BYM12-300HE3_B/I

Overview

The BYM12-300HE3_B/I is a standard rectifier diode manufactured by Vishay General Semiconductor - Diodes Division. It features a maximum repetitive peak reverse voltage of 300 V and an average forward rectified current of 1 A. The device utilizes the DO-213AB (MELF) surface-mount package. Key electrical characteristics include a maximum forward voltage of 1.25 V at 1 A and a reverse leakage current of 5 µA at 300 V. The junction temperature range extends from -55°C to 175°C, ensuring reliable operation in demanding thermal environments.

Feature Summary

• Utilizes high-reliability MELF (Metal Electrode Leadless Face) packaging for robust surface-mount integration
• Engineered with fast recovery characteristics suitable for high-frequency switching applications
• Designed for efficient heat dissipation through direct board contact via the metal electrode case

Applications

• High-frequency rectification in DC-DC converters
• Free-wheeling diodes in inductive load circuits
• General-purpose rectification in compact power supply designs

Procurement Notes

Verify the specific suffix B/I against the official Vishay datasheet to confirm exact manufacturing lot specifications and compliance standards. Ensure that the MELF package dimensions match the target PCB footprint precisely. Confirm that the component meets all required environmental and safety certifications for the intended end-use application before finalizing procurement orders.

Selection Notes

Select this component when a compact, hermetically sealed diode is required for high-reliability applications. The MELF package offers superior mechanical strength compared to standard plastic packages. Consider the 300V rating and 1A current capacity to ensure adequate headroom for the specific circuit requirements. Evaluate thermal management needs based on the package's heat dissipation capabilities.

Part Context

This part belongs to Vishay's general-purpose rectifier diode lineup, specifically designed for surface-mount technology. The BYM series leverages advanced silicon planar technology to provide stable performance. The inclusion of the MELF package variant indicates a focus on durability and resistance to harsh environmental conditions, distinguishing it from standard axial or plastic SMD alternatives within the same voltage and current class.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with alternative MELF-style rectifiers only if they match the 300V, 1A, and pinout specifications exactly.