W005G-E4/51 Equivalent & Substitute Parts

Part Overview

The W005G-E4/51 is a single-phase bridge rectifier manufactured by Vishay General Semiconductor - Diodes Division, rated for 50 V peak reverse voltage and 1.5 A average rectified current. This component is designed for through-hole mounting applications requiring standard bridge rectification in compact form factors. The part maintains active product status with 1920 units in current inventory stock.

Substitute parts become necessary when the original W005G-E4/51 experiences supply constraints, packaging incompatibilities with assembly processes, or when design requirements permit operation within the electrical parameter tolerances of alternative qualified components.

Substiute Parts

W005G-E4/51

Vishay General Semiconductor - Diodes DivisionIn Stock: 2012W005G-E4/51 Datasheet

Current PartRFQ

KBU35005-G

Comchip TechnologyIn Stock: 1160KBU35005-G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the W005G-E4/51 is determined by the following critical parameters:

Voltage Rating Compatibility: The substitute part must maintain a peak reverse voltage rating of 50 V or greater to ensure safe operation within the original circuit design envelope.

Current Rating Compatibility: The substitute part must support an average rectified current rating of 1.5 A or greater. Parts with higher current ratings remain functionally compatible as they operate within the same voltage class and maintain backward compatibility with lower-current applications.

Forward Voltage Characteristics: The substitute part must not exceed the maximum forward voltage drop of 1 V at 1 A to preserve circuit efficiency and thermal performance margins.

Reverse Leakage Current: The substitute part must maintain reverse leakage current specifications at or below 5 µA at 50 V to ensure acceptable standby power consumption and circuit reliability.

Thermal Operating Range: The substitute part must support the full operating temperature range of -55°C to 150°C (junction temperature) to maintain performance across all specified environmental conditions.

Mounting and Package Compatibility: The substitute part must use through-hole mounting technology compatible with existing PCB layouts and assembly processes.

Regulatory Compliance: The substitute part must maintain ROHS3 compliance and REACH unaffected status to satisfy supply chain and environmental requirements.

The KBU35005-G qualifies as a substitute based on these criteria: it maintains the 50 V voltage rating, exceeds the 1.5 A current requirement at 35 A, operates within the specified temperature range, uses through-hole mounting, and maintains equivalent regulatory compliance.

Parameter Comparison

Engineering Selection Recommendations

The W005G-E4/51 maintains active product status with confirmed inventory availability, making it the primary selection for new designs and production orders. This part satisfies all regulatory requirements including ROHS3 compliance and REACH unaffected status.

The KBU35005-G qualifies as an electrical and mechanical substitute based on parameter compatibility within the specified operating envelope. However, this part carries obsolete product status, indicating discontinued manufacturing and potential long-term supply unavailability. The KBU35005-G should be considered only when the W005G-E4/51 experiences temporary supply constraints or when existing designs already incorporate this component.

Package geometry differences exist between the two parts: the W005G-E4/51 uses a 4-Circular WOG package while the KBU35005-G uses a 4-SIP KBU package. PCB layout modifications may be required to accommodate the different footprint geometry, and mechanical clearance verification is necessary before implementation.

The KBU35005-G exhibits higher reverse leakage current (10 µA versus 5 µA at 50 V), which may impact standby power consumption in battery-powered or low-power applications. Forward voltage characteristics remain comparable across the specified operating points.

Frequently Asked Questions (FAQ)

Q: Can the KBU35005-G directly replace the W005G-E4/51 without circuit modifications?

A: Electrical substitution is valid based on voltage, current, and thermal parameters. However, package geometry differences require PCB footprint verification. The 4-Circular WOG and 4-SIP KBU packages have different lead spacing and mounting hole configurations. Physical layout compatibility must be confirmed before implementation.

Q: What is the impact of the higher reverse leakage current in the KBU35005-G?

A: The KBU35005-G exhibits 10 µA reverse leakage at 50 V compared to 5 µA in the W005G-E4/51. This difference is acceptable for most applications but may be significant in low-power or battery-powered circuits where standby current consumption is critical. Thermal analysis should be performed if the application operates continuously at maximum reverse voltage.

Q: Why is the KBU35005-G listed as obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. While existing inventory may be available through distributors, long-term supply cannot be guaranteed. New designs should prioritize the active W005G-E4/51 to ensure sustained component availability throughout the product lifecycle.

Q: Are there electrical performance differences between the two parts?

A: Both parts maintain identical 50 V peak reverse voltage ratings and -55°C to 150°C operating temperature ranges. The KBU35005-G provides significantly higher current capacity (35 A versus 1.5 A), making it suitable for higher-power applications while remaining backward compatible with lower-current designs. Forward voltage characteristics are comparable at their respective rated currents.

Q: What assembly considerations apply when switching between these parts?

A: The different package types require separate PCB designs or rework procedures. The WOG package uses circular lead geometry while the KBU package uses standard SIP lead configuration. Verify lead diameter, spacing, and hole sizing compatibility with existing assembly equipment and tooling before production implementation.