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W08G Bridge Rectifier Single Phase 800V 1.5A Equivalent & Substitute Parts
Part Overview
The W08G is a single-phase bridge rectifier rated for 800V peak reverse voltage with 1.5A average rectified current, designed for through-hole mounting applications. This component is classified as obsolete, making identification of active equivalent parts essential for ongoing production and maintenance requirements. The W08G-E4/51 serves as a direct functional equivalent with identical electrical specifications and active product status.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Diode Type | Single Phase |
| Technology | Standard |
| Voltage - Peak Reverse (Max) | 800 V |
| Current - Average Rectified (Io) | 1.5 A |
| Voltage - Forward (Vf) (Max) @ If | 1 V @ 1 A |
| Current - Reverse Leakage @ Vr | 5 µA @ 800 V |
| Operating Temperature Range | -55°C ~ 150°C (TJ) |
| Mounting Type | Through Hole |
Substitute Part Grouping Explanation
The W08G-E4/51 qualifies as a direct substitute based on the following critical parameters:
- Identical voltage rating: 800V peak reverse voltage
- Identical current rating: 1.5A average rectified current
- Matching forward voltage characteristics: 1V maximum at 1A
- Identical reverse leakage specification: 5µA at 800V
- Matching operating temperature range: -55°C to 150°C
- Compatible mounting type: Through hole configuration
- Same diode classification: Single phase standard technology
The primary distinction is product status: W08G is obsolete while W08G-E4/51 maintains active status with current manufacturing support.
Parameter Comparison
| Parameter | W08G (onsemi) | W08G-E4/51 (Vishay) |
|---|---|---|
| Diode Type | Single Phase | Single Phase |
| Technology | Standard | Standard |
| Voltage - Peak Reverse (Max) | 800 V | 800 V |
| Current - Average Rectified (Io) | 1.5 A | 1.5 A |
| Voltage - Forward (Vf) (Max) @ If | 1 V @ 1 A | 1 V @ 1 A |
| Current - Reverse Leakage @ Vr | 5 µA @ 800 V | 5 µA @ 800 V |
| Operating Temperature Range | -55°C ~ 150°C (TJ) | -55°C ~ 150°C (TJ) |
| Mounting Type | Through Hole | Through Hole |
| Package / Case | 4-Circular, WOB | 4-Circular, WOG |
| Product Status | Obsolete | Active |
| RoHS Status | Not specified | ROHS3 Compliant |
Engineering Selection Recommendations
The W08G-E4/51 is the appropriate selection for applications currently using the W08G. Both components share identical electrical and thermal specifications, ensuring functional compatibility in existing circuit designs. The W08G-E4/51 maintains active product status with current manufacturing availability, addressing the obsolescence of the original W08G. The W08G-E4/51 carries ROHS3 compliance certification, meeting modern regulatory requirements for electronic component procurement.
Frequently Asked Questions (FAQ)
Q: Can W08G-E4/51 directly replace W08G in existing designs? A: Yes. Both components have identical voltage ratings (800V), current ratings (1.5A), forward voltage characteristics (1V @ 1A), reverse leakage (5µA @ 800V), and operating temperature range (-55°C to 150°C). Through-hole mounting compatibility is maintained.
Q: What is the difference between WOB and WOG package designations? A: Both designations refer to 4-circular through-hole packages. WOB and WOG represent different manufacturer package codes but maintain identical mechanical and electrical interfaces for this bridge rectifier category.
Q: Why is product status relevant for component selection? A: The W08G is classified as obsolete, indicating discontinued manufacturing and limited availability. The W08G-E4/51 maintains active status with ongoing production support and current inventory availability.
Q: Are there compliance differences between these parts? A: The W08G-E4/51 carries ROHS3 compliance certification. Both components are REACH unaffected and classified under ECCN EAR99 for export purposes.
Q: Can these components be used interchangeably in PCB designs? A: Yes, for through-hole applications. The identical electrical specifications and matching operating temperature ranges ensure functional interchangeability. PCB footprints designed for 4-circular through-hole packages accommodate both variants.
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