BY251GPHE3/54

Overview

The BY251GPHE3/54 is a standard recovery rectifier diode from Vishay General Semiconductor, part of the SUPERECTIFIER series. It features a glass-passivated junction and is housed in a DO-201AD axial package for through-hole mounting. The device supports a maximum repetitive peak reverse voltage of 50 V and an average forward rectified current of 3 A. Key electrical parameters include a forward voltage of 1.1 V at 3 A, a reverse leakage current of 5 µA at 50 V, and a reverse recovery time of 3 µs. It operates within a junction temperature range of -65°C to 175°C.

Feature Summary

• SUPERECTIFIER structure provides high reliability under demanding conditions
• Cavity-free glass-passivated junction enhances durability
• High forward surge capability ensures robust performance during transient events

Applications

• General-purpose rectification in power supplies
• Freewheeling diodes in inductive load circuits
• DC power conversion systems

Procurement Notes

Verify component authenticity by checking manufacturer markings against official datasheets. Confirm RoHS compliance status as required by project specifications. Ensure the DO-201AD package dimensions match PCB footprint requirements. Validate that the specified voltage and current ratings meet circuit design constraints before integration.

Selection Notes

Select this component when a standard recovery time is sufficient for the application frequency. The 3 A current rating suits moderate power levels. Consider the 175°C junction temperature limit for thermal management. Compare with faster recovery alternatives if switching losses are critical. Ensure the axial leaded package fits the assembly process.

Part Context

This diode belongs to the BY25xGP family, which includes variants with different reverse voltage ratings such as 50 V, 100 V, 200 V, 400 V, and 800 V. All members share similar construction and current handling capabilities. The GP suffix indicates the SUPERECTIFIER technology, while HE3 denotes environmental compliance. This specific model offers the lowest voltage option in the series.

Replacement Considerations

Direct substitutes include other BY251GP variants from Vishay or equivalent standard recovery diodes from manufacturers like Littelfuse or Diodes Inc. Ensure replacement parts match the 3 A current rating, 50 V reverse voltage, and DO-201AD package. Verify that reverse recovery characteristics are compatible with the circuit design.