BYG21MHE3_A/I

Overview

The BYG21MHE3_A/I is a fast avalanche rectifier diode manufactured by Vishay General Semiconductor - Diodes Division. It features a single silicon junction with a maximum repetitive peak reverse voltage of 1000 V and an average forward current rating of 1.5 A. The device utilizes a glass-passivated junction for reliability and is housed in a surface-mount DO-214AC (SMA) package. Key electrical characteristics include a maximum non-repetitive peak forward surge current of 30 A, a maximum reverse recovery time of 0.12 µs, and a maximum forward voltage of 1.5 V. It operates within a junction temperature range of -55 °C to +150 °C.

Feature Summary

• Fast reverse recovery time with soft recovery characteristic
• Glass passivated junction for enhanced reliability
• Low reverse current leakage
• AEC-Q101 qualified for automotive applications

Applications

• High frequency DC/DC converters
• Switching power supplies
• Freewheeling diodes
• OR-ing diode circuits
• Reverse battery protection

Procurement Notes

Verify the specific suffix 'HE3_A/I' against the manufacturer's official datasheet to confirm compliance with RoHS directives and halogen-free status. Ensure the ordering part number matches the exact package style and qualification level required for your design. Cross-reference the component marking on the physical device with the datasheet documentation to prevent counterfeit or mislabeled parts during assembly.

Selection Notes

Select this component for designs requiring high voltage blocking capability combined with fast switching speeds in a compact surface-mount form factor. The AEC-Q101 qualification makes it suitable for automotive electronics where reliability under thermal stress is critical. Consider the 1.5 A current rating and 1000 V breakdown voltage when sizing for power conversion stages that demand low reverse recovery charge.

Part Context

This component belongs to the BYG series of fast avalanche rectifiers from Vishay. These devices are engineered for high-efficiency power applications, offering a balance of high voltage handling and rapid switching performance. The series is designed to meet the stringent requirements of modern electronic systems, including automotive standards, providing robust protection against voltage transients.

Replacement Considerations

Check for direct substitutes such as BYG21K or other BYG series variants with matching voltage and current ratings. Verify package compatibility and electrical parameters before substitution.