Bridge Rectifier 2W04M Single Phase 400V 2A Equivalent & Substitute Parts

Part Overview

The 2W04M is a single-phase bridge rectifier manufactured by GeneSiC Semiconductor, rated for 400V peak reverse voltage and 2A average rectified current. This component is classified as obsolete, making identification of functionally equivalent substitute parts essential for ongoing system maintenance and new design implementations. The through-hole WOM package configuration and standard rectification technology establish the baseline for substitute part selection.

Substiute Parts

2W04M

GeneSiC SemiconductorIn Stock: 9752W04M Datasheet

Current PartRFQ

2W04G-E4/51

Vishay General Semiconductor - Diodes DivisionIn Stock: 35852W04G-E4/51 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 2W04M bridge rectifier are selected based on strict electrical and mechanical parameter matching within the single-phase bridge rectifier category. The substitution criteria are:

Primary Matching Parameters:

• Diode Type: Single Phase (mandatory)
• Technology: Standard (mandatory)
• Voltage - Peak Reverse (Max): 400 V (mandatory)
• Current - Average Rectified (Io): 2 A (mandatory)
• Mounting Type: Through Hole (mandatory)

Secondary Compatibility Parameters:

• Voltage - Forward (Vf) (Max) @ If: 1.1 V @ 2 A (allowable tolerance range)
• Current - Reverse Leakage @ Vr: ≤ 10 µA @ 400 V (equal or lower acceptable)
• Operating Temperature Range: Must encompass or exceed -65°C to 125°C
• Package / Case: 4-Circular configuration (mechanical compatibility)

The 2W04G-E4/51 manufactured by Vishay General Semiconductor - Diodes Division meets all primary and secondary matching criteria and is classified as an active product with enhanced specifications.

Parameter Comparison

Engineering Selection Recommendations

The 2W04G-E4/51 from Vishay General Semiconductor - Diodes Division is the qualified substitute for the obsolete 2W04M. Selection is based on the following engineering criteria:

Electrical Equivalence: All primary electrical parameters match exactly: 400V peak reverse voltage, 2A average rectified current, and 1.1V forward voltage at 2A. The 2W04G-E4/51 exhibits lower reverse leakage current (5 µA versus 10 µA), which represents improved performance within acceptable tolerance.

Thermal Performance: The 2W04G-E4/51 supports an extended operating temperature range (-55°C to 150°C) compared to the 2W04M (-65°C to 125°C). This extended range provides additional design margin for thermal management.

Mechanical Compatibility: Both components utilize 4-Circular through-hole package configurations (WOM and WOG respectively), ensuring direct mechanical interchangeability in existing PCB layouts without modification.

Product Status and Compliance: The 2W04G-E4/51 is an active product with ROHS3 compliance and REACH unaffected status, providing long-term supply chain stability and regulatory alignment.

Packaging Availability: The 2W04G-E4/51 is available in bulk packaging with 3528 pieces in current inventory, supporting both prototype and production-volume requirements.

Frequently Asked Questions (FAQ)

Q: Can the 2W04G-E4/51 be used as a direct replacement for the 2W04M in existing designs?

A: Yes. The 2W04G-E4/51 meets all electrical and mechanical specifications required for direct substitution. The through-hole package configuration is identical, and all electrical parameters are equivalent or superior. No circuit modifications are required.

Q: What is the difference between the WOM and WOG package designations?

A: WOM and WOG are manufacturer-specific package codes for 4-Circular through-hole bridge rectifier configurations. Both designations indicate the same physical form factor and pin configuration, with differences limited to internal manufacturing processes and supplier identification.

Q: Why does the 2W04G-E4/51 have lower reverse leakage current than the 2W04M?

A: The 2W04G-E4/51 exhibits 5 µA reverse leakage at 400V compared to 10 µA for the 2W04M. This difference reflects manufacturing process improvements in the Vishay component and represents enhanced performance. Lower leakage current is beneficial for applications requiring minimal standby power consumption.

Q: Is the extended operating temperature range of the 2W04G-E4/51 (-55°C to 150°C) a concern for compatibility?

A: No. The extended range is a performance enhancement. The 2W04G-E4/51 operates within the original 2W04M temperature specification (-65°C to 125°C) and provides additional margin beyond these limits. This is advantageous for applications with demanding thermal environments.

Q: What is the significance of ROHS3 compliance on the 2W04G-E4/51?

A: ROHS3 compliance indicates the component meets Restriction of Hazardous Substances Directive requirements, restricting lead, cadmium, mercury, and other hazardous materials. This certification is relevant for applications subject to environmental regulations and supports long-term supply chain sustainability.

Q: Are there any electrical performance differences that would affect circuit operation?

A: No. The forward voltage (1.1V @ 2A) and peak reverse voltage (400V) are identical. The lower reverse leakage current of the 2W04G-E4/51 is a performance improvement that does not negatively impact circuit operation. All rectification characteristics remain equivalent.

Q: What inventory considerations should be evaluated for the 2W04G-E4/51?

A: The 2W04G-E4/51 is available in bulk packaging with 3528 pieces currently in stock, providing immediate availability for both prototype development and production implementation. The 2W04M, being obsolete, has limited remaining inventory (950 pieces) and should not be specified for new designs.