W04G-E4/51

Overview

The W04G-E4/51 is a general-purpose bridge rectifier manufactured by Vishay General Semiconductor. It features a single-phase configuration with a peak repetitive reverse voltage of 400 V and an average forward rectified current of 2 A at 75 °C. The device utilizes a glass-passivated junction for enhanced environmental resistance and reliability under various operating conditions. It is housed in a compact DO-201AB (DO-4) axial leaded package, designed for through-hole mounting on printed circuit boards. The unit operates within a standard junction temperature range and includes built-in surge current capability to handle transient loads effectively during power-up sequences.

Feature Summary

• Glass-passivated junction construction ensures high reliability and resistance to moisture and chemical exposure
• High surge current capability protects the component against transient overloads during initial power application
• Axial leaded package design facilitates easy integration into standard through-hole manufacturing processes

Applications

• AC-to-DC power supply circuits
• Battery charging systems
• General-purpose rectification in consumer electronics

Procurement Notes

Verify the specific ordering suffix /51 to confirm tape-and-reel packaging requirements when sourcing this component. Ensure that the requested quantity aligns with the manufacturer's standard reel specifications to avoid handling discrepancies. Cross-reference the date code and lot number against the distributor's certificate of conformity to guarantee authenticity and traceability. Confirm that the storage conditions prior to receipt comply with the specified humidity sensitivity levels to prevent soldering defects during assembly.

Selection Notes

Select this component when a robust 2 A rectifier solution is required for space-constrained designs utilizing axial leads. Evaluate the thermal management requirements based on the DO-201AB package's thermal resistance characteristics. Consider the 400 V reverse voltage rating to ensure adequate margin for the specific AC input line voltage. Verify that the PCB layout accommodates the axial lead spacing and provides sufficient clearance for the encapsulated body dimensions.

Part Context

This part belongs to Vishay's W0x series of general-purpose bridge rectifiers, which are widely utilized in low-to-medium power applications. The E4 designation indicates compliance with specific environmental standards, while the /51 suffix typically denotes tape-and-reel packaging for automated assembly. This series represents a mature product line known for consistent performance and availability across various industrial and consumer sectors.

Replacement Considerations

Direct replacements include the W04G from the same manufacturer or equivalent parts from other vendors such as Littelfuse or Diodes Inc., provided they match the 2 A current rating, 400 V voltage rating, and DO-201AB package footprint. Verify pinout compatibility and thermal characteristics before substitution.