MB356W Bridge Rectifier - Equivalent & Substitute Parts

Part Overview

The MB356W is a single-phase bridge rectifier manufactured by Diodes Incorporated, rated for 600 V peak reverse voltage and 35 A average rectified current. This component is designed for through-hole mounting applications requiring standard bridge rectification in industrial and power conversion circuits. The MB356W is classified as obsolete, making identification of compatible substitute parts essential for ongoing system maintenance and new design implementations.

Key Parameters

Parameter	Value
Diode Type	Single Phase
Technology	Standard
Voltage - Peak Reverse (Max)	600 V
Current - Average Rectified (Io)	35 A
Voltage - Forward (Vf) (Max) @ If	1.2 V @ 17.5 A
Current - Reverse Leakage @ Vr	10 µA @ 600 V
Operating Temperature Range	-55°C ~ 150°C (TJ)
Mounting Type	Through Hole
Package / Case	4-Square, MB-W
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the MB356W is determined by strict equivalence across the following critical parameters:

Diode Type & Technology: Single Phase, Standard technology
Voltage Rating: 600 V peak reverse voltage (Vr Max)
Current Rating: 35 A average rectified current (Io)
Mounting Configuration: Through-hole mounting
Package Form Factor: 4-Square case style
Thermal Range: -55°C to 150°C junction temperature capability
Regulatory Compliance: ROHS3 and REACH compliance

The GBPC3506W-E4/51 meets all these criteria and is classified as an active product, providing long-term availability and supply chain continuity.

Parameter Comparison

Parameter	MB356W (Diodes Inc.)	GBPC3506W-E4/51 (Vishay)	Compatibility
Diode Type	Single Phase	Single Phase	Equivalent
Technology	Standard	Standard	Equivalent
Voltage - Peak Reverse (Max)	600 V	600 V	Equivalent
Current - Average Rectified (Io)	35 A	35 A	Equivalent
Voltage - Forward (Vf) (Max) @ If	1.2 V @ 17.5 A	1.1 V @ 17.5 A	Compatible (Lower Vf)
Current - Reverse Leakage @ Vr	10 µA @ 600 V	5 µA @ 600 V	Compatible (Lower Leakage)
Operating Temperature Range	-55°C ~ 150°C (TJ)	-55°C ~ 150°C (TJ)	Equivalent
Mounting Type	Through Hole	Through Hole	Equivalent
Package / Case	4-Square, MB-W	4-Square, GBPC-W	Equivalent Form Factor
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Equivalent
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	Equivalent
REACH Status	REACH Affected	REACH Affected	Equivalent
Product Status	Obsolete	Active	Substitute Available

Engineering Selection Recommendations

The GBPC3506W-E4/51 is the direct substitute for the MB356W based on electrical and mechanical parameter equivalence. Selection of this substitute is supported by:

Regulatory Compliance: Both components maintain ROHS3 and REACH compliance, ensuring compatibility with current environmental and safety standards.
Product Status: The GBPC3506W-E4/51 is classified as active, providing assured long-term availability and supply chain stability compared to the obsolete MB356W.
Electrical Performance: The substitute demonstrates equivalent or superior electrical characteristics, including lower forward voltage drop (1.1 V vs. 1.2 V) and reduced reverse leakage current (5 µA vs. 10 µA), resulting in improved thermal efficiency.
Physical Compatibility: Identical through-hole mounting configuration and 4-square package form factor enable direct mechanical substitution without circuit board redesign.

Frequently Asked Questions (FAQ)

Q: Can the GBPC3506W-E4/51 be used as a direct replacement for the MB356W in existing applications?

A: Yes. The GBPC3506W-E4/51 meets all electrical and mechanical specifications of the MB356W. The 4-square through-hole package form factor is identical, and electrical ratings for voltage, current, and temperature range are equivalent. The substitute exhibits improved performance characteristics with lower forward voltage and leakage current.

Q: What is the difference between the MB-W and GBPC-W package designations?

A: Both designations refer to 4-square through-hole bridge rectifier packages with identical physical dimensions and pin configurations. The different designations reflect manufacturer-specific nomenclature; the packages are mechanically and electrically interchangeable.

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

A: No. Both the MB356W and GBPC3506W-E4/51 are ROHS3 compliant and REACH affected. Moisture sensitivity level is identical at MSL 1 (Unlimited). Both components carry the same ECCN (EAR99) and HTSUS (8541.10.0080) classifications.

Q: Why does the GBPC3506W-E4/51 have lower forward voltage and reverse leakage specifications?

A: The lower values represent improved performance characteristics of the Vishay component. These differences are within acceptable engineering tolerances and result in reduced power dissipation and improved circuit efficiency. Both components meet the 600 V / 35 A rating requirements.

Q: Is the GBPC3506W-E4/51 available in the same packaging format?

A: Yes. The GBPC3506W-E4/51 is supplied in a box packaging format, while the MB356W inventory information does not specify packaging detail. Both components use identical 4-square through-hole case styles suitable for standard PCB assembly processes.

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