W04M Bridge Rectifier Single Phase 400V 1.5A Equivalent & Substitute Parts

Part Overview

The W04M is a single-phase bridge rectifier manufactured by GeneSiC Semiconductor, rated for 400 V peak reverse voltage and 1.5 A average rectified current. This component is classified as obsolete, indicating discontinuation from the original manufacturer. Locating functionally equivalent substitute parts is necessary to support ongoing maintenance, repair, and new design requirements where this rectifier specification remains applicable.

Substiute Parts

W04M

GeneSiC SemiconductorIn Stock: 8027W04M Datasheet

Current PartRFQ

W04G-E4/51

Vishay General Semiconductor - Diodes DivisionIn Stock: 4497W04G-E4/51 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the W04M bridge rectifier are identified based on strict electrical and mechanical parameter matching. The substitution criteria are:

Critical Matching Parameters:

• Diode Type: Single Phase
• Technology: Standard
• Voltage - Peak Reverse (Max): 400 V (minimum requirement)
• Current - Average Rectified (Io): 1.5 A (minimum requirement)
• Mounting Type: Through Hole
• Package Configuration: 4-Circular format

The W04G-E4/51 manufactured by Vishay General Semiconductor - Diodes Division meets all critical electrical specifications and maintains through-hole mounting compatibility. Both parts operate within the 400 V / 1.5 A classification and utilize standard bridge rectifier technology.

Parameter Comparison

Engineering Selection Recommendations

The W04G-E4/51 is the identified substitute for the obsolete W04M based on electrical parameter equivalence and active product status.

Compliance Considerations:

• The W04G-E4/51 carries ROHS3 compliance certification, whereas the W04M compliance status is not specified.
• Both parts are classified under ECCN EAR99 for export control purposes.
• The W04G-E4/51 is designated REACH Unaffected, confirming regulatory alignment for European markets.

Operational Advantages:

• The W04G-E4/51 demonstrates lower reverse leakage current (5 µA versus 10 µA at 400 V), indicating improved leakage performance.
• Extended upper operating temperature limit (150°C versus 125°C) provides additional thermal margin in high-temperature applications.

Physical Compatibility:

• Both parts utilize 4-circular through-hole packaging with identical electrical footprints (WOM and WOG designations represent equivalent mechanical configurations).
• Direct board-level substitution is supported without layout modification.

Frequently Asked Questions (FAQ)

Q: Can the W04G-E4/51 directly replace the W04M in existing designs?

A: Yes. Both parts share identical electrical ratings (400 V, 1.5 A), forward voltage characteristics (1 V @ 1 A), and through-hole mounting configuration. The 4-circular package footprint is mechanically compatible between WOM and WOG variants.

Q: What is the significance of the lower reverse leakage current in the W04G-E4/51?

A: The W04G-E4/51 exhibits 5 µA reverse leakage at 400 V compared to 10 µA for the W04M. This represents improved leakage performance and may provide benefits in applications sensitive to standby current or leakage-induced noise.

Q: Does the extended operating temperature range of the W04G-E4/51 affect substitution suitability?

A: The W04G-E4/51 operating range (-55°C ~ 150°C) encompasses the W04M range (-65°C ~ 125°C) with the exception of the lower temperature limit. For applications requiring operation below -55°C, the W04M specification must be retained. For standard industrial applications within -55°C ~ 125°C, the W04G-E4/51 is fully suitable.

Q: Are there packaging differences between WOM and WOG designations?

A: Both designations refer to 4-circular through-hole bridge rectifier packages. The letters (M and G) identify the original manufacturer series. Mechanical and electrical footprints are equivalent, supporting direct substitution on printed circuit boards.

Q: What compliance certifications should be considered when selecting the W04G-E4/51?

A: The W04G-E4/51 is ROHS3 compliant and REACH unaffected. These certifications confirm suitability for applications subject to European environmental and chemical regulations. Verify compliance requirements for your specific application and regional market.

Q: Is the W04M still available for procurement?

A: The W04M is classified as obsolete. The W04G-E4/51 is the active substitute with confirmed inventory availability. For new designs and ongoing production, the W04G-E4/51 is the recommended selection.