1 µA @ 600 V) compared to the MMB6G-G (5 µA @ 600 V), representing improved leakage characteristics that may benefit high-impedance or precision rectification circuits.

Inventory & Availability: The MB6F maintains significantly higher stock levels (125,200 pcs) relative to the MMB6G-G (1,015 pcs), supporting immediate procurement and supply chain stability.

Frequently Asked Questions (FAQ)

Q: Can the MB6F directly replace the MMB6G-G in existing designs?

A: Yes. The MB6F meets all electrical and mechanical parameters specified for the MMB6G-G, including voltage rating, current capacity, forward voltage drop, operating temperature range, and package configuration. No circuit modifications are required.

Q: What is the significance of the lower reverse leakage current in the MB6F?

A: The MB6F's reverse leakage of 1 µA @ 600 V is lower than the MMB6G-G's 5 µA @ 600 V. This represents improved leakage performance and may provide marginal benefits in applications sensitive to standby current or leakage-induced noise, though both values remain within acceptable ranges for standard bridge rectifier applications.

Q: Are there any package or pinout differences between these parts?

A: No. Both parts use identical 4-SMD, Gull Wing surface mount packaging. PCB footprints, solder pad layouts, and component placement are interchangeable.

Q: Why is RoHS3 compliance important for the MB6F?

A: RoHS3 compliance indicates the part meets current European Union Restriction of Hazardous Substances regulations. For applications subject to environmental or procurement standards requiring RoHS compliance, the MB6F provides documented regulatory alignment.

Q: Is the MB6F suitable for new product designs?

A: Yes. The MB6F carries Active product status, indicating ongoing manufacturer support and availability. It is appropriate for both legacy replacement applications and new design implementations.