W08G Bridge Rectifier Single Phase 800V 1.5A Equivalent & Substitute Parts

Part Overview

The W08G is a single-phase bridge rectifier manufactured by Diodes Incorporated, rated for 800V peak reverse voltage and 1.5A average rectified current in a through-hole WOG package. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement. The W08G-E4/51 from Vishay General Semiconductor - Diodes Division serves as the manufacturer-recommended substitute, maintaining electrical and mechanical compatibility while offering active product status.

Substiute Parts

W08G

Diodes IncorporatedIn Stock: 16424W08G Datasheet

Current PartRFQ

W08G-E4/51

Vishay General Semiconductor - Diodes DivisionIn Stock: 3001W08G-E4/51 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the W08G with the W08G-E4/51 is based on strict equivalence across the following critical parameters:

• Diode Type: Both are single-phase bridge rectifiers
• Technology: Both use standard rectifier technology
• Voltage - Peak Reverse (Max): Both rated at 800 V
• Current - Average Rectified (Io): Both rated at 1.5 A
• Current - Reverse Leakage @ Vr: Both specified at 5 µA @ 800 V
• Mounting Type: Both are through-hole components
• Package / Case: Both use 4-Circular WOG package
• RoHS Status: Both are ROHS3 compliant
• Moisture Sensitivity Level: Both rated MSL 1 (Unlimited)

The W08G-E4/51 maintains full electrical and mechanical compatibility with the W08G, enabling direct substitution in circuit designs.

Parameter Comparison

Engineering Selection Recommendations

The W08G-E4/51 is the manufacturer-recommended substitute for the obsolete W08G. Both components maintain ROHS3 compliance and identical electrical ratings for peak reverse voltage, average rectified current, and reverse leakage characteristics. The W08G-E4/51 offers the advantage of active product status, ensuring continued availability and manufacturing support.

The W08G-E4/51 operates across a narrower lower temperature range (-55°C versus -65°C), which should be evaluated against specific application requirements. Forward voltage specification for the W08G-E4/51 is provided at 1 A rather than 1.5 A, but both maintain the 1 V maximum rating. Identical through-hole WOG packaging ensures mechanical compatibility without PCB redesign.

Frequently Asked Questions (FAQ)

Q: Can the W08G-E4/51 directly replace the W08G in existing designs?

A: Yes. Both components share identical electrical ratings for peak reverse voltage (800 V), average rectified current (1.5 A), reverse leakage (5 µA @ 800 V), and package configuration (4-Circular WOG through-hole). Direct substitution is supported without circuit modification.

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

A: The W08G operates from -65°C to 150°C, while the W08G-E4/51 operates from -55°C to 150°C. Applications requiring operation below -55°C must retain the original W08G specification or identify alternative solutions.

Q: Are both parts RoHS compliant?

A: Yes. Both the W08G and W08G-E4/51 are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity ratings.

Q: Why is the W08G obsolete?

A: The W08G has been discontinued by Diodes Incorporated. The W08G-E4/51 from Vishay provides equivalent functionality with active manufacturing status.

Q: Do these parts require different PCB footprints?

A: No. Both components use identical 4-Circular WOG through-hole packaging, requiring no PCB layout changes for substitution.

Q: What is the difference in forward voltage specifications?

A: The W08G specifies 1 V maximum forward voltage at 1.5 A, while the W08G-E4/51 specifies 1 V maximum at 1 A. Both maintain the same 1 V maximum rating; the difference reflects the test current used in characterization.