BY448G

Overview

The Diotec Semiconductor BY448G is a standard recovery rectifier diode housed in a DO-201 axial package. It features a repetitive peak reverse voltage (VRRM) of 1650 V and supports a maximum average forward rectified current (IFAV) of 1.5 A at 50°C ambient temperature. The device exhibits a low forward voltage drop of less than 1.3 V at 3 A and handles a peak forward surge current (IFSM) of up to 44 A. With a typical reverse recovery time of approximately 1200 ns, it operates within a junction temperature range of -50°C to +175°C.

Feature Summary

• High voltage blocking capability with a 1650 V repetitive peak reverse voltage rating
• Low forward voltage drop for improved efficiency under load conditions
• Robust surge handling capacity supporting high transient currents
• Extended thermal operation range suitable for demanding environments

Applications

• 50/60 Hz mains rectification circuits
• General power supply designs
• Polarity protection applications
• Free-wheeling diode implementations
• Clamper and damper circuits

Procurement Notes

Verify the specific ordering suffix when procuring. Standard versions are commercial grade. Suffix -Q indicates AEC-Q101 compliance, while -AQ denotes qualification status. Confirm RoHS exemption details regarding category 7a if required by your manufacturing standards. Ensure lead lengths are maintained at least 10 mm from the case during soldering to preserve the rated current capacity.

Selection Notes

Select this component for high-voltage AC-to-DC conversion where moderate switching speeds are acceptable. The 1.5 A continuous current rating suits general industrial and commercial power supplies. Consider the 1200 ns reverse recovery time; it is not ideal for high-frequency switching but performs well in standard line-frequency applications. Verify thermal management requirements given the 15 K/W thermal resistance to ambient.

Part Context

This diode belongs to Diotec's standard recovery rectifier series, designed for robust performance in general-purpose electronics. It complements other components in power conversion stages, providing reliable isolation and current direction. The DO-201 package offers mechanical stability for through-hole mounting, making it a staple in traditional circuit board layouts requiring high voltage withstand capabilities.

Replacement Considerations

Check datasheets for equivalent 1650 V, 1.5 A standard recovery diodes in DO-201 packages. Verify that replacement parts match the 1200 ns reverse recovery time and 1.3 V forward voltage specifications to ensure circuit compatibility.