W04G Bridge Rectifier Single Phase 400V 1.5A Equivalent & Substitute Parts

Part Overview

The W04G is a single-phase bridge rectifier rated for 400V peak reverse voltage with 1.5A average rectified current, housed in a 4-Circular WOG through-hole package. This component is classified as obsolete, making identification of equivalent substitute parts essential for ongoing design support and procurement continuity. The W04G-E4/51 serves as the manufacturer-recommended substitute, offering identical electrical specifications with active product status.

Substiute Parts

W04G

Diodes IncorporatedIn Stock: 2440W04G Datasheet

Current PartRFQ

W04G-E4/51

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

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the W04G is determined by strict equivalence across the following critical parameters:

• Diode Type: Single Phase
• Voltage - Peak Reverse (Max): 400 V
• Current - Average Rectified (Io): 1.5 A
• Mounting Type: Through Hole
• Package / Case: 4-Circular, WOG

The W04G-E4/51 meets all substitution criteria. Both parts share identical peak reverse voltage, average rectified current, and package configuration. The substitute maintains the same electrical performance envelope required for direct replacement in existing designs.

Parameter Comparison

Engineering Selection Recommendations

The W04G is obsolete and no longer in active production. The W04G-E4/51 is the manufacturer-recommended substitute and maintains active product status. Both parts are ROHS3 compliant and classified under identical ECCN and HTSUS codes, ensuring regulatory and compliance alignment.

The W04G-E4/51 exhibits a narrower operating temperature range (-55°C to 150°C versus -65°C to 150°C), which is acceptable for applications operating within the -55°C minimum threshold. Forward voltage specification differs slightly at the measurement point (1 A versus 1.5 A), but both maintain the 1 V maximum rating and are functionally equivalent for circuit operation.

Selection of the W04G-E4/51 is appropriate for all applications previously using the W04G, provided the operating environment remains within the -55°C to 150°C range.

Frequently Asked Questions (FAQ)

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

A: Yes. Both parts share identical peak reverse voltage (400 V), average rectified current (1.5 A), and 4-Circular WOG package configuration. The W04G-E4/51 is the manufacturer-recommended substitute.

Q: What is the difference in operating temperature range between these parts?

A: The W04G operates from -65°C to 150°C, while the W04G-E4/51 operates from -55°C to 150°C. The substitute has a higher minimum temperature limit. Verify that your application does not require operation below -55°C before selecting the substitute.

Q: Are there differences in forward voltage specifications?

A: The W04G specifies 1 V maximum at 1.5 A, while the W04G-E4/51 specifies 1 V maximum at 1 A. Both maintain the same 1 V maximum rating and are functionally equivalent for circuit design purposes.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the W04G and W04G-E4/51 are ROHS3 compliant and carry identical ECCN (EAR99) and HTSUS (8541.10.0080) classifications.

Q: What is the package configuration for these bridge rectifiers?

A: Both parts use a 4-Circular WOG through-hole package, ensuring mechanical and electrical compatibility in PCB layouts designed for the W04G.