BYG24DHM3_A/H

Overview

The BYG24DHM3_A/H is a fast avalanche surface-mount rectifier manufactured by Vishay Semiconductors. It features a glass-passivated junction and operates in the SMA (DO-214AC) package. The device supports an average forward current of 1.5 A and a maximum repetitive peak reverse voltage of 200 V. Key electrical parameters include a maximum instantaneous forward voltage of 1.25 V at 1.5 A, a peak forward surge current of 30 A, and a maximum reverse current of 1 μA at 25 °C. The component exhibits a fast reverse recovery time of 140 ns and can withstand a pulse energy of 20 mJ in avalanche mode. It is qualified to AEC-Q101 standards for automotive applications.

Feature Summary

• Fast reverse recovery characteristics with soft recovery behavior
• Capable of handling high-energy avalanche pulses in inductive switching loads
• Glass passivated junction ensures low reverse leakage current
• Low profile package designed for automated placement processes

Applications

• High frequency rectification in switching mode converters
• Freewheeling diode applications in inverters
• Automotive electronic systems requiring AEC-Q101 qualification
• Telecommunication equipment power supplies

Procurement Notes

Verify that the ordering code includes the HM3 suffix to confirm halogen-free compliance and RoHS adherence. Ensure the A/H suffix is present to validate AEC-Q101 automotive qualification status. Confirm the specific voltage rating variant matches the circuit requirements, as the base series covers multiple voltage classes. Cross-reference the datasheet revision date against manufacturing lot codes to ensure technical specifications have not been updated.

Selection Notes

Select this component when avalanche ruggedness is required alongside fast recovery performance. The 200 V rating suits low-voltage DC-DC conversion stages. Verify thermal management capabilities, as the junction-to-case thermal resistance is 25 °C/W. Consider the 140 ns recovery time for high-frequency operation where standard rectifiers would cause excessive switching losses. Ensure the SMA footprint aligns with the PCB layout constraints.

Part Context

This part belongs to the BYG24D family of Fast Avalanche SMD Rectifiers from Vishay General Semiconductor. The series includes variants with different voltage ratings, such as 400 V and 600 V options. The HM3 designation indicates a halogen-free, RoHS-compliant construction suitable for environmentally sensitive assembly processes. The product utilizes a glass passivation technique to enhance junction reliability compared to plastic encapsulated alternatives.

Replacement Considerations

Direct substitutes within the same voltage and current class include the BYG24GHM3_A/H (400 V) or BYG24JHM3_A/H (600 V) if higher voltage margins are acceptable. Non-avalanche equivalents like the MBR20100CT lack the specific avalanche energy rating. Verify pinout compatibility and thermal resistance values before substituting with components from other manufacturers.